Agenda packet, regular meeting — Moreno Valley City Council, December 19, 2023 (part 6 of 12)

In Main Stream number: 1
Stream flow area = 21.800(Ac.)
Runoff from this stream = 61.898(CFS)
Time of concentration = 11.13 min.

Rainfall intensity = 3.032(In/Hr)
Program is now starting with Main Stream No. 2
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 201.000 to Point/Station
202.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________ ____
Initial area flow distance = 915.000(Ft.)
Top (of initial area) elevation = 2910.000(Ft.)
Bottom (of initial area) elevation = 2680.000(Ft.)
Difference in elevation = 230.000(Ft.)
Slope = 0.25137 s(percent)= 25.14
TC = k(0.530)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 10.685 min.

Rainfall intensity = 3.100(In/Hr) for a 100.0 year storm UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.883
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 1.000
RI index for soil(AMC 3) = 95.60
Pervious area fraction = 1.000; Impervious fraction = 0.000 Initial subarea runoff = 22.706(CFS)
Total initial stream area = 8.300(Ac.)
Pervious area fraction = 1.000
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 202.000 to Point/Station
203.000
**** IRREGULAR CHANNEL FLOW TRAVEL TIME ****
__________________________________________________________________ ____
Estimated mean flow rate at midpoint of channel = 36.349(CFS) Depth of flow = 0.412(Ft.), Average velocity = 8.585(Ft/s) ******* Irregular Channel Data ***********
F.1.d
Packet Pg. 1162 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) ----------------------------------------------------------------- Information entered for subchannel number 1 :

Point number 'X' coordinate 'Y' coordinate
1 0.00 1.00
2 25.00 0.00
3 50.00 1.00
Manning's 'N' friction factor = 0.035
----------------------------------------------------------------- Sub-Channel flow = 36.350(CFS)
' ' flow top width = 20.577(Ft.)
' ' velocity= 8.585(Ft/s)
' ' area = 4.234(Sq.Ft)
' ' Froude number = 3.335
Upstream point elevation = 2680.000(Ft.)
Downstream point elevation = 2460.000(Ft.)
Flow length = 653.000(Ft.)
Travel time = 1.27 min.

Time of concentration = 11.95 min.

Depth of flow = 0.412(Ft.)
Average velocity = 8.585(Ft/s)
Total irregular channel flow = 36.349(CFS)
Irregular channel normal depth above invert elev. = 0.412(Ft.) Average velocity of channel(s) = 8.585(Ft/s)
Adding area flow to channel
UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.881
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 1.000
RI index for soil(AMC 3) = 95.60
Pervious area fraction = 1.000; Impervious fraction = 0.000 Rainfall intensity = 2.914(In/Hr) for a 100.0 year storm Subarea runoff = 27.230(CFS) for 10.600(Ac.)
Total runoff = 49.936(CFS) Total area = 18.900(Ac.)
Depth of flow = 0.464(Ft.), Average velocity = 9.294(Ft/s) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 202.000 to Point/Station
203.000
**** CONFLUENCE OF MAIN STREAMS ****
__________________________________________________________________ ____
The following data inside Main Stream is listed:

In Main Stream number: 2
Stream flow area = 18.900(Ac.)
Runoff from this stream = 49.936(CFS)
Time of concentration = 11.95 min.

Rainfall intensity = 2.914(In/Hr)
Summary of stream data:

Stream Flow rate TC Rainfall Intensity
No. (CFS) (min) (In/Hr)
1 61.898 11.13 3.032
2 49.936 11.95 2.914
F.1.d
Packet Pg. 1163 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Largest stream flow has longer or shorter time of concentration Qp = 61.898 + sum of
Qa Tb/Ta

49.936 * 0.931 = 46.478
Qp = 108.376
Total of 2 main streams to confluence:

Flow rates before confluence point:

61.898 49.936
Area of streams before confluence:

21.800 18.900
Results of confluence:

Total flow rate = 108.376(CFS)
Time of concentration = 11.125 min.

Effective stream area after confluence = 40.700(Ac.)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 103.000 to Point/Station
104.000
**** IRREGULAR CHANNEL FLOW TRAVEL TIME ****
__________________________________________________________________ ____
Estimated mean flow rate at midpoint of channel = 158.384(CFS) Depth of flow = 0.910(Ft.), Average velocity = 15.287(Ft/s) ******* Irregular Channel Data ***********
----------------------------------------------------------------- Information entered for subchannel number 1 :

Point number 'X' coordinate 'Y' coordinate
1 0.00 2.00
2 25.00 0.00
3 50.00 2.00
Manning's 'N' friction factor = 0.035
----------------------------------------------------------------- Sub-Channel flow = 158.384(CFS)
' ' flow top width = 22.761(Ft.)
' ' velocity= 15.287(Ft/s)
' ' area = 10.361(Sq.Ft)
' ' Froude number = 3.993
Upstream point elevation = 2460.000(Ft.)
Downstream point elevation = 1680.000(Ft.)
Flow length = 2098.000(Ft.)
Travel time = 2.29 min.

Time of concentration = 13.41 min.

Depth of flow = 0.910(Ft.)
Average velocity = 15.287(Ft/s)
Total irregular channel flow = 158.384(CFS)
Irregular channel normal depth above invert elev. = 0.910(Ft.) Average velocity of channel(s) = 15.287(Ft/s)
Adding area flow to channel
UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.880
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 1.000
F.1.d
Packet Pg. 1164 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) RI index for soil(AMC 3) = 95.60
Pervious area fraction = 1.000; Impervious fraction = 0.000 Rainfall intensity = 2.735(In/Hr) for a 100.0 year storm Subarea runoff = 99.928(CFS) for 41.500(Ac.)
Total runoff = 208.305(CFS) Total area = 82.200(Ac.)
Depth of flow = 1.009(Ft.), Average velocity = 16.370(Ft/s) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 104.000 to Point/Station
105.000
**** NATURAL CHANNEL TIME + SUBAREA FLOW ADDITION ****
__________________________________________________________________ ____
Top of natural channel elevation = 1680.000(Ft.)
End of natural channel elevation = 1584.000(Ft.)
Length of natural channel = 1205.000(Ft.)
Estimated mean flow rate at midpoint of channel = 211.867(CFS) Natural valley channel type used
L.A. County flood control district formula for channel velocity:

Velocity(ft/s) = (7 + 8(q(English Units)^.352)(slope^0.5) Velocity using mean channel flow = 16.85(Ft/s)
Correction to map slope used on extremely rugged channels with drops and waterfalls (Plate D-6.2)
Normal channel slope = 0.0797
Corrected/adjusted channel slope = 0.0797
Travel time = 1.19 min. TC = 14.60 min.

Adding area flow to channel
UNDEVELOPED (fair cover) subarea
Runoff Coefficient = 0.854
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 1.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 3) = 90.40
Pervious area fraction = 1.000; Impervious fraction = 0.000 Rainfall intensity = 2.610(In/Hr) for a 100.0 year storm Subarea runoff = 6.266(CFS) for 2.812(Ac.)
Total runoff = 214.571(CFS) Total area = 85.012(Ac.)
End of computations, total study area = 85.01 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.

Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number = 88.7
F.1.d
Packet Pg. 1165 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2012 Version

8.0 Rational Hydrology Study Date: 11/08/21
File:moval332.out
------------------------------------------------------------------ ------
Gateway Heights
Offsite Drainage
Area C - 100yr Peak Runoff

------------------------------------------------------------------ ------
********* Hydrology Study Control Information ********** English (in-lb) Units used in input data file
------------------------------------------------------------------ ------
Program License Serial Number 6232
------------------------------------------------------------------ ------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District 1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 3 Standard intensity-duration curves data (Plate D-4.1)
For the [ Riverside-Foothill ] area used.
10 year storm 10 minute intensity = 2.140(In/Hr)
10 year storm 60 minute intensity = 0.800(In/Hr)
100 year storm 10 minute intensity = 3.210(In/Hr)
100 year storm 60 minute intensity = 1.200(In/Hr)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.200(In/Hr)
Slope of intensity duration curve = 0.5500
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 301.000 to Point/Station
302.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________ ____
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 2980.000(Ft.)
Bottom (of initial area) elevation = 2680.000(Ft.)
Difference in elevation = 300.000(Ft.)
F.1.d
Packet Pg. 1166 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Slope = 0.30000 s(percent)= 30.00
TC = k(0.530)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 10.687 min.

Rainfall intensity = 3.100(In/Hr) for a 100.0 year storm UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.883
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 1.000
RI index for soil(AMC 3) = 95.60
Pervious area fraction = 1.000; Impervious fraction = 0.000 Initial subarea runoff = 25.439(CFS)
Total initial stream area = 9.300(Ac.)
Pervious area fraction = 1.000
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 302.000 to Point/Station
303.000
**** IRREGULAR CHANNEL FLOW TRAVEL TIME ****
__________________________________________________________________ ____
Estimated mean flow rate at midpoint of channel = 43.224(CFS) Depth of flow = 0.429(Ft.), Average velocity = 9.408(Ft/s) ******* Irregular Channel Data ***********
----------------------------------------------------------------- Information entered for subchannel number 1 :

Point number 'X' coordinate 'Y' coordinate
1 0.00 1.00
2 25.00 0.00
3 50.00 1.00
Manning's 'N' friction factor = 0.035
----------------------------------------------------------------- Sub-Channel flow = 43.224(CFS)
' ' flow top width = 21.435(Ft.)
' ' velocity= 9.408(Ft/s)
' ' area = 4.595(Sq.Ft)
' ' Froude number = 3.581
Upstream point elevation = 2680.000(Ft.)
Downstream point elevation = 2280.000(Ft.)
Flow length = 1044.000(Ft.)
Travel time = 1.85 min.

Time of concentration = 12.54 min.

Depth of flow = 0.429(Ft.)
Average velocity = 9.408(Ft/s)
Total irregular channel flow = 43.224(CFS)
Irregular channel normal depth above invert elev. = 0.429(Ft.) Average velocity of channel(s) = 9.408(Ft/s)
Adding area flow to channel
UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.881
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 1.000
RI index for soil(AMC 3) = 95.60
Pervious area fraction = 1.000; Impervious fraction = 0.000 F.1.d
Packet Pg. 1167 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Rainfall intensity = 2.839(In/Hr) for a 100.0 year storm Subarea runoff = 35.515(CFS) for 14.200(Ac.)
Total runoff = 60.954(CFS) Total area = 23.500(Ac.)
Depth of flow = 0.488(Ft.), Average velocity = 10.252(Ft/s) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 303.000 to Point/Station
304.000
**** IRREGULAR CHANNEL FLOW TRAVEL TIME ****
__________________________________________________________________ ____
Estimated mean flow rate at midpoint of channel = 75.784(CFS) Depth of flow = 0.511(Ft.), Average velocity = 11.595(Ft/s) ******* Irregular Channel Data ***********
----------------------------------------------------------------- Information entered for subchannel number 1 :

Point number 'X' coordinate 'Y' coordinate
1 0.00 1.00
2 25.00 0.00
3 50.00 1.00
Manning's 'N' friction factor = 0.035
----------------------------------------------------------------- Sub-Channel flow = 75.784(CFS)
' ' flow top width = 25.566(Ft.)
' ' velocity= 11.595(Ft/s)
' ' area = 6.536(Sq.Ft)
' ' Froude number = 4.041
Upstream point elevation = 2280.000(Ft.)
Downstream point elevation = 1680.000(Ft.)
Flow length = 1304.000(Ft.)
Travel time = 1.87 min.

Time of concentration = 14.41 min.

Depth of flow = 0.511(Ft.)
Average velocity = 11.595(Ft/s)
Total irregular channel flow = 75.784(CFS)
Irregular channel normal depth above invert elev. = 0.511(Ft.) Average velocity of channel(s) = 11.595(Ft/s)
Adding area flow to channel
UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.879
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 1.000
RI index for soil(AMC 3) = 95.60
Pervious area fraction = 1.000; Impervious fraction = 0.000 Rainfall intensity = 2.630(In/Hr) for a 100.0 year storm Subarea runoff = 29.602(CFS) for 12.800(Ac.)
Total runoff = 90.556(CFS) Total area = 36.300(Ac.)
Depth of flow = 0.547(Ft.), Average velocity = 12.123(Ft/s) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 304.000 to Point/Station
305.000
**** NATURAL CHANNEL TIME + SUBAREA FLOW ADDITION ****
F.1.d
Packet Pg. 1168 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) __________________________________________________________________ ____
Top of natural channel elevation = 1680.000(Ft.)
End of natural channel elevation = 1620.000(Ft.)
Length of natural channel = 518.000(Ft.)
Estimated mean flow rate at midpoint of channel = 92.427(CFS) Natural valley channel type used
L.A. County flood control district formula for channel velocity:

Velocity(ft/s) = (7 + 8(q(English Units)^.352)(slope^0.5) Velocity using mean channel flow = 15.78(Ft/s)
Correction to map slope used on extremely rugged channels with drops and waterfalls (Plate D-6.2)
Normal channel slope = 0.1158
Corrected/adjusted channel slope = 0.1158
Travel time = 0.55 min. TC = 14.96 min.

Adding area flow to channel
UNDEVELOPED (fair cover) subarea
Runoff Coefficient = 0.853
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 1.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 3) = 90.40
Pervious area fraction = 1.000; Impervious fraction = 0.000 Rainfall intensity = 2.576(In/Hr) for a 100.0 year storm Subarea runoff = 3.297(CFS) for 1.500(Ac.)
Total runoff = 93.853(CFS) Total area = 37.800(Ac.)
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 305.000 to Point/Station
306.000
**** NATURAL CHANNEL TIME + SUBAREA FLOW ADDITION ****
__________________________________________________________________ ____
Top of natural channel elevation = 1620.000(Ft.)
End of natural channel elevation = 1600.000(Ft.)
Length of natural channel = 313.000(Ft.)
Estimated mean flow rate at midpoint of channel = 95.467(CFS) Natural valley channel type used
L.A. County flood control district formula for channel velocity:

Velocity(ft/s) = (7 + 8(q(English Units)^.352)(slope^0.5) Velocity using mean channel flow = 11.83(Ft/s)
Correction to map slope used on extremely rugged channels with drops and waterfalls (Plate D-6.2)
Normal channel slope = 0.0639
Corrected/adjusted channel slope = 0.0639
Travel time = 0.44 min. TC = 15.40 min.

Adding area flow to channel
UNDEVELOPED (fair cover) subarea
Runoff Coefficient = 0.852
F.1.d
Packet Pg. 1169 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 1.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 3) = 90.40
Pervious area fraction = 1.000; Impervious fraction = 0.000 Rainfall intensity = 2.535(In/Hr) for a 100.0 year storm Subarea runoff = 2.810(CFS) for 1.300(Ac.)
Total runoff = 96.662(CFS) Total area = 39.100(Ac.)
End of computations, total study area = 39.10 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.

Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number = 88.3
F.1.d
Packet Pg. 1170 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2012 Version

8.0 Rational Hydrology Study Date: 11/08/21
File:moval333.out
------------------------------------------------------------------ ------
Gateway Heights
Offsite Drainage
Area D - 100yr Peak Runoff

------------------------------------------------------------------ ------
********* Hydrology Study Control Information ********** English (in-lb) Units used in input data file
------------------------------------------------------------------ ------
Program License Serial Number 6232
------------------------------------------------------------------ ------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District 1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 3 Standard intensity-duration curves data (Plate D-4.1)
For the [ Riverside-Foothill ] area used.
10 year storm 10 minute intensity = 2.140(In/Hr)
10 year storm 60 minute intensity = 0.800(In/Hr)
100 year storm 10 minute intensity = 3.210(In/Hr)
100 year storm 60 minute intensity = 1.200(In/Hr)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.200(In/Hr)
Slope of intensity duration curve = 0.5500
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 401.000 to Point/Station
402.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________ ____
Initial area flow distance = 760.000(Ft.)
Top (of initial area) elevation = 2340.000(Ft.)
Bottom (of initial area) elevation = 1930.000(Ft.)
Difference in elevation = 410.000(Ft.)
F.1.d
Packet Pg. 1171 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Slope = 0.53947 s(percent)= 53.95
TC = k(0.530)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 8.515 min.

Rainfall intensity = 3.512(In/Hr) for a 100.0 year storm UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.885
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 1.000
RI index for soil(AMC 3) = 95.60
Pervious area fraction = 1.000; Impervious fraction = 0.000 Initial subarea runoff = 6.027(CFS)
Total initial stream area = 1.940(Ac.)
Pervious area fraction = 1.000
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 402.000 to Point/Station
403.000
**** IRREGULAR CHANNEL FLOW TRAVEL TIME ****
__________________________________________________________________ ____
Estimated mean flow rate at midpoint of channel = 16.393(CFS) Depth of flow = 0.297(Ft.), Average velocity = 7.453(Ft/s) ******* Irregular Channel Data ***********
----------------------------------------------------------------- Information entered for subchannel number 1 :

Point number 'X' coordinate 'Y' coordinate
1 0.00 1.00
2 25.00 0.00
3 50.00 1.00
Manning's 'N' friction factor = 0.035
----------------------------------------------------------------- Sub-Channel flow = 16.393(CFS)
' ' flow top width = 14.830(Ft.)
' ' velocity= 7.453(Ft/s)
' ' area = 2.199(Sq.Ft)
' ' Froude number = 3.411
Upstream point elevation = 1930.000(Ft.)
Downstream point elevation = 1660.000(Ft.)
Flow length = 687.000(Ft.)
Travel time = 1.54 min.

Time of concentration = 10.05 min.

Depth of flow = 0.297(Ft.)
Average velocity = 7.453(Ft/s)
Total irregular channel flow = 16.393(CFS)
Irregular channel normal depth above invert elev. = 0.297(Ft.) Average velocity of channel(s) = 7.453(Ft/s)
Adding area flow to channel
UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.883
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 1.000
RI index for soil(AMC 3) = 95.60
Pervious area fraction = 1.000; Impervious fraction = 0.000 F.1.d
Packet Pg. 1172 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Rainfall intensity = 3.206(In/Hr) for a 100.0 year storm Subarea runoff = 20.666(CFS) for 7.300(Ac.)
Total runoff = 26.693(CFS) Total area = 9.240(Ac.)
Depth of flow = 0.356(Ft.), Average velocity = 8.420(Ft/s) ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 403.000 to Point/Station
305.000
**** NATURAL CHANNEL TIME + SUBAREA FLOW ADDITION ****
__________________________________________________________________ ____
Top of natural channel elevation = 1660.000(Ft.)
End of natural channel elevation = 1620.000(Ft.)
Length of natural channel = 402.000(Ft.)
Estimated mean flow rate at midpoint of channel = 29.582(CFS) Natural valley channel type used
L.A. County flood control district formula for channel velocity:

Velocity(ft/s) = (7 + 8(q(English Units)^.352)(slope^0.5) Velocity using mean channel flow = 10.52(Ft/s)
Correction to map slope used on extremely rugged channels with drops and waterfalls (Plate D-6.2)
Normal channel slope = 0.0995
Corrected/adjusted channel slope = 0.0995
Travel time = 0.64 min. TC = 10.69 min.

Adding area flow to channel
UNDEVELOPED (fair cover) subarea
Runoff Coefficient = 0.861
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 1.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 3) = 90.40
Pervious area fraction = 1.000; Impervious fraction = 0.000 Rainfall intensity = 3.099(In/Hr) for a 100.0 year storm Subarea runoff = 5.335(CFS) for 2.000(Ac.)
Total runoff = 32.028(CFS) Total area = 11.240(Ac.)
End of computations, total study area = 11.24 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.

Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number = 87.2
F.1.d
Packet Pg. 1173 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2012 Version

8.0 Rational Hydrology Study Date: 11/08/21
File:moval334.out
------------------------------------------------------------------ ------
Gateway Heights
Offsite Drainage
Area E - 100yr Runoff
------------------------------------------------------------------ ------
********* Hydrology Study Control Information ********** English (in-lb) Units used in input data file
------------------------------------------------------------------ ------
Program License Serial Number 6232
------------------------------------------------------------------ ------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District 1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 3 Standard intensity-duration curves data (Plate D-4.1)
For the [ Riverside-Foothill ] area used.
10 year storm 10 minute intensity = 2.140(In/Hr)
10 year storm 60 minute intensity = 0.800(In/Hr)
100 year storm 10 minute intensity = 3.210(In/Hr)
100 year storm 60 minute intensity = 1.200(In/Hr)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.200(In/Hr)
Slope of intensity duration curve = 0.5500
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 501.000 to Point/Station
502.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________ ____
Initial area flow distance = 882.000(Ft.)
Top (of initial area) elevation = 2160.000(Ft.)
Bottom (of initial area) elevation = 1680.000(Ft.)
Difference in elevation = 480.000(Ft.)
F.1.d
Packet Pg. 1174 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Slope = 0.54422 s(percent)= 54.42
TC = k(0.530)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 9.022 min.

Rainfall intensity = 3.402(In/Hr) for a 100.0 year storm UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.884
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 1.000
RI index for soil(AMC 3) = 95.60
Pervious area fraction = 1.000; Impervious fraction = 0.000 Initial subarea runoff = 7.820(CFS)
Total initial stream area = 2.600(Ac.)
Pervious area fraction = 1.000
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 502.000 to Point/Station
503.000
**** NATURAL CHANNEL TIME + SUBAREA FLOW ADDITION ****
__________________________________________________________________ ____
Top of natural channel elevation = 1680.000(Ft.)
End of natural channel elevation = 1631.000(Ft.)
Length of natural channel = 377.000(Ft.)
Estimated mean flow rate at midpoint of channel = 11.730(CFS) Natural valley channel type used
L.A. County flood control district formula for channel velocity:

Velocity(ft/s) = (7 + 8(q(English Units)^.352)(slope^0.5) Velocity using mean channel flow = 9.38(Ft/s)
Correction to map slope used on extremely rugged channels with drops and waterfalls (Plate D-6.2)
Normal channel slope = 0.1300
Corrected/adjusted channel slope = 0.1300
Travel time = 0.67 min. TC = 9.69 min.

Adding area flow to channel
UNDEVELOPED (fair cover) subarea
Runoff Coefficient = 0.863
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 1.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 3) = 90.40
Pervious area fraction = 1.000; Impervious fraction = 0.000 Rainfall intensity = 3.271(In/Hr) for a 100.0 year storm Subarea runoff = 7.336(CFS) for 2.600(Ac.)
Total runoff = 15.156(CFS) Total area = 5.200(Ac.)
End of computations, total study area = 5.20 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.

Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number = 84.0
F.1.d
Packet Pg. 1175 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2012 Version

8.0 Rational Hydrology Study Date: 03/29/22
File:moval33rev.out
------------------------------------------------------------------ ------
Gateway Heights
Existing Conditions
Area F - 100 yr

------------------------------------------------------------------ ------
********* Hydrology Study Control Information ********** English (in-lb) Units used in input data file
------------------------------------------------------------------ ------
Program License Serial Number 6232
------------------------------------------------------------------ ------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District 1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 3 Standard intensity-duration curves data (Plate D-4.1)
For the [ Riverside-Foothill ] area used.
10 year storm 10 minute intensity = 2.140(In/Hr)
10 year storm 60 minute intensity = 0.800(In/Hr)
100 year storm 10 minute intensity = 3.210(In/Hr)
100 year storm 60 minute intensity = 1.200(In/Hr)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.200(In/Hr)
Slope of intensity duration curve = 0.5500
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 601.000 to Point/Station
602.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________ ____
Initial area flow distance = 778.000(Ft.)
Top (of initial area) elevation = 1725.000(Ft.)
Bottom (of initial area) elevation = 1617.000(Ft.)
Difference in elevation = 108.000(Ft.)
F.1.d
Packet Pg. 1176 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Slope = 0.13882 s(percent)= 13.88
TC = k(0.530)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 11.277 min.

Rainfall intensity = 3.009(In/Hr) for a 100.0 year storm UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.877
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 1.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 3) = 94.40
Pervious area fraction = 1.000; Impervious fraction = 0.000 Initial subarea runoff = 5.806(CFS)
Total initial stream area = 2.200(Ac.)
Pervious area fraction = 1.000
End of computations, total study area = 2.20 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.

Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number = 86.0
F.1.d
Packet Pg. 1177 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2012 Version

8.0 Rational Hydrology Study Date: 03/29/22
File:moval33rev.out
------------------------------------------------------------------ ------
Gateway Heights
Existing Conditions
Area G - 100 yr

------------------------------------------------------------------ ------
********* Hydrology Study Control Information ********** English (in-lb) Units used in input data file
------------------------------------------------------------------ ------
Program License Serial Number 6232
------------------------------------------------------------------ ------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District 1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 3 Standard intensity-duration curves data (Plate D-4.1)
For the [ Riverside-Foothill ] area used.
10 year storm 10 minute intensity = 2.140(In/Hr)
10 year storm 60 minute intensity = 0.800(In/Hr)
100 year storm 10 minute intensity = 3.210(In/Hr)
100 year storm 60 minute intensity = 1.200(In/Hr)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.200(In/Hr)
Slope of intensity duration curve = 0.5500
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 701.000 to Point/Station
702.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________ ____
Initial area flow distance = 388.000(Ft.)
Top (of initial area) elevation = 1646.000(Ft.)
Bottom (of initial area) elevation = 1600.000(Ft.)
Difference in elevation = 46.000(Ft.)
F.1.d
Packet Pg. 1178 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Slope = 0.11856 s(percent)= 11.86
TC = k(0.530)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 8.811 min.

Rainfall intensity = 3.447(In/Hr) for a 100.0 year storm UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.880
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 1.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 3) = 94.40
Pervious area fraction = 1.000; Impervious fraction = 0.000 Initial subarea runoff = 1.819(CFS)
Total initial stream area = 0.600(Ac.)
Pervious area fraction = 1.000
End of computations, total study area = 0.60 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.

Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number = 86.0
F.1.d
Packet Pg. 1179 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2012 Version

8.0 Rational Hydrology Study Date: 03/29/22
File:moval33rev.out
------------------------------------------------------------------ ------
Gateway Heights
Existing Conditions
Area H - 100 yr

------------------------------------------------------------------ ------
********* Hydrology Study Control Information ********** English (in-lb) Units used in input data file
------------------------------------------------------------------ ------
Program License Serial Number 6232
------------------------------------------------------------------ ------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District 1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 3 Standard intensity-duration curves data (Plate D-4.1)
For the [ Riverside-Foothill ] area used.
10 year storm 10 minute intensity = 2.140(In/Hr)
10 year storm 60 minute intensity = 0.800(In/Hr)
100 year storm 10 minute intensity = 3.210(In/Hr)
100 year storm 60 minute intensity = 1.200(In/Hr)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.200(In/Hr)
Slope of intensity duration curve = 0.5500
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 801.000 to Point/Station
802.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________ ____
Initial area flow distance = 589.000(Ft.)
Top (of initial area) elevation = 1678.000(Ft.)
Bottom (of initial area) elevation = 1587.000(Ft.)
Difference in elevation = 91.000(Ft.)
F.1.d
Packet Pg. 1180 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Slope = 0.15450 s(percent)= 15.45
TC = k(0.530)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 9.875 min.

Rainfall intensity = 3.237(In/Hr) for a 100.0 year storm UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.879
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 1.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 3) = 94.40
Pervious area fraction = 1.000; Impervious fraction = 0.000 Initial subarea runoff = 5.688(CFS)
Total initial stream area = 2.000(Ac.)
Pervious area fraction = 1.000
End of computations, total study area = 2.00 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.

Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number = 86.0
F.1.d
Packet Pg. 1181 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2012 Version

8.0 Rational Hydrology Study Date: 03/29/22
File:moval33rev.out
------------------------------------------------------------------ ------
Gateway Heights
Existing Conditions
Area I - 100 yr

------------------------------------------------------------------ ------
********* Hydrology Study Control Information ********** English (in-lb) Units used in input data file
------------------------------------------------------------------ ------
Program License Serial Number 6232
------------------------------------------------------------------ ------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District 1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 3 Standard intensity-duration curves data (Plate D-4.1)
For the [ Riverside-Foothill ] area used.
10 year storm 10 minute intensity = 2.140(In/Hr)
10 year storm 60 minute intensity = 0.800(In/Hr)
100 year storm 10 minute intensity = 3.210(In/Hr)
100 year storm 60 minute intensity = 1.200(In/Hr)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.200(In/Hr)
Slope of intensity duration curve = 0.5500
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++
Process from Point/Station 901.000 to Point/Station
902.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________ ____
Initial area flow distance = 821.000(Ft.)
Top (of initial area) elevation = 1664.000(Ft.)
Bottom (of initial area) elevation = 1586.000(Ft.)
Difference in elevation = 78.000(Ft.)
F.1.d
Packet Pg. 1182 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Slope = 0.09501 s(percent)= 9.50
TC = k(0.530)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 12.430 min.

Rainfall intensity = 2.852(In/Hr) for a 100.0 year storm UNDEVELOPED (poor cover) subarea
Runoff Coefficient = 0.876
Decimal fraction soil group A = 0.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 1.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 3) = 94.40
Pervious area fraction = 1.000; Impervious fraction = 0.000 Initial subarea runoff = 7.993(CFS)
Total initial stream area = 3.200(Ac.)
Pervious area fraction = 1.000
End of computations, total study area = 3.20 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.

Area averaged pervious area fraction(Ap) = 1.000
Area averaged RI index number = 86.0
F.1.d
Packet Pg. 1183 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 20 Existing Condition SCS Hydrograph Runoff
F.1.d
Packet Pg. 1184 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea12.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 1 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1185 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 0.47 2.58
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.19 6.58
STORM EVENT (YEAR) = 2.00
Area Averaged 2-Year Rainfall = 0.466(In)
Area Averaged 100-Year Rainfall = 1.190(In)
Point rain (area averaged) = 0.466(In)
Areal adjustment factor = 99.99 %
Adjusted average point rain = 0.466(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0002 0.03 Q | | |
|
0+10 0.0011 0.12 Q | | |
|
0+15 0.0025 0.21 Q | | |
|
0+20 0.0045 0.29 |Q | | |
|
0+25 0.0074 0.41 |QV | | |
|
0+30 0.0115 0.60 | QV | | |
|
0+35 0.0173 0.84 | Q V | | |
|
F.1.d
Packet Pg. 1187 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 0+40 0.0254 1.18 | Q V | | |
|
0+45 0.0396 2.07 | Q | V | |
|
0+50 0.0725 4.78 | | Q| V |
|
0+55 0.1099 5.43 | | |Q | V
|
1+ 0 0.1215 1.67 | Q | | | V
|
1+ 5 0.1241 0.39 |Q | | |
V|
1+10 0.1248 0.09 Q | | |
V|
1+15 0.1248 0.01 Q | | |
V|
1+20 0.1248 0.00 Q | | |
V|
----------------------------------------------------------------------- F.1.d
Packet Pg. 1188 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea15.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 1 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1189 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 0.47 2.58
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.19 6.58
STORM EVENT (YEAR) = 5.00
Area Averaged 2-Year Rainfall = 0.466(In)
Area Averaged 100-Year Rainfall = 1.190(In)
Point rain (area averaged) = 0.636(In)
Areal adjustment factor = 99.99 %
Adjusted average point rain = 0.636(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0007 0.10 Q | | |
|
0+10 0.0033 0.38 VQ | | |
|
0+15 0.0078 0.65 |VQ | | |
|
0+20 0.0132 0.80 | VQ | | |
|
0+25 0.0199 0.96 | Q | | |
|
0+30 0.0282 1.22 | QV | | |
|
0+35 0.0389 1.55 | QV | | |
|
F.1.d
Packet Pg. 1191 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 0+40 0.0528 2.02 | Q V | |
|
0+45 0.0750 3.22 | | Q V | |
|
0+50 0.1226 6.92 | | | V Q |
|
0+55 0.1764 7.81 | | | |Q V
|
1+ 0 0.1948 2.67 | Q | | V
|
1+ 5 0.2001 0.77 | Q | | |
V|
1+10 0.2013 0.18 Q | | |
V|
1+15 0.2014 0.02 Q | | |
V|
1+20 0.2015 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1192 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 02/19/21 File: moval33prea110.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 1 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1193 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 0.47 2.58
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.19 6.58
STORM EVENT (YEAR) = 10.00
Area Averaged 2-Year Rainfall = 0.466(In)
Area Averaged 100-Year Rainfall = 1.190(In)
Point rain (area averaged) = 0.764(In)
Areal adjustment factor = 99.99 %
Adjusted average point rain = 0.764(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0013 0.19 Q | | |
|
0+10 0.0058 0.65 V Q | | |
|
0+15 0.0126 1.00 |V Q | | |
|
0+20 0.0208 1.18 | VQ | | |
|
0+25 0.0303 1.38 | VQ | | |
|
0+30 0.0419 1.68 | Q | | |
|
0+35 0.0562 2.09 | Q | | |
|
F.1.d
Packet Pg. 1195 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 0+40 0.0745 2.65 | QV | |
|
0+45 0.1027 4.09 | | VQ | |
|
0+50 0.1614 8.54 | | | V | Q
|
0+55 0.2276 9.61 | | | | V Q
|
1+ 0 0.2512 3.43 | | Q | | V
|
1+ 5 0.2586 1.07 | Q | | |
V|
1+10 0.2603 0.24 Q | | |
V|
1+15 0.2605 0.03 Q | | |
V|
1+20 0.2606 0.01 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1196 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea1100.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
Area A
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 1 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1197 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 0.47 2.58
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.19 6.58
STORM EVENT (YEAR) = 100.00
Area Averaged 2-Year Rainfall = 0.466(In)
Area Averaged 100-Year Rainfall = 1.190(In)
Point rain (area averaged) = 1.190(In)
Areal adjustment factor = 99.99 %
Adjusted average point rain = 1.190(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-3 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 93.4 0.086 0.000 0.086 1.000

0.086
Sum (F) =

20.0 ----------------------------------------------------------------------- 0+ 5 0.0048 0.70 VQ | | |
|
0+10 0.0192 2.09 |V Q | | |
|
0+15 0.0383 2.76 | V Q | | |
|
0+20 0.0594 3.07 | V Q | | |
|
0+25 0.0828 3.40 | Q | | |
|
0+30 0.1095 3.87 | QV | | |
|
0+35 0.1404 4.50 | Q |V | |
|
F.1.d
Packet Pg. 1199 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 0+40 0.1774 5.37 | Q V | |
|
0+45 0.2299 7.62 | | Q V | |
|
0+50 0.3300 14.54 | | | V Q|
|
0+55 0.4417 16.21 | | | | Q V
|
1+ 0 0.4871 6.59 | | Q | | V
|
1+ 5 0.5043 2.51 | Q | | |
V|
1+10 0.5081 0.55 |Q | | |
V|
1+15 0.5087 0.09 Q | | |
V|
1+20 0.5088 0.02 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1200 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea32.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 3 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1201 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 0.80 4.42
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.89 10.45
STORM EVENT (YEAR) = 2.00
Area Averaged 2-Year Rainfall = 0.799(In)
Area Averaged 100-Year Rainfall = 1.890(In)
Point rain (area averaged) = 0.799(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 0.799(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0002 0.02 Q | | |
|
0+10 0.0006 0.06 Q | | |
|
0+15 0.0010 0.06 Q | | |
|
0+20 0.0015 0.07 Q | | |
|
0+25 0.0020 0.08 Q | | |
|
0+30 0.0026 0.08 Q | | |
|
0+35 0.0032 0.09 Q | | |
|
0+40 0.0038 0.09 QV | | |
|
0+45 0.0045 0.09 QV | | |
|
0+50 0.0051 0.09 QV | | |
|
0+55 0.0057 0.08 QV | | |
|
1+ 0 0.0063 0.09 QV | | |
|
1+ 5 0.0070 0.10 Q V | | |
|
1+10 0.0078 0.11 Q V | | |
|
1+15 0.0086 0.12 Q V | | |
|
1+20 0.0093 0.11 Q V | | |
|
1+25 0.0105 0.17 Q V | | |
|
1+30 0.0124 0.28 |Q V | | |
|
1+35 0.0143 0.27 |Q V | | |
|
1+40 0.0160 0.25 Q V | | |
|
1+45 0.0189 0.42 |Q V | | |
|
1+50 0.0229 0.58 | Q V | | |
|
1+55 0.0265 0.52 | Q V | | |
|
2+ 0 0.0298 0.48 |Q V | | |
|
2+ 5 0.0333 0.51 | Q V| | |
|
2+10 0.0383 0.74 | Q |V | |
|
2+15 0.0466 1.20 | Q | V | |
F.1.d
Packet Pg. 1204 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
2+20 0.0551 1.23 | Q | V | |
|
2+25 0.0649 1.44 | Q | V| |
|
2+30 0.0814 2.40 | Q| | V |
|
2+35 0.1012 2.88 | |Q | V|
|
2+40 0.1205 2.79 | |Q | | V
|
2+45 0.1312 1.57 | Q | | | V
|
2+50 0.1340 0.40 |Q | | |
V|
2+55 0.1351 0.16 Q | | |
V|
3+ 0 0.1357 0.09 Q | | |
V|
3+ 5 0.1359 0.03 Q | | |
V|
3+10 0.1359 0.01 Q | | |
V|
3+15 0.1359 0.00 Q | | |
V|
3+20 0.1359 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1205 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea35.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 3 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1206 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 0.80 4.42
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.89 10.45
STORM EVENT (YEAR) = 5.00
Area Averaged 2-Year Rainfall = 0.799(In)
Area Averaged 100-Year Rainfall = 1.890(In)
Point rain (area averaged) = 1.055(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 1.055(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0002 0.03 Q | | |
|
0+10 0.0008 0.08 Q | | |
|
0+15 0.0013 0.08 Q | | |
|
0+20 0.0019 0.09 Q | | |
|
0+25 0.0026 0.10 Q | | |
|
0+30 0.0035 0.12 Q | | |
|
0+35 0.0044 0.14 Q | | |
|
0+40 0.0053 0.13 Q | | |
|
0+45 0.0064 0.16 QV | | |
|
0+50 0.0074 0.14 QV | | |
|
0+55 0.0082 0.12 QV | | |
|
1+ 0 0.0091 0.13 QV | | |
|
1+ 5 0.0108 0.25 QV | | |
|
1+10 0.0136 0.41 |QV | | |
|
1+15 0.0166 0.44 |QV | | |
|
1+20 0.0194 0.40 |Q V | | |
|
1+25 0.0226 0.46 |Q V | | |
|
1+30 0.0274 0.70 | Q V | | |
|
1+35 0.0323 0.71 | Q V | | |
|
1+40 0.0369 0.68 | Q V | | |
|
1+45 0.0432 0.91 | Q V | | |
|
1+50 0.0509 1.11 | Q V | | |
|
1+55 0.0581 1.04 | Q V | |
|
2+ 0 0.0649 0.98 | Q |V | |
|
2+ 5 0.0719 1.03 | Q | V | |
|
2+10 0.0811 1.32 | Q | V | |
|
2+15 0.0944 1.93 | Q | V | |
F.1.d
Packet Pg. 1209 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
2+20 0.1080 1.98 | Q | V | |
|
2+25 0.1235 2.25 | Q | |V |
|
2+30 0.1477 3.51 | | Q | V |
|
2+35 0.1763 4.15 | | Q | V
|
2+40 0.2041 4.04 | | Q | | V
|
2+45 0.2203 2.36 | Q| | | V
|
2+50 0.2249 0.67 | Q | | |
V|
2+55 0.2268 0.27 |Q | | |
V|
3+ 0 0.2278 0.15 Q | | |
V|
3+ 5 0.2281 0.05 Q | | |
V|
3+10 0.2282 0.01 Q | | |
V|
3+15 0.2282 0.00 Q | | |
V|
3+20 0.2282 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1210 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea310
U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version 8.2 Study date 02/19/21 File: moval33prea310.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------------------------------------------------------------------------ Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
--------------------------------------------------------------------- English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
--------------------------------------------------------------------- Gateway Heights
Existing Condition
Unit Hydrograph Runoff
-------------------------------------------------------------------- Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00(Ft.) Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 3 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 0.80 4.42
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.89 10.45
STORM EVENT (YEAR) = 10.00
Area Averaged 2-Year Rainfall = 0.799(In)
Area Averaged 100-Year Rainfall = 1.890(In)

Page 1 ends

F.1.d
Packet Pg. 1211 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea310
Point rain (area averaged) = 1.248(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 1.248(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.) (In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000 0.198
Sum (F) = 0.198
Area averaged mean soil loss (F) (In/Hr) = 0.198
Minimum soil loss rate ((In/Hr)) = 0.099
(for 24 hour storm duration)
Soil low loss rate (decimal) = 0.900
--------------------------------------------------------------------- U n i t H y d r o g r a p h
FOOTHILL S-Curve
-------------------------------------------------------------------- Unit Hydrograph Data
--------------------------------------------------------------------- Unit time period Time % of lag Distribution Unit Hydrograph (hrs) Graph % (CFS)
--------------------------------------------------------------------- 1 0.083 157.948 32.675 1.821
2 0.167 315.896 53.715 2.994
3 0.250 473.844 10.920 0.609
4 0.333 631.792 2.028 0.113
5 0.417 789.740 0.662 0.037
Sum = 100.000 Sum= 5.573 ----------------------------------------------------------------------- The following loss rate calculations reflect use of the minimum calculated loss rate subtracted from the Storm Rain to produce the maximum Effective Rain value Unit Time Pattern Storm Rain Loss rate(In./Hr) Effective (Hr.) Percent (In/Hr) Max | Low (In/Hr)
1 0.08 1.30 0.195 ( 0.198) 0.175 0.019
2 0.17 1.30 0.195 ( 0.198) 0.175 0.019
3 0.25 1.10 0.165 ( 0.198) 0.148 0.016
4 0.33 1.50 0.225 0.198 ( 0.202) 0.026
5 0.42 1.50 0.225 0.198 ( 0.202) 0.026
6 0.50 1.80 0.270 0.198 ( 0.243) 0.071
7 0.58 1.50 0.225 0.198 ( 0.202) 0.026
8 0.67 1.80 0.270 0.198 ( 0.243) 0.071
9 0.75 1.80 0.270 0.198 ( 0.243) 0.071
10 0.83 1.50 0.225 0.198 ( 0.202) 0.026
11 0.92 1.60 0.240 0.198 ( 0.216) 0.041
12 1.00 1.80 0.270 0.198 ( 0.243) 0.071
13 1.08 2.20 0.329 0.198 ( 0.296) 0.131
14 1.17 2.20 0.329 0.198 ( 0.296) 0.131
15 1.25 2.20 0.329 0.198 ( 0.296) 0.131
16 1.33 2.00 0.299 0.198 ( 0.270) 0.101
17 1.42 2.60 0.389 0.198 ( 0.350) 0.191
18 1.50 2.70 0.404 0.198 ( 0.364) 0.206
19 1.58 2.40 0.359 0.198 ( 0.323) 0.161
20 1.67 2.70 0.404 0.198 ( 0.364) 0.206

Page 2 ends

F.1.d
Packet Pg. 1212 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea310
21 1.75 3.30 0.494 0.198 ( 0.445) 0.296
22 1.83 3.10 0.464 0.198 ( 0.418) 0.266
23 1.92 2.90 0.434 0.198 ( 0.391) 0.236
24 2.00 3.00 0.449 0.198 ( 0.404) 0.251
25 2.08 3.10 0.464 0.198 ( 0.418) 0.266
26 2.17 4.20 0.629 0.198 ( 0.566) 0.430
27 2.25 5.00 0.749 0.198 ( 0.674) 0.550
28 2.33 3.50 0.524 0.198 ( 0.472) 0.326
29 2.42 6.80 1.018 0.198 ( 0.916) 0.820
30 2.50 7.30 1.093 0.198 ( 0.984) 0.895
31 2.58 8.20 1.228 0.198 ( 1.105) 1.029
32 2.67 5.90 0.883 0.198 ( 0.795) 0.685
33 2.75 2.00 0.299 0.198 ( 0.270) 0.101
34 2.83 1.80 0.270 0.198 ( 0.243) 0.071
35 2.92 1.80 0.270 0.198 ( 0.243) 0.071
36 3.00 0.60 0.090 ( 0.198) 0.081 0.009
(Loss Rate Not Used)
Sum = 100.0 Sum = 8.0
Flood volume = Effective rainfall 0.67(In)
times area 5.5(Ac.)/[(In)/(Ft.)] = 0.3(Ac.Ft)
Total soil loss = 0.58(In)
Total soil loss = 0.266(Ac.Ft)
Total rainfall = 1.25(In)
Flood volume = 13458.7 Cubic Feet
Total soil loss = 11589.8 Cubic Feet
-------------------------------------------------------------------- Peak flow rate of this hydrograph = 5.112(CFS)
-------------------------------------------------------------------- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 - H O U R S T O R M
R u n o f f H y d r o g r a p h
-------------------------------------------------------------------- Hydrograph in 5 Minute intervals ((CFS))
-------------------------------------------------------------------- Time(h+m) Volume Ac.Ft Q(CFS) 0 2.5 5.0 7.5 10.0 ----------------------------------------------------------------------- 0+ 5 0.0002 0.04 Q | | | |
0+10 0.0009 0.09 Q | | | |
0+15 0.0016 0.10 Q | | | |
0+20 0.0023 0.11 Q | | | |
0+25 0.0033 0.14 Q | | | |
0+30 0.0049 0.23 Q | | | |
0+35 0.0068 0.28 VQ | | | |
0+40 0.0086 0.26 |Q | | | |
0+45 0.0111 0.37 |Q | | | |
0+50 0.0132 0.31 |Q | | | |
0+55 0.0146 0.21 QV | | | |
1+ 0 0.0166 0.28 |QV | | | |
1+ 5 0.0199 0.48 |QV | | | |
1+10 0.0246 0.68 | QV | | | |
1+15 0.0295 0.72 | QV | | | |
1+20 0.0342 0.67 | Q V | | | |
1+25 0.0393 0.75 | Q V | | | |
1+30 0.0464 1.03 | Q V | | | |
1+35 0.0536 1.04 | Q V | | | |
1+40 0.0605 1.01 | Q V | | | |
1+45 0.0694 1.28 | Q V | | | |
1+50 0.0799 1.52 | Q V | | |
1+55 0.0897 1.44 | Q |V | | |
2+ 0 0.0992 1.37 | Q | V | | |
2+ 5 0.1089 1.42 | Q | V | | |
2+10 0.1211 1.77 | Q | V | | |

Page 3 ends

F.1.d
Packet Pg. 1213 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea310
2+15 0.1383 2.49 | Q| V | | |
2+20 0.1558 2.54 | Q V | |
2+25 0.1755 2.86 | |Q | V | |
2+30 0.2055 4.36 | | Q | V | |
2+35 0.2408 5.11 | | Q |V |
2+40 0.2751 4.98 | | Q| | V |
2+45 0.2957 2.99 | |Q | | V |
2+50 0.3026 1.00 | Q | | | V|
2+55 0.3061 0.52 | Q | | | V|
3+ 0 0.3083 0.31 |Q | | | V|
3+ 5 0.3088 0.08 Q | | | V|
3+10 0.3089 0.02 Q | | | V|
3+15 0.3090 0.00 Q | | | V|
3+20 0.3090 0.00 Q | | | V
-----------------------------------------------------------------------

Page 4 ends

F.1.d
Packet Pg. 1214 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea3100.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
Area A
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 3 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1215 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 0.80 4.42
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.89 10.45
STORM EVENT (YEAR) = 100.00
Area Averaged 2-Year Rainfall = 0.799(In)
Area Averaged 100-Year Rainfall = 1.890(In)
Point rain (area averaged) = 1.890(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 1.890(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-3 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 93.4 0.086 0.000 0.086 1.000

0.086
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0026 0.38 VQ | | |
|
0+10 0.0096 1.01 V Q | | |
|
0+15 0.0168 1.05 V Q | | |
|
0+20 0.0244 1.10 |V Q | | |
|
0+25 0.0338 1.36 |V Q | | |
|
0+30 0.0443 1.53 | V Q | | |
|
0+35 0.0554 1.62 | V Q | | |
|
0+40 0.0663 1.58 | V Q | | |
|
0+45 0.0784 1.75 | V Q | | |
|
0+50 0.0899 1.67 | V Q | | |
|
0+55 0.1003 1.51 | VQ | | |
|
1+ 0 0.1115 1.62 | VQ | | |
|
1+ 5 0.1247 1.93 | VQ | | |
|
1+10 0.1401 2.23 | VQ | | |
|
1+15 0.1558 2.29 | VQ| | |
|
1+20 0.1711 2.22 | QV| | |
|
1+25 0.1872 2.33 | Q| | |
|
1+30 0.2061 2.75 | VQ | |
|
1+35 0.2253 2.78 | |Q | |
|
1+40 0.2440 2.72 | Q V | |
|
1+45 0.2657 3.14 | | Q V | |
|
1+50 0.2898 3.50 | | QV | |
|
1+55 0.3130 3.37 | | Q V | |
|
2+ 0 0.3355 3.27 | | Q V | |
|
2+ 5 0.3585 3.35 | | Q V| |
|
2+10 0.3853 3.88 | | Q V |
|
2+15 0.4195 4.97 | | Q| V |
F.1.d
Packet Pg. 1218 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
2+20 0.4543 5.05 | | Q V |
|
2+25 0.4924 5.53 | | | Q V |
|
2+30 0.5461 7.80 | | | V|Q
|
2+35 0.6077 8.94 | | | | V Q
|
2+40 0.6679 8.74 | | | | QV
|
2+45 0.7074 5.73 | | | Q | V
|
2+50 0.7260 2.71 | Q | | V
|
2+55 0.7397 1.98 | Q | | |
V|
3+ 0 0.7489 1.34 | Q | | |
V|
3+ 5 0.7517 0.40 |Q | | |
V|
3+10 0.7522 0.08 Q | | |
V|
3+15 0.7523 0.02 Q | | |
V|
3+20 0.7523 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1219 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea62.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 6 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1220 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 1.09 6.03
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 2.55 14.10
STORM EVENT (YEAR) = 2.00
Area Averaged 2-Year Rainfall = 1.090(In)
Area Averaged 100-Year Rainfall = 2.550(In)
Point rain (area averaged) = 1.090(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 1.090(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0001 0.01 Q | | |
|
0+10 0.0003 0.03 Q | | |
|
0+15 0.0006 0.04 Q | | |
|
0+20 0.0009 0.04 Q | | |
|
0+25 0.0012 0.04 Q | | |
|
0+30 0.0015 0.05 Q | | |
|
0+35 0.0019 0.05 Q | | |
|
0+40 0.0022 0.05 Q | | |
|
0+45 0.0026 0.05 Q | | |
F.1.d
Packet Pg. 1223 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
0+50 0.0029 0.05 Q | | |
|
0+55 0.0033 0.05 Q | | |
|
1+ 0 0.0036 0.05 QV | | |
|
1+ 5 0.0040 0.06 QV | | |
|
1+10 0.0044 0.06 QV | | |
|
1+15 0.0048 0.06 QV | | |
|
1+20 0.0052 0.06 QV | | |
|
1+25 0.0056 0.06 QV | | |
|
1+30 0.0060 0.06 QV | | |
|
1+35 0.0064 0.06 QV | | |
|
1+40 0.0068 0.06 QV | | |
|
1+45 0.0072 0.06 QV | | |
|
1+50 0.0076 0.06 Q V | | |
|
1+55 0.0080 0.06 Q V | | |
|
2+ 0 0.0085 0.06 Q V | | |
|
2+ 5 0.0089 0.06 Q V | | |
|
2+10 0.0093 0.06 Q V | | |
|
2+15 0.0098 0.06 Q V | | |
|
2+20 0.0102 0.07 Q V | | |
|
2+25 0.0107 0.07 Q V | | |
|
2+30 0.0111 0.07 Q V | | |
|
2+35 0.0116 0.07 Q V | | |
|
2+40 0.0120 0.07 Q V | | |
|
2+45 0.0125 0.07 Q V | | |
|
2+50 0.0130 0.07 Q V | | |
|
2+55 0.0135 0.07 Q V | | |
|
3+ 0 0.0140 0.07 Q V | | |
|
3+ 5 0.0145 0.07 Q V | | |
|
3+10 0.0150 0.08 Q V | | |
|
3+15 0.0156 0.08 Q V | | |
F.1.d
Packet Pg. 1224 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
3+20 0.0161 0.08 Q V | | |
|
3+25 0.0167 0.08 Q V | | |
|
3+30 0.0173 0.09 Q V | | |
|
3+35 0.0180 0.10 Q V | | |
|
3+40 0.0186 0.10 Q V | | |
|
3+45 0.0194 0.10 Q V | | |
|
3+50 0.0201 0.11 Q V | | |
|
3+55 0.0209 0.11 Q V | | |
|
4+ 0 0.0217 0.12 Q V | | |
|
4+ 5 0.0225 0.12 Q V | | |
|
4+10 0.0236 0.16 Q V | | |
|
4+15 0.0251 0.22 Q V | | |
|
4+20 0.0271 0.29 |Q V | | |
|
4+25 0.0296 0.36 |Q V | | |
|
4+30 0.0325 0.41 |Q V | | |
|
4+35 0.0355 0.45 |Q V| | |
|
4+40 0.0391 0.51 | Q V | |
|
4+45 0.0431 0.58 | Q |V | |
|
4+50 0.0474 0.63 | Q | V | |
|
4+55 0.0520 0.67 | Q | V | |
|
5+ 0 0.0570 0.73 | Q | V | |
|
5+ 5 0.0632 0.90 | Q | V | |
|
5+10 0.0716 1.22 | Q | V| |
|
5+15 0.0822 1.53 | Q | | V |
|
5+20 0.0943 1.77 | Q | | V |
|
5+25 0.1084 2.04 | Q | | V|
|
5+30 0.1255 2.48 | Q| | | V
|
5+35 0.1392 2.00 | Q | | | V
|
5+40 0.1430 0.56 | Q | | |
V|
5+45 0.1441 0.16 Q | | |
F.1.d
Packet Pg. 1225 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
5+50 0.1446 0.07 Q | | |
V|
5+55 0.1448 0.03 Q | | |
V|
6+ 0 0.1450 0.02 Q | | |
V|
6+ 5 0.1450 0.01 Q | | |
V|
6+10 0.1451 0.00 Q | | |
V|
6+15 0.1451 0.00 Q | | |
V|
6+20 0.1451 0.00 Q | | |
V|
----------------------------------------------------------------------- F.1.d
Packet Pg. 1226 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea65.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 6 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1227 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 1.09 6.03
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 2.55 14.10
STORM EVENT (YEAR) = 5.00
Area Averaged 2-Year Rainfall = 1.090(In)
Area Averaged 100-Year Rainfall = 2.550(In)
Point rain (area averaged) = 1.432(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 1.432(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0001 0.02 Q | | |
|
0+10 0.0004 0.04 Q | | |
|
0+15 0.0008 0.05 Q | | |
|
0+20 0.0012 0.06 Q | | |
|
0+25 0.0016 0.06 Q | | |
|
0+30 0.0020 0.06 Q | | |
|
0+35 0.0025 0.07 Q | | |
|
0+40 0.0029 0.07 Q | | |
|
0+45 0.0034 0.07 Q | | |
F.1.d
Packet Pg. 1230 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
0+50 0.0038 0.07 Q | | |
|
0+55 0.0043 0.07 Q | | |
|
1+ 0 0.0048 0.07 Q | | |
|
1+ 5 0.0053 0.08 Q | | |
|
1+10 0.0058 0.08 Q | | |
|
1+15 0.0064 0.08 QV | | |
|
1+20 0.0069 0.08 QV | | |
|
1+25 0.0074 0.08 QV | | |
|
1+30 0.0079 0.08 QV | | |
|
1+35 0.0085 0.08 QV | | |
|
1+40 0.0090 0.08 QV | | |
|
1+45 0.0095 0.08 QV | | |
|
1+50 0.0100 0.08 QV | | |
|
1+55 0.0106 0.08 QV | | |
|
2+ 0 0.0111 0.08 QV | | |
|
2+ 5 0.0117 0.08 QV | | |
|
2+10 0.0122 0.08 Q V | | |
|
2+15 0.0128 0.09 Q V | | |
|
2+20 0.0134 0.09 Q V | | |
|
2+25 0.0140 0.09 Q V | | |
|
2+30 0.0146 0.09 Q V | | |
|
2+35 0.0152 0.09 Q V | | |
|
2+40 0.0158 0.09 Q V | | |
|
2+45 0.0164 0.09 Q V | | |
|
2+50 0.0171 0.09 Q V | | |
|
2+55 0.0177 0.10 Q V | | |
|
3+ 0 0.0184 0.10 Q V | | |
|
3+ 5 0.0190 0.10 Q V | | |
|
3+10 0.0197 0.10 Q V | | |
|
3+15 0.0204 0.10 Q V | | |
F.1.d
Packet Pg. 1231 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
3+20 0.0212 0.11 Q V | | |
|
3+25 0.0219 0.11 Q V | | |
|
3+30 0.0227 0.12 Q V | | |
|
3+35 0.0239 0.17 Q V | | |
|
3+40 0.0254 0.22 Q V | | |
|
3+45 0.0272 0.26 |Q V | | |
|
3+50 0.0294 0.32 |Q V | | |
|
3+55 0.0319 0.36 |Q V | | |
|
4+ 0 0.0347 0.41 |Q V | | |
|
4+ 5 0.0379 0.46 |Q V | | |
|
4+10 0.0416 0.54 | Q V | | |
|
4+15 0.0460 0.63 | Q V | | |
|
4+20 0.0510 0.73 | Q V | | |
|
4+25 0.0567 0.83 | Q V| | |
|
4+30 0.0628 0.89 | Q V | |
|
4+35 0.0692 0.93 | Q |V | |
|
4+40 0.0763 1.02 | Q | V | |
|
4+45 0.0839 1.11 | Q | V | |
|
4+50 0.0920 1.18 | Q | V | |
|
4+55 0.1004 1.22 | Q | V | |
|
5+ 0 0.1094 1.31 | Q | V | |
|
5+ 5 0.1199 1.53 | Q | V| |
|
5+10 0.1334 1.95 | Q | |V |
|
5+15 0.1496 2.36 | Q| | V |
|
5+20 0.1680 2.67 | Q | V |
|
5+25 0.1888 3.02 | | Q | V
|
5+30 0.2137 3.60 | | Q | | V
|
5+35 0.2341 2.97 | |Q | | V
|
5+40 0.2408 0.97 | Q | | |
V|
5+45 0.2425 0.25 |Q | | |
F.1.d
Packet Pg. 1232 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
5+50 0.2432 0.10 Q | | |
V|
5+55 0.2435 0.05 Q | | |
V|
6+ 0 0.2437 0.03 Q | | |
V|
6+ 5 0.2438 0.01 Q | | |
V|
6+10 0.2438 0.00 Q | | |
V|
6+15 0.2438 0.00 Q | | |
V|
6+20 0.2438 0.00 Q | | |
V|
----------------------------------------------------------------------- F.1.d
Packet Pg. 1233 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea610
U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version 8.2 Study date 02/19/21 File: moval33prea610.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------------------------------------------------------------------------ Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
--------------------------------------------------------------------- English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
--------------------------------------------------------------------- Gateway Heights
Existing Condition
Unit Hydrograph Runoff
-------------------------------------------------------------------- Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00(Ft.) Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 6 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.09 6.03
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 2.55 14.10
STORM EVENT (YEAR) = 10.00
Area Averaged 2-Year Rainfall = 1.090(In)
Area Averaged 100-Year Rainfall = 2.550(In)

Page 1 ends

F.1.d
Packet Pg. 1234 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea610
Point rain (area averaged) = 1.691(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 1.691(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.) (In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000 0.198
Sum (F) = 0.198
Area averaged mean soil loss (F) (In/Hr) = 0.198
Minimum soil loss rate ((In/Hr)) = 0.099
(for 24 hour storm duration)
Soil low loss rate (decimal) = 0.900
--------------------------------------------------------------------- U n i t H y d r o g r a p h
FOOTHILL S-Curve
-------------------------------------------------------------------- Unit Hydrograph Data
--------------------------------------------------------------------- Unit time period Time % of lag Distribution Unit Hydrograph (hrs) Graph % (CFS)
--------------------------------------------------------------------- 1 0.083 157.948 32.675 1.821
2 0.167 315.896 53.715 2.994
3 0.250 473.844 10.920 0.609
4 0.333 631.792 2.028 0.113
5 0.417 789.740 0.662 0.037
Sum = 100.000 Sum= 5.573 ----------------------------------------------------------------------- The following loss rate calculations reflect use of the minimum calculated loss rate subtracted from the Storm Rain to produce the maximum Effective Rain value Unit Time Pattern Storm Rain Loss rate(In./Hr) Effective (Hr.) Percent (In/Hr) Max | Low (In/Hr)
1 0.08 0.50 0.101 ( 0.198) 0.091 0.010
2 0.17 0.60 0.122 ( 0.198) 0.110 0.012
3 0.25 0.60 0.122 ( 0.198) 0.110 0.012
4 0.33 0.60 0.122 ( 0.198) 0.110 0.012
5 0.42 0.60 0.122 ( 0.198) 0.110 0.012
6 0.50 0.70 0.142 ( 0.198) 0.128 0.014
7 0.58 0.70 0.142 ( 0.198) 0.128 0.014
8 0.67 0.70 0.142 ( 0.198) 0.128 0.014
9 0.75 0.70 0.142 ( 0.198) 0.128 0.014
10 0.83 0.70 0.142 ( 0.198) 0.128 0.014
11 0.92 0.70 0.142 ( 0.198) 0.128 0.014
12 1.00 0.80 0.162 ( 0.198) 0.146 0.016
13 1.08 0.80 0.162 ( 0.198) 0.146 0.016
14 1.17 0.80 0.162 ( 0.198) 0.146 0.016
15 1.25 0.80 0.162 ( 0.198) 0.146 0.016
16 1.33 0.80 0.162 ( 0.198) 0.146 0.016
17 1.42 0.80 0.162 ( 0.198) 0.146 0.016
18 1.50 0.80 0.162 ( 0.198) 0.146 0.016
19 1.58 0.80 0.162 ( 0.198) 0.146 0.016
20 1.67 0.80 0.162 ( 0.198) 0.146 0.016

Page 2 ends

F.1.d
Packet Pg. 1235 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea610
21 1.75 0.80 0.162 ( 0.198) 0.146 0.016
22 1.83 0.80 0.162 ( 0.198) 0.146 0.016
23 1.92 0.80 0.162 ( 0.198) 0.146 0.016
24 2.00 0.90 0.183 ( 0.198) 0.164 0.018
25 2.08 0.80 0.162 ( 0.198) 0.146 0.016
26 2.17 0.90 0.183 ( 0.198) 0.164 0.018
27 2.25 0.90 0.183 ( 0.198) 0.164 0.018
28 2.33 0.90 0.183 ( 0.198) 0.164 0.018
29 2.42 0.90 0.183 ( 0.198) 0.164 0.018
30 2.50 0.90 0.183 ( 0.198) 0.164 0.018
31 2.58 0.90 0.183 ( 0.198) 0.164 0.018
32 2.67 0.90 0.183 ( 0.198) 0.164 0.018
33 2.75 1.00 0.203 ( 0.198) 0.183 0.020
34 2.83 1.00 0.203 ( 0.198) 0.183 0.020
35 2.92 1.00 0.203 ( 0.198) 0.183 0.020
36 3.00 1.00 0.203 ( 0.198) 0.183 0.020
37 3.08 1.00 0.203 ( 0.198) 0.183 0.020
38 3.17 1.10 0.223 0.198 ( 0.201) 0.025
39 3.25 1.10 0.223 0.198 ( 0.201) 0.025
40 3.33 1.10 0.223 0.198 ( 0.201) 0.025
41 3.42 1.20 0.243 0.198 ( 0.219) 0.045
42 3.50 1.30 0.264 0.198 ( 0.237) 0.065
43 3.58 1.40 0.284 0.198 ( 0.256) 0.086
44 3.67 1.40 0.284 0.198 ( 0.256) 0.086
45 3.75 1.50 0.304 0.198 ( 0.274) 0.106
46 3.83 1.50 0.304 0.198 ( 0.274) 0.106
47 3.92 1.60 0.325 0.198 ( 0.292) 0.126
48 4.00 1.60 0.325 0.198 ( 0.292) 0.126
49 4.08 1.70 0.345 0.198 ( 0.310) 0.146
50 4.17 1.80 0.365 0.198 ( 0.329) 0.167
51 4.25 1.90 0.385 0.198 ( 0.347) 0.187
52 4.33 2.00 0.406 0.198 ( 0.365) 0.207
53 4.42 2.10 0.426 0.198 ( 0.383) 0.228
54 4.50 2.10 0.426 0.198 ( 0.383) 0.228
55 4.58 2.20 0.446 0.198 ( 0.402) 0.248
56 4.67 2.30 0.467 0.198 ( 0.420) 0.268
57 4.75 2.40 0.487 0.198 ( 0.438) 0.288
58 4.83 2.40 0.487 0.198 ( 0.438) 0.288
59 4.92 2.50 0.507 0.198 ( 0.456) 0.309
60 5.00 2.60 0.527 0.198 ( 0.475) 0.329
61 5.08 3.10 0.629 0.198 ( 0.566) 0.431
62 5.17 3.60 0.730 0.198 ( 0.657) 0.532
63 5.25 3.90 0.791 0.198 ( 0.712) 0.593
64 5.33 4.20 0.852 0.198 ( 0.767) 0.654
65 5.42 4.70 0.954 0.198 ( 0.858) 0.755
66 5.50 5.60 1.136 0.198 ( 1.022) 0.938
67 5.58 1.90 0.385 0.198 ( 0.347) 0.187
68 5.67 0.90 0.183 ( 0.198) 0.164 0.018
69 5.75 0.60 0.122 ( 0.198) 0.110 0.012
70 5.83 0.50 0.101 ( 0.198) 0.091 0.010
71 5.92 0.30 0.061 ( 0.198) 0.055 0.006
72 6.00 0.20 0.041 ( 0.198) 0.037 0.004
(Loss Rate Not Used)
Sum = 100.0 Sum = 8.5
Flood volume = Effective rainfall 0.70(In)
times area 5.5(Ac.)/[(In)/(Ft.)] = 0.3(Ac.Ft)
Total soil loss = 0.99(In)
Total soil loss = 0.454(Ac.Ft)
Total rainfall = 1.69(In)
Flood volume = 14145.7 Cubic Feet
Total soil loss = 19791.7 Cubic Feet
-------------------------------------------------------------------- Peak flow rate of this hydrograph = 4.455(CFS)

Page 3 ends

F.1.d
Packet Pg. 1236 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea610 -------------------------------------------------------------------- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 6 - H O U R S T O R M
R u n o f f H y d r o g r a p h
-------------------------------------------------------------------- Hydrograph in 5 Minute intervals ((CFS))
-------------------------------------------------------------------- Time(h+m) Volume Ac.Ft Q(CFS) 0 2.5 5.0 7.5 10.0
----------------------------------------------------------------------- 0+ 5 0.0001 0.02 Q | | | |
0+10 0.0005 0.05 Q | | | |
0+15 0.0009 0.06 Q | | | |
0+20 0.0014 0.07 Q | | | |
0+25 0.0019 0.07 Q | | | |
0+30 0.0024 0.07 Q | | | |
0+35 0.0029 0.08 Q | | | |
0+40 0.0034 0.08 Q | | | |
0+45 0.0040 0.08 Q | | | |
0+50 0.0045 0.08 Q | | | |
0+55 0.0051 0.08 Q | | | |
1+ 0 0.0056 0.08 Q | | | |
1+ 5 0.0063 0.09 Q | | | |
1+10 0.0069 0.09 Q | | | |
1+15 0.0075 0.09 Q | | | |
1+20 0.0081 0.09 QV | | | |
1+25 0.0087 0.09 QV | | | |
1+30 0.0094 0.09 QV | | | |
1+35 0.0100 0.09 QV | | | |
1+40 0.0106 0.09 QV | | | |
1+45 0.0112 0.09 QV | | | |
1+50 0.0119 0.09 QV | | | |
1+55 0.0125 0.09 QV | | | |
2+ 0 0.0131 0.09 QV | | | |
2+ 5 0.0138 0.10 QV | | | |
2+10 0.0145 0.10 QV | | | |
2+15 0.0151 0.10 QV | | | |
2+20 0.0158 0.10 QV | | | |
2+25 0.0165 0.10 Q V | | | |
2+30 0.0173 0.10 Q V | | | |
2+35 0.0180 0.10 Q V | | | |
2+40 0.0187 0.10 Q V | | | |
2+45 0.0194 0.11 Q V | | | |
2+50 0.0201 0.11 Q V | | | |
2+55 0.0209 0.11 Q V | | | |
3+ 0 0.0217 0.11 Q V | | | |
3+ 5 0.0225 0.11 Q V | | | |
3+10 0.0233 0.12 Q V | | | |
3+15 0.0242 0.13 Q V | | | |
3+20 0.0252 0.14 Q V | | | |
3+25 0.0264 0.17 Q V | | | |
3+30 0.0283 0.27 |Q V | | | |
3+35 0.0309 0.38 |Q V | | | |
3+40 0.0341 0.46 |Q V | | | |
3+45 0.0376 0.51 | Q V | | | |
3+50 0.0415 0.57 | Q V | | | |
3+55 0.0458 0.62 | Q V | | | |
4+ 0 0.0506 0.69 | Q V | | | |
4+ 5 0.0557 0.74 | Q V | | | |
4+10 0.0614 0.84 | Q V | | | |
4+15 0.0680 0.95 | Q V | | | |
4+20 0.0753 1.06 | Q V| | | |
4+25 0.0833 1.17 | Q V | | |

Page 4 ends

F.1.d
Packet Pg. 1237 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea610
4+30 0.0920 1.25 | Q |V | | |
4+35 0.1009 1.30 | Q | V | | |
4+40 0.1106 1.40 | Q | V | | |
4+45 0.1210 1.51 | Q | V | | |
4+50 0.1320 1.59 | Q | V | | |
4+55 0.1433 1.64 | Q | V | | |
5+ 0 0.1553 1.74 | Q | V| | |
5+ 5 0.1691 2.00 | Q | V | |
5+10 0.1863 2.50 | Q | V | |
5+15 0.2069 2.98 | |Q | V | |
5+20 0.2299 3.35 | | Q | V | |
5+25 0.2559 3.77 | | Q | |V |
5+30 0.2866 4.45 | | Q | | V |
5+35 0.3121 3.71 | | Q | | V |
5+40 0.3209 1.27 | Q | | | V|
5+45 0.3231 0.32 |Q | | | V|
5+50 0.3240 0.12 Q | | | V|
5+55 0.3244 0.06 Q | | | V|
6+ 0 0.3246 0.03 Q | | | V|
6+ 5 0.3247 0.02 Q | | | V|
6+10 0.3247 0.00 Q | | | V|
6+15 0.3247 0.00 Q | | | V|
6+20 0.3247 0.00 Q | | | V
-----------------------------------------------------------------------

Page 5 ends

F.1.d
Packet Pg. 1238 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea6100.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
Area A
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 6 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1239 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 1.09 6.03
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 2.55 14.10
STORM EVENT (YEAR) = 100.00
Area Averaged 2-Year Rainfall = 1.090(In)
Area Averaged 100-Year Rainfall = 2.550(In)
Point rain (area averaged) = 2.550(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 2.550(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-3 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 93.4 0.086 0.000 0.086 1.000

0.086
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0008 0.12 Q | | |
|
0+10 0.0035 0.38 VQ | | |
|
0+15 0.0070 0.51 V Q | | |
|
0+20 0.0107 0.54 V Q | | |
|
0+25 0.0144 0.54 V Q | | |
|
0+30 0.0186 0.60 V Q | | |
|
0+35 0.0233 0.69 V Q | | |
|
0+40 0.0282 0.71 |VQ | | |
|
0+45 0.0332 0.71 |VQ | | |
F.1.d
Packet Pg. 1242 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
0+50 0.0381 0.72 |VQ | | |
|
0+55 0.0430 0.72 |VQ | | |
|
1+ 0 0.0483 0.77 | VQ | | |
|
1+ 5 0.0543 0.86 | VQ | | |
|
1+10 0.0604 0.88 | VQ | | |
|
1+15 0.0665 0.89 | VQ | | |
|
1+20 0.0726 0.89 | Q | | |
|
1+25 0.0787 0.89 | Q | | |
|
1+30 0.0848 0.89 | Q | | |
|
1+35 0.0909 0.89 | Q | | |
|
1+40 0.0970 0.89 | QV | | |
|
1+45 0.1031 0.89 | QV | | |
|
1+50 0.1092 0.89 | QV | | |
|
1+55 0.1153 0.89 | QV | | |
|
2+ 0 0.1218 0.94 | Q V | | |
|
2+ 5 0.1285 0.98 | Q V | | |
|
2+10 0.1352 0.96 | Q V | | |
|
2+15 0.1423 1.04 | Q V | | |
|
2+20 0.1496 1.05 | Q V | | |
|
2+25 0.1568 1.06 | Q V | | |
|
2+30 0.1641 1.06 | Q V | | |
|
2+35 0.1714 1.06 | Q V | | |
|
2+40 0.1787 1.06 | Q V | | |
|
2+45 0.1863 1.11 | Q V | | |
|
2+50 0.1946 1.20 | Q V | | |
|
2+55 0.2031 1.22 | Q V | | |
|
3+ 0 0.2115 1.23 | Q V| | |
|
3+ 5 0.2200 1.23 | Q V| | |
|
3+10 0.2288 1.28 | Q V| | |
|
3+15 0.2383 1.38 | Q V | |
F.1.d
Packet Pg. 1243 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
3+20 0.2479 1.39 | Q V | |
|
3+25 0.2579 1.45 | Q V | |
|
3+30 0.2689 1.60 | Q |V | |
|
3+35 0.2811 1.77 | Q |V | |
|
3+40 0.2940 1.88 | Q | V | |
|
3+45 0.3075 1.96 | Q | V | |
|
3+50 0.3217 2.06 | Q | V | |
|
3+55 0.3364 2.13 | Q | V | |
|
4+ 0 0.3517 2.23 | Q | V | |
|
4+ 5 0.3676 2.30 | Q| V | |
|
4+10 0.3845 2.45 | Q| V | |
|
4+15 0.4025 2.62 | Q V | |
|
4+20 0.4218 2.79 | |Q V | |
|
4+25 0.4421 2.96 | |Q V | |
|
4+30 0.4633 3.08 | | Q V| |
|
4+35 0.4851 3.15 | | Q V |
|
4+40 0.5078 3.31 | | Q |V |
|
4+45 0.5318 3.47 | | Q | V |
|
4+50 0.5565 3.59 | | Q | V |
|
4+55 0.5817 3.67 | | Q | V |
|
5+ 0 0.6080 3.82 | | Q | V |
|
5+ 5 0.6370 4.21 | | Q | V |
|
5+10 0.6712 4.97 | | Q| V |
|
5+15 0.7104 5.69 | | | Q V
|
5+20 0.7534 6.24 | | | Q | V
|
5+25 0.8008 6.88 | | | Q | V
|
5+30 0.8553 7.91 | | | |Q V
|
5+35 0.9019 6.78 | | | Q | V
|
5+40 0.9227 3.02 | | Q | |
V|
5+45 0.9316 1.28 | Q | | |
F.1.d
Packet Pg. 1244 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
5+50 0.9360 0.65 | Q | | |
V|
5+55 0.9382 0.32 |Q | | |
V|
6+ 0 0.9389 0.10 Q | | |
V|
6+ 5 0.9391 0.04 Q | | |
V|
6+10 0.9392 0.01 Q | | |
V|
6+15 0.9392 0.00 Q | | |
V|
6+20 0.9392 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1245 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea242.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 24 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1246 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 1.93 10.67
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 4.64 25.66
STORM EVENT (YEAR) = 2.00
Area Averaged 2-Year Rainfall = 1.930(In)
Area Averaged 100-Year Rainfall = 4.640(In)
Point rain (area averaged) = 1.930(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 1.930(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

0.198
Area averaged mean soil loss (F) (In/Hr) = 0.198
Minimum soil loss rate ((In/Hr)) = 0.099
(for 24 hour storm duration)
Soil low loss rate (decimal) = 0.900
------------------------------------------------------------------ ---
U n i t H y d r o g r a p h
FOOTHILL S-Curve
------------------------------------------------------------------ --
Unit Hydrograph Data
------------------------------------------------------------------ ---
Unit time period Time % of lag Distribution Unit Hydrograph (hrs) Graph % (CFS)
------------------------------------------------------------------ ---
1 0.083 157.948 32.675 1.821
2 0.167 315.896 53.715 2.994
3 0.250 473.844 10.920 0.609
4 0.333 631.792 2.028 0.113
5 0.417 789.740 0.662 0.037
Sum = 100.000 Sum= 5.573
----------------------------------------------------------------------- The following loss rate calculations reflect use of the minimum calculated loss
rate subtracted from the Storm Rain to produce the maximum Effective Rain value
F.1.d
Packet Pg. 1247 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Unit Time Pattern Storm Rain Loss rate(In./Hr) Effective (Hr.) Percent (In/Hr) Max | Low (In/Hr)
1 0.08 0.07 0.015 ( 0.352) 0.014 0.002
2 0.17 0.07 0.015 ( 0.350) 0.014 0.002
3 0.25 0.07 0.015 ( 0.349) 0.014 0.002
4 0.33 0.10 0.023 ( 0.348) 0.021 0.002
5 0.42 0.10 0.023 ( 0.346) 0.021 0.002
6 0.50 0.10 0.023 ( 0.345) 0.021 0.002
7 0.58 0.10 0.023 ( 0.344) 0.021 0.002
8 0.67 0.10 0.023 ( 0.342) 0.021 0.002
9 0.75 0.10 0.023 ( 0.341) 0.021 0.002
10 0.83 0.13 0.031 ( 0.340) 0.028 0.003
11 0.92 0.13 0.031 ( 0.338) 0.028 0.003
12 1.00 0.13 0.031 ( 0.337) 0.028 0.003
13 1.08 0.10 0.023 ( 0.336) 0.021 0.002
14 1.17 0.10 0.023 ( 0.334) 0.021 0.002
15 1.25 0.10 0.023 ( 0.333) 0.021 0.002
16 1.33 0.10 0.023 ( 0.332) 0.021 0.002
17 1.42 0.10 0.023 ( 0.330) 0.021 0.002
18 1.50 0.10 0.023 ( 0.329) 0.021 0.002
19 1.58 0.10 0.023 ( 0.328) 0.021 0.002
20 1.67 0.10 0.023 ( 0.326) 0.021 0.002
21 1.75 0.10 0.023 ( 0.325) 0.021 0.002
22 1.83 0.13 0.031 ( 0.324) 0.028 0.003
23 1.92 0.13 0.031 ( 0.322) 0.028 0.003
24 2.00 0.13 0.031 ( 0.321) 0.028 0.003
25 2.08 0.13 0.031 ( 0.320) 0.028 0.003
26 2.17 0.13 0.031 ( 0.318) 0.028 0.003
27 2.25 0.13 0.031 ( 0.317) 0.028 0.003
28 2.33 0.13 0.031 ( 0.316) 0.028 0.003
29 2.42 0.13 0.031 ( 0.315) 0.028 0.003
30 2.50 0.13 0.031 ( 0.313) 0.028 0.003
31 2.58 0.17 0.039 ( 0.312) 0.035 0.004
32 2.67 0.17 0.039 ( 0.311) 0.035 0.004
33 2.75 0.17 0.039 ( 0.310) 0.035 0.004
34 2.83 0.17 0.039 ( 0.308) 0.035 0.004
35 2.92 0.17 0.039 ( 0.307) 0.035 0.004
36 3.00 0.17 0.039 ( 0.306) 0.035 0.004
37 3.08 0.17 0.039 ( 0.304) 0.035 0.004
38 3.17 0.17 0.039 ( 0.303) 0.035 0.004
39 3.25 0.17 0.039 ( 0.302) 0.035 0.004
40 3.33 0.17 0.039 ( 0.301) 0.035 0.004
41 3.42 0.17 0.039 ( 0.299) 0.035 0.004
42 3.50 0.17 0.039 ( 0.298) 0.035 0.004
43 3.58 0.17 0.039 ( 0.297) 0.035 0.004
44 3.67 0.17 0.039 ( 0.296) 0.035 0.004
45 3.75 0.17 0.039 ( 0.294) 0.035 0.004
46 3.83 0.20 0.046 ( 0.293) 0.042 0.005
47 3.92 0.20 0.046 ( 0.292) 0.042 0.005
48 4.00 0.20 0.046 ( 0.291) 0.042 0.005
49 4.08 0.20 0.046 ( 0.289) 0.042 0.005
50 4.17 0.20 0.046 ( 0.288) 0.042 0.005
51 4.25 0.20 0.046 ( 0.287) 0.042 0.005
52 4.33 0.23 0.054 ( 0.286) 0.049 0.005
53 4.42 0.23 0.054 ( 0.285) 0.049 0.005
54 4.50 0.23 0.054 ( 0.283) 0.049 0.005
55 4.58 0.23 0.054 ( 0.282) 0.049 0.005
56 4.67 0.23 0.054 ( 0.281) 0.049 0.005
57 4.75 0.23 0.054 ( 0.280) 0.049 0.005
F.1.d
Packet Pg. 1248 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 58 4.83 0.27 0.062 ( 0.278) 0.056 0.006
59 4.92 0.27 0.062 ( 0.277) 0.056 0.006
60 5.00 0.27 0.062 ( 0.276) 0.056 0.006
61 5.08 0.20 0.046 ( 0.275) 0.042 0.005
62 5.17 0.20 0.046 ( 0.274) 0.042 0.005
63 5.25 0.20 0.046 ( 0.272) 0.042 0.005
64 5.33 0.23 0.054 ( 0.271) 0.049 0.005
65 5.42 0.23 0.054 ( 0.270) 0.049 0.005
66 5.50 0.23 0.054 ( 0.269) 0.049 0.005
67 5.58 0.27 0.062 ( 0.268) 0.056 0.006
68 5.67 0.27 0.062 ( 0.267) 0.056 0.006
69 5.75 0.27 0.062 ( 0.265) 0.056 0.006
70 5.83 0.27 0.062 ( 0.264) 0.056 0.006
71 5.92 0.27 0.062 ( 0.263) 0.056 0.006
72 6.00 0.27 0.062 ( 0.262) 0.056 0.006
73 6.08 0.30 0.069 ( 0.261) 0.063 0.007
74 6.17 0.30 0.069 ( 0.260) 0.063 0.007
75 6.25 0.30 0.069 ( 0.258) 0.063 0.007
76 6.33 0.30 0.069 ( 0.257) 0.063 0.007
77 6.42 0.30 0.069 ( 0.256) 0.063 0.007
78 6.50 0.30 0.069 ( 0.255) 0.063 0.007
79 6.58 0.33 0.077 ( 0.254) 0.069 0.008
80 6.67 0.33 0.077 ( 0.253) 0.069 0.008
81 6.75 0.33 0.077 ( 0.252) 0.069 0.008
82 6.83 0.33 0.077 ( 0.250) 0.069 0.008
83 6.92 0.33 0.077 ( 0.249) 0.069 0.008
84 7.00 0.33 0.077 ( 0.248) 0.069 0.008
85 7.08 0.33 0.077 ( 0.247) 0.069 0.008
86 7.17 0.33 0.077 ( 0.246) 0.069 0.008
87 7.25 0.33 0.077 ( 0.245) 0.069 0.008
88 7.33 0.37 0.085 ( 0.244) 0.076 0.008
89 7.42 0.37 0.085 ( 0.243) 0.076 0.008
90 7.50 0.37 0.085 ( 0.241) 0.076 0.008
91 7.58 0.40 0.093 ( 0.240) 0.083 0.009
92 7.67 0.40 0.093 ( 0.239) 0.083 0.009
93 7.75 0.40 0.093 ( 0.238) 0.083 0.009
94 7.83 0.43 0.100 ( 0.237) 0.090 0.010
95 7.92 0.43 0.100 ( 0.236) 0.090 0.010
96 8.00 0.43 0.100 ( 0.235) 0.090 0.010
97 8.08 0.50 0.116 ( 0.234) 0.104 0.012
98 8.17 0.50 0.116 ( 0.233) 0.104 0.012
99 8.25 0.50 0.116 ( 0.232) 0.104 0.012
100 8.33 0.50 0.116 ( 0.230) 0.104 0.012
101 8.42 0.50 0.116 ( 0.229) 0.104 0.012
102 8.50 0.50 0.116 ( 0.228) 0.104 0.012
103 8.58 0.53 0.124 ( 0.227) 0.111 0.012
104 8.67 0.53 0.124 ( 0.226) 0.111 0.012
105 8.75 0.53 0.124 ( 0.225) 0.111 0.012
106 8.83 0.57 0.131 ( 0.224) 0.118 0.013
107 8.92 0.57 0.131 ( 0.223) 0.118 0.013
108 9.00 0.57 0.131 ( 0.222) 0.118 0.013
109 9.08 0.63 0.147 ( 0.221) 0.132 0.015
110 9.17 0.63 0.147 ( 0.220) 0.132 0.015
111 9.25 0.63 0.147 ( 0.219) 0.132 0.015
112 9.33 0.67 0.154 ( 0.218) 0.139 0.015
113 9.42 0.67 0.154 ( 0.217) 0.139 0.015
114 9.50 0.67 0.154 ( 0.216) 0.139 0.015
115 9.58 0.70 0.162 ( 0.215) 0.146 0.016
116 9.67 0.70 0.162 ( 0.214) 0.146 0.016
117 9.75 0.70 0.162 ( 0.213) 0.146 0.016
F.1.d
Packet Pg. 1249 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 118 9.83 0.73 0.170 ( 0.212) 0.153 0.017
119 9.92 0.73 0.170 ( 0.211) 0.153 0.017
120 10.00 0.73 0.170 ( 0.210) 0.153 0.017
121 10.08 0.50 0.116 ( 0.208) 0.104 0.012
122 10.17 0.50 0.116 ( 0.207) 0.104 0.012
123 10.25 0.50 0.116 ( 0.206) 0.104 0.012
124 10.33 0.50 0.116 ( 0.205) 0.104 0.012
125 10.42 0.50 0.116 ( 0.204) 0.104 0.012
126 10.50 0.50 0.116 ( 0.203) 0.104 0.012
127 10.58 0.67 0.154 ( 0.202) 0.139 0.015
128 10.67 0.67 0.154 ( 0.201) 0.139 0.015
129 10.75 0.67 0.154 ( 0.201) 0.139 0.015
130 10.83 0.67 0.154 ( 0.200) 0.139 0.015
131 10.92 0.67 0.154 ( 0.199) 0.139 0.015
132 11.00 0.67 0.154 ( 0.198) 0.139 0.015
133 11.08 0.63 0.147 ( 0.197) 0.132 0.015
134 11.17 0.63 0.147 ( 0.196) 0.132 0.015
135 11.25 0.63 0.147 ( 0.195) 0.132 0.015
136 11.33 0.63 0.147 ( 0.194) 0.132 0.015
137 11.42 0.63 0.147 ( 0.193) 0.132 0.015
138 11.50 0.63 0.147 ( 0.192) 0.132 0.015
139 11.58 0.57 0.131 ( 0.191) 0.118 0.013
140 11.67 0.57 0.131 ( 0.190) 0.118 0.013
141 11.75 0.57 0.131 ( 0.189) 0.118 0.013
142 11.83 0.60 0.139 ( 0.188) 0.125 0.014
143 11.92 0.60 0.139 ( 0.187) 0.125 0.014
144 12.00 0.60 0.139 ( 0.186) 0.125 0.014
145 12.08 0.83 0.193 ( 0.185) 0.174 0.019
146 12.17 0.83 0.193 ( 0.184) 0.174 0.019
147 12.25 0.83 0.193 ( 0.183) 0.174 0.019
148 12.33 0.87 0.201 ( 0.182) 0.181 0.020
149 12.42 0.87 0.201 ( 0.182) 0.181 0.020
150 12.50 0.87 0.201 0.181 ( 0.181) 0.020
151 12.58 0.93 0.216 0.180 ( 0.195) 0.036
152 12.67 0.93 0.216 0.179 ( 0.195) 0.037
153 12.75 0.93 0.216 0.178 ( 0.195) 0.038
154 12.83 0.97 0.224 0.177 ( 0.201) 0.047
155 12.92 0.97 0.224 0.176 ( 0.201) 0.048
156 13.00 0.97 0.224 0.175 ( 0.201) 0.049
157 13.08 1.13 0.262 0.174 ( 0.236) 0.088
158 13.17 1.13 0.262 0.173 ( 0.236) 0.089
159 13.25 1.13 0.262 0.173 ( 0.236) 0.090
160 13.33 1.13 0.262 0.172 ( 0.236) 0.091
161 13.42 1.13 0.262 0.171 ( 0.236) 0.092
162 13.50 1.13 0.262 0.170 ( 0.236) 0.093
163 13.58 0.77 0.178 ( 0.169) 0.160 0.018
164 13.67 0.77 0.178 ( 0.168) 0.160 0.018
165 13.75 0.77 0.178 ( 0.167) 0.160 0.018
166 13.83 0.77 0.178 ( 0.166) 0.160 0.018
167 13.92 0.77 0.178 ( 0.166) 0.160 0.018
168 14.00 0.77 0.178 ( 0.165) 0.160 0.018
169 14.08 0.90 0.208 0.164 ( 0.188) 0.044
170 14.17 0.90 0.208 0.163 ( 0.188) 0.045
171 14.25 0.90 0.208 0.162 ( 0.188) 0.046
172 14.33 0.87 0.201 0.161 ( 0.181) 0.039
173 14.42 0.87 0.201 0.161 ( 0.181) 0.040
174 14.50 0.87 0.201 0.160 ( 0.181) 0.041
175 14.58 0.87 0.201 0.159 ( 0.181) 0.042
176 14.67 0.87 0.201 0.158 ( 0.181) 0.043
177 14.75 0.87 0.201 0.157 ( 0.181) 0.043
F.1.d
Packet Pg. 1250 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 178 14.83 0.83 0.193 0.157 ( 0.174) 0.036
179 14.92 0.83 0.193 0.156 ( 0.174) 0.037
180 15.00 0.83 0.193 0.155 ( 0.174) 0.038
181 15.08 0.80 0.185 0.154 ( 0.167) 0.031
182 15.17 0.80 0.185 0.153 ( 0.167) 0.032
183 15.25 0.80 0.185 0.153 ( 0.167) 0.033
184 15.33 0.77 0.178 0.152 ( 0.160) 0.026
185 15.42 0.77 0.178 0.151 ( 0.160) 0.027
186 15.50 0.77 0.178 0.150 ( 0.160) 0.027
187 15.58 0.63 0.147 ( 0.149) 0.132 0.015
188 15.67 0.63 0.147 ( 0.149) 0.132 0.015
189 15.75 0.63 0.147 ( 0.148) 0.132 0.015
190 15.83 0.63 0.147 ( 0.147) 0.132 0.015
191 15.92 0.63 0.147 ( 0.146) 0.132 0.015
192 16.00 0.63 0.147 ( 0.146) 0.132 0.015
193 16.08 0.13 0.031 ( 0.145) 0.028 0.003
194 16.17 0.13 0.031 ( 0.144) 0.028 0.003
195 16.25 0.13 0.031 ( 0.143) 0.028 0.003
196 16.33 0.13 0.031 ( 0.143) 0.028 0.003
197 16.42 0.13 0.031 ( 0.142) 0.028 0.003
198 16.50 0.13 0.031 ( 0.141) 0.028 0.003
199 16.58 0.10 0.023 ( 0.141) 0.021 0.002
200 16.67 0.10 0.023 ( 0.140) 0.021 0.002
201 16.75 0.10 0.023 ( 0.139) 0.021 0.002
202 16.83 0.10 0.023 ( 0.138) 0.021 0.002
203 16.92 0.10 0.023 ( 0.138) 0.021 0.002
204 17.00 0.10 0.023 ( 0.137) 0.021 0.002
205 17.08 0.17 0.039 ( 0.136) 0.035 0.004
206 17.17 0.17 0.039 ( 0.136) 0.035 0.004
207 17.25 0.17 0.039 ( 0.135) 0.035 0.004
208 17.33 0.17 0.039 ( 0.134) 0.035 0.004
209 17.42 0.17 0.039 ( 0.134) 0.035 0.004
210 17.50 0.17 0.039 ( 0.133) 0.035 0.004
211 17.58 0.17 0.039 ( 0.132) 0.035 0.004
212 17.67 0.17 0.039 ( 0.132) 0.035 0.004
213 17.75 0.17 0.039 ( 0.131) 0.035 0.004
214 17.83 0.13 0.031 ( 0.130) 0.028 0.003
215 17.92 0.13 0.031 ( 0.130) 0.028 0.003
216 18.00 0.13 0.031 ( 0.129) 0.028 0.003
217 18.08 0.13 0.031 ( 0.128) 0.028 0.003
218 18.17 0.13 0.031 ( 0.128) 0.028 0.003
219 18.25 0.13 0.031 ( 0.127) 0.028 0.003
220 18.33 0.13 0.031 ( 0.127) 0.028 0.003
221 18.42 0.13 0.031 ( 0.126) 0.028 0.003
222 18.50 0.13 0.031 ( 0.125) 0.028 0.003
223 18.58 0.10 0.023 ( 0.125) 0.021 0.002
224 18.67 0.10 0.023 ( 0.124) 0.021 0.002
225 18.75 0.10 0.023 ( 0.124) 0.021 0.002
226 18.83 0.07 0.015 ( 0.123) 0.014 0.002
227 18.92 0.07 0.015 ( 0.122) 0.014 0.002
228 19.00 0.07 0.015 ( 0.122) 0.014 0.002
229 19.08 0.10 0.023 ( 0.121) 0.021 0.002
230 19.17 0.10 0.023 ( 0.121) 0.021 0.002
231 19.25 0.10 0.023 ( 0.120) 0.021 0.002
232 19.33 0.13 0.031 ( 0.119) 0.028 0.003
233 19.42 0.13 0.031 ( 0.119) 0.028 0.003
234 19.50 0.13 0.031 ( 0.118) 0.028 0.003
235 19.58 0.10 0.023 ( 0.118) 0.021 0.002
236 19.67 0.10 0.023 ( 0.117) 0.021 0.002
237 19.75 0.10 0.023 ( 0.117) 0.021 0.002
F.1.d
Packet Pg. 1251 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 238 19.83 0.07 0.015 ( 0.116) 0.014 0.002
239 19.92 0.07 0.015 ( 0.116) 0.014 0.002
240 20.00 0.07 0.015 ( 0.115) 0.014 0.002
241 20.08 0.10 0.023 ( 0.115) 0.021 0.002
242 20.17 0.10 0.023 ( 0.114) 0.021 0.002
243 20.25 0.10 0.023 ( 0.114) 0.021 0.002
244 20.33 0.10 0.023 ( 0.113) 0.021 0.002
245 20.42 0.10 0.023 ( 0.113) 0.021 0.002
246 20.50 0.10 0.023 ( 0.112) 0.021 0.002
247 20.58 0.10 0.023 ( 0.112) 0.021 0.002
248 20.67 0.10 0.023 ( 0.111) 0.021 0.002
249 20.75 0.10 0.023 ( 0.111) 0.021 0.002
250 20.83 0.07 0.015 ( 0.110) 0.014 0.002
251 20.92 0.07 0.015 ( 0.110) 0.014 0.002
252 21.00 0.07 0.015 ( 0.110) 0.014 0.002
253 21.08 0.10 0.023 ( 0.109) 0.021 0.002
254 21.17 0.10 0.023 ( 0.109) 0.021 0.002
255 21.25 0.10 0.023 ( 0.108) 0.021 0.002
256 21.33 0.07 0.015 ( 0.108) 0.014 0.002
257 21.42 0.07 0.015 ( 0.107) 0.014 0.002
258 21.50 0.07 0.015 ( 0.107) 0.014 0.002
259 21.58 0.10 0.023 ( 0.107) 0.021 0.002
260 21.67 0.10 0.023 ( 0.106) 0.021 0.002
261 21.75 0.10 0.023 ( 0.106) 0.021 0.002
262 21.83 0.07 0.015 ( 0.105) 0.014 0.002
263 21.92 0.07 0.015 ( 0.105) 0.014 0.002
264 22.00 0.07 0.015 ( 0.105) 0.014 0.002
265 22.08 0.10 0.023 ( 0.104) 0.021 0.002
266 22.17 0.10 0.023 ( 0.104) 0.021 0.002
267 22.25 0.10 0.023 ( 0.104) 0.021 0.002
268 22.33 0.07 0.015 ( 0.103) 0.014 0.002
269 22.42 0.07 0.015 ( 0.103) 0.014 0.002
270 22.50 0.07 0.015 ( 0.103) 0.014 0.002
271 22.58 0.07 0.015 ( 0.102) 0.014 0.002
272 22.67 0.07 0.015 ( 0.102) 0.014 0.002
273 22.75 0.07 0.015 ( 0.102) 0.014 0.002
274 22.83 0.07 0.015 ( 0.102) 0.014 0.002
275 22.92 0.07 0.015 ( 0.101) 0.014 0.002
276 23.00 0.07 0.015 ( 0.101) 0.014 0.002
277 23.08 0.07 0.015 ( 0.101) 0.014 0.002
278 23.17 0.07 0.015 ( 0.101) 0.014 0.002
279 23.25 0.07 0.015 ( 0.100) 0.014 0.002
280 23.33 0.07 0.015 ( 0.100) 0.014 0.002
281 23.42 0.07 0.015 ( 0.100) 0.014 0.002
282 23.50 0.07 0.015 ( 0.100) 0.014 0.002
283 23.58 0.07 0.015 ( 0.100) 0.014 0.002
284 23.67 0.07 0.015 ( 0.100) 0.014 0.002
285 23.75 0.07 0.015 ( 0.099) 0.014 0.002
286 23.83 0.07 0.015 ( 0.099) 0.014 0.002
287 23.92 0.07 0.015 ( 0.099) 0.014 0.002
288 24.00 0.07 0.015 ( 0.099) 0.014 0.002
(Loss Rate Not Used)
Sum = 100.0 Sum = 3.1
Flood volume = Effective rainfall 0.26(In)
times area 5.5(Ac.)/[(In)/(Ft.)] = 0.1(Ac.Ft)
Total soil loss = 1.67(In)
Total soil loss = 0.769(Ac.Ft)
Total rainfall = 1.93(In)
Flood volume = 5261.5 Cubic Feet
Total soil loss = 33480.7 Cubic Feet
F.1.d
Packet Pg. 1252 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) ------------------------------------------------------------------ --
Peak flow rate of this hydrograph = 0.512(CFS)
------------------------------------------------------------------ --
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++
24 - H O U R S T O R M
R u n o f f H y d r o g r a p h
------------------------------------------------------------------ --
Hydrograph in 5 Minute intervals ((CFS))
------------------------------------------------------------------ --
Time(h+m) Volume Ac.Ft Q(CFS) 0 2.5 5.0 7.5

10.0 ----------------------------------------------------------------------- 0+ 5 0.0000 0.00 Q | | |
|
0+10 0.0001 0.01 Q | | |
|
0+15 0.0001 0.01 Q | | |
|
0+20 0.0002 0.01 Q | | |
|
0+25 0.0003 0.01 Q | | |
|
0+30 0.0004 0.01 Q | | |
|
0+35 0.0005 0.01 Q | | |
|
0+40 0.0005 0.01 Q | | |
|
0+45 0.0006 0.01 Q | | |
|
0+50 0.0007 0.01 Q | | |
|
0+55 0.0008 0.02 Q | | |
|
1+ 0 0.0010 0.02 Q | | |
|
1+ 5 0.0011 0.02 Q | | |
|
1+10 0.0012 0.01 Q | | |
|
1+15 0.0013 0.01 Q | | |
|
1+20 0.0013 0.01 Q | | |
|
1+25 0.0014 0.01 Q | | |
|
1+30 0.0015 0.01 Q | | |
|
1+35 0.0016 0.01 Q | | |
|
1+40 0.0017 0.01 Q | | |
|
1+45 0.0018 0.01 Q | | |
F.1.d
Packet Pg. 1253 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
1+50 0.0019 0.01 Q | | |
|
1+55 0.0020 0.02 Q | | |
|
2+ 0 0.0021 0.02 Q | | |
|
2+ 5 0.0022 0.02 Q | | |
|
2+10 0.0024 0.02 Q | | |
|
2+15 0.0025 0.02 Q | | |
|
2+20 0.0026 0.02 Q | | |
|
2+25 0.0027 0.02 Q | | |
|
2+30 0.0028 0.02 Q | | |
|
2+35 0.0030 0.02 Q | | |
|
2+40 0.0031 0.02 QV | | |
|
2+45 0.0033 0.02 QV | | |
|
2+50 0.0034 0.02 QV | | |
|
2+55 0.0036 0.02 QV | | |
|
3+ 0 0.0037 0.02 QV | | |
|
3+ 5 0.0038 0.02 QV | | |
|
3+10 0.0040 0.02 QV | | |
|
3+15 0.0041 0.02 QV | | |
|
3+20 0.0043 0.02 QV | | |
|
3+25 0.0044 0.02 QV | | |
|
3+30 0.0046 0.02 QV | | |
|
3+35 0.0047 0.02 QV | | |
|
3+40 0.0049 0.02 QV | | |
|
3+45 0.0050 0.02 QV | | |
|
3+50 0.0052 0.02 QV | | |
|
3+55 0.0054 0.03 QV | | |
|
4+ 0 0.0055 0.03 QV | | |
|
4+ 5 0.0057 0.03 QV | | |
|
4+10 0.0059 0.03 QV | | |
|
4+15 0.0061 0.03 Q V | | |
F.1.d
Packet Pg. 1254 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
4+20 0.0063 0.03 Q V | | |
|
4+25 0.0065 0.03 Q V | | |
|
4+30 0.0067 0.03 Q V | | |
|
4+35 0.0069 0.03 Q V | | |
|
4+40 0.0071 0.03 Q V | | |
|
4+45 0.0073 0.03 Q V | | |
|
4+50 0.0075 0.03 Q V | | |
|
4+55 0.0077 0.03 Q V | | |
|
5+ 0 0.0080 0.03 Q V | | |
|
5+ 5 0.0082 0.03 Q V | | |
|
5+10 0.0084 0.03 Q V | | |
|
5+15 0.0086 0.03 Q V | | |
|
5+20 0.0088 0.03 Q V | | |
|
5+25 0.0090 0.03 Q V | | |
|
5+30 0.0092 0.03 Q V | | |
|
5+35 0.0094 0.03 Q V | | |
|
5+40 0.0096 0.03 Q V | | |
|
5+45 0.0099 0.03 Q V | | |
|
5+50 0.0101 0.03 Q V | | |
|
5+55 0.0103 0.03 Q V | | |
|
6+ 0 0.0106 0.03 Q V | | |
|
6+ 5 0.0108 0.04 Q V | | |
|
6+10 0.0111 0.04 Q V | | |
|
6+15 0.0113 0.04 Q V | | |
|
6+20 0.0116 0.04 Q V | | |
|
6+25 0.0119 0.04 Q V | | |
|
6+30 0.0121 0.04 Q V | | |
|
6+35 0.0124 0.04 Q V | | |
|
6+40 0.0127 0.04 Q V | | |
|
6+45 0.0130 0.04 Q V | | |
F.1.d
Packet Pg. 1255 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
6+50 0.0133 0.04 Q V | | |
|
6+55 0.0136 0.04 Q V | | |
|
7+ 0 0.0139 0.04 Q V | | |
|
7+ 5 0.0142 0.04 Q V | | |
|
7+10 0.0145 0.04 Q V | | |
|
7+15 0.0148 0.04 Q V | | |
|
7+20 0.0151 0.04 Q V | | |
|
7+25 0.0154 0.05 Q V | | |
|
7+30 0.0157 0.05 Q V | | |
|
7+35 0.0161 0.05 Q V | | |
|
7+40 0.0164 0.05 Q V | | |
|
7+45 0.0168 0.05 Q V | | |
|
7+50 0.0171 0.05 Q V | | |
|
7+55 0.0175 0.06 Q V | | |
|
8+ 0 0.0179 0.06 Q V | | |
|
8+ 5 0.0183 0.06 Q V | | |
|
8+10 0.0187 0.06 Q V | | |
|
8+15 0.0192 0.06 Q V | | |
|
8+20 0.0196 0.06 Q V | | |
|
8+25 0.0201 0.06 Q V | | |
|
8+30 0.0205 0.06 Q V | | |
|
8+35 0.0210 0.07 Q V | | |
|
8+40 0.0215 0.07 Q V | | |
|
8+45 0.0219 0.07 Q V | | |
|
8+50 0.0224 0.07 Q V | | |
|
8+55 0.0229 0.07 Q V | | |
|
9+ 0 0.0234 0.07 Q V | | |
|
9+ 5 0.0239 0.08 Q V | | |
|
9+10 0.0245 0.08 Q V | | |
|
9+15 0.0251 0.08 Q V | | |
F.1.d
Packet Pg. 1256 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
9+20 0.0256 0.08 Q V | | |
|
9+25 0.0262 0.09 Q V | | |
|
9+30 0.0268 0.09 Q V | | |
|
9+35 0.0274 0.09 Q V| | |
|
9+40 0.0280 0.09 Q V| | |
|
9+45 0.0286 0.09 Q V| | |
|
9+50 0.0293 0.09 Q V| | |
|
9+55 0.0299 0.09 Q V| | |
|
10+ 0 0.0306 0.09 Q V | |
|
10+ 5 0.0312 0.08 Q V | |
|
10+10 0.0316 0.07 Q V | |
|
10+15 0.0321 0.07 Q V | |
|
10+20 0.0325 0.06 Q V | |
|
10+25 0.0330 0.06 Q V | |
|
10+30 0.0334 0.06 Q |V | |
|
10+35 0.0339 0.07 Q |V | |
|
10+40 0.0345 0.08 Q |V | |
|
10+45 0.0351 0.09 Q |V | |
|
10+50 0.0357 0.09 Q |V | |
|
10+55 0.0363 0.09 Q | V | |
|
11+ 0 0.0369 0.09 Q | V | |
|
11+ 5 0.0374 0.08 Q | V | |
|
11+10 0.0380 0.08 Q | V | |
|
11+15 0.0386 0.08 Q | V | |
|
11+20 0.0391 0.08 Q | V | |
|
11+25 0.0397 0.08 Q | V | |
|
11+30 0.0403 0.08 Q | V | |
|
11+35 0.0408 0.08 Q | V | |
|
11+40 0.0413 0.07 Q | V | |
|
11+45 0.0418 0.07 Q | V | |
F.1.d
Packet Pg. 1257 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
11+50 0.0423 0.07 Q | V | |
|
11+55 0.0429 0.08 Q | V | |
|
12+ 0 0.0434 0.08 Q | V | |
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12+ 5 0.0440 0.09 Q | V | |
|
12+10 0.0447 0.10 Q | V | |
|
12+15 0.0454 0.11 Q | V | |
|
12+20 0.0462 0.11 Q | V | |
|
12+25 0.0470 0.11 Q | V | |
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12+30 0.0477 0.11 Q | V | |
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12+35 0.0487 0.14 Q | V | |
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12+40 0.0500 0.19 Q | V | |
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12+45 0.0515 0.21 Q | V | |
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12+50 0.0530 0.23 Q | V | |
|
12+55 0.0548 0.26 |Q | V | |
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13+ 0 0.0566 0.27 |Q | V | |
|
13+ 5 0.0590 0.34 |Q | V| |
|
13+10 0.0622 0.46 |Q | V |
|
13+15 0.0656 0.49 |Q | |V |
|
13+20 0.0690 0.50 | Q | | V |
|
13+25 0.0725 0.51 | Q | | V |
|
13+30 0.0760 0.51 | Q | | V |
|
13+35 0.0786 0.38 |Q | | V |
|
13+40 0.0797 0.16 Q | | V |
|
13+45 0.0805 0.11 Q | | V |
|
13+50 0.0812 0.10 Q | | V |
|
13+55 0.0819 0.10 Q | | V |
|
14+ 0 0.0825 0.10 Q | | V |
|
14+ 5 0.0835 0.15 Q | | V |
|
14+10 0.0851 0.23 Q | | V |
|
14+15 0.0868 0.25 Q | | V |
F.1.d
Packet Pg. 1258 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
14+20 0.0885 0.24 Q | | V|
|
14+25 0.0901 0.23 Q | | V|
|
14+30 0.0916 0.23 Q | | V
|
14+35 0.0932 0.23 Q | | V
|
14+40 0.0948 0.23 Q | | |V
|
14+45 0.0964 0.24 Q | | |V
|
14+50 0.0980 0.23 Q | | | V
|
14+55 0.0995 0.21 Q | | | V
|
15+ 0 0.1009 0.21 Q | | | V
|
15+ 5 0.1023 0.20 Q | | | V
|
15+10 0.1035 0.18 Q | | | V
|
15+15 0.1048 0.18 Q | | | V
|
15+20 0.1059 0.17 Q | | | V
|
15+25 0.1070 0.15 Q | | | V
|
15+30 0.1080 0.15 Q | | | V
|
15+35 0.1089 0.13 Q | | | V
|
15+40 0.1095 0.09 Q | | | V
|
15+45 0.1101 0.08 Q | | | V
|
15+50 0.1106 0.08 Q | | | V
|
15+55 0.1112 0.08 Q | | | V
|
16+ 0 0.1118 0.08 Q | | | V
|
16+ 5 0.1122 0.06 Q | | | V
|
16+10 0.1124 0.03 Q | | | V
|
16+15 0.1125 0.02 Q | | | V
|
16+20 0.1126 0.02 Q | | | V
|
16+25 0.1127 0.02 Q | | | V
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16+30 0.1129 0.02 Q | | | V
|
16+35 0.1130 0.02 Q | | | V
|
16+40 0.1131 0.01 Q | | | V
|
16+45 0.1132 0.01 Q | | | V
F.1.d
Packet Pg. 1259 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
16+50 0.1132 0.01 Q | | | V
|
16+55 0.1133 0.01 Q | | | V
|
17+ 0 0.1134 0.01 Q | | | V
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17+ 5 0.1135 0.02 Q | | | V
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17+10 0.1137 0.02 Q | | | V
|
17+15 0.1138 0.02 Q | | | V
|
17+20 0.1140 0.02 Q | | | V
|
17+25 0.1141 0.02 Q | | | V
|
17+30 0.1143 0.02 Q | | | V
|
17+35 0.1144 0.02 Q | | | V
|
17+40 0.1146 0.02 Q | | | V
|
17+45 0.1147 0.02 Q | | | V
|
17+50 0.1148 0.02 Q | | | V
|
17+55 0.1150 0.02 Q | | | V
|
18+ 0 0.1151 0.02 Q | | | V
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18+ 5 0.1152 0.02 Q | | | V
|
18+10 0.1153 0.02 Q | | | V
|
18+15 0.1154 0.02 Q | | | V
|
18+20 0.1156 0.02 Q | | | V
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18+25 0.1157 0.02 Q | | | V
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18+30 0.1158 0.02 Q | | | V
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18+35 0.1159 0.02 Q | | | V
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18+40 0.1160 0.01 Q | | | V
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18+45 0.1161 0.01 Q | | | V
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18+50 0.1162 0.01 Q | | | V
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18+55 0.1162 0.01 Q | | | V
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19+ 0 0.1163 0.01 Q | | | V
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19+ 5 0.1164 0.01 Q | | | V
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19+10 0.1164 0.01 Q | | | V
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19+15 0.1165 0.01 Q | | | V
F.1.d
Packet Pg. 1260 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
19+20 0.1166 0.01 Q | | | V
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19+25 0.1167 0.02 Q | | | V
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19+30 0.1169 0.02 Q | | | V
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19+35 0.1170 0.02 Q | | | V
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19+40 0.1171 0.01 Q | | | V
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19+45 0.1172 0.01 Q | | | V
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19+50 0.1172 0.01 Q | | | V
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19+55 0.1173 0.01 Q | | | V
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20+ 0 0.1174 0.01 Q | | | V
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20+ 5 0.1174 0.01 Q | | | V
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20+10 0.1175 0.01 Q | | | V
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20+15 0.1176 0.01 Q | | | V
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20+20 0.1177 0.01 Q | | | V
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20+25 0.1178 0.01 Q | | |
V|
20+30 0.1179 0.01 Q | | |
V|
20+35 0.1180 0.01 Q | | |
V|
20+40 0.1180 0.01 Q | | |
V|
20+45 0.1181 0.01 Q | | |
V|
20+50 0.1182 0.01 Q | | |
V|
20+55 0.1183 0.01 Q | | |
V|
21+ 0 0.1183 0.01 Q | | |
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21+ 5 0.1184 0.01 Q | | |
V|
21+10 0.1185 0.01 Q | | |
V|
21+15 0.1186 0.01 Q | | |
V|
21+20 0.1187 0.01 Q | | |
V|
21+25 0.1187 0.01 Q | | |
V|
21+30 0.1188 0.01 Q | | |
V|
21+35 0.1188 0.01 Q | | |
V|
21+40 0.1189 0.01 Q | | |
V|
21+45 0.1190 0.01 Q | | |
F.1.d
Packet Pg. 1261 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
21+50 0.1191 0.01 Q | | |
V|
21+55 0.1192 0.01 Q | | |
V|
22+ 0 0.1192 0.01 Q | | |
V|
22+ 5 0.1193 0.01 Q | | |
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22+10 0.1194 0.01 Q | | |
V|
22+15 0.1195 0.01 Q | | |
V|
22+20 0.1195 0.01 Q | | |
V|
22+25 0.1196 0.01 Q | | |
V|
22+30 0.1197 0.01 Q | | |
V|
22+35 0.1197 0.01 Q | | |
V|
22+40 0.1198 0.01 Q | | |
V|
22+45 0.1198 0.01 Q | | |
V|
22+50 0.1199 0.01 Q | | |
V|
22+55 0.1200 0.01 Q | | |
V|
23+ 0 0.1200 0.01 Q | | |
V|
23+ 5 0.1201 0.01 Q | | |
V|
23+10 0.1201 0.01 Q | | |
V|
23+15 0.1202 0.01 Q | | |
V|
23+20 0.1203 0.01 Q | | |
V|
23+25 0.1203 0.01 Q | | |
V|
23+30 0.1204 0.01 Q | | |
V|
23+35 0.1204 0.01 Q | | |
V|
23+40 0.1205 0.01 Q | | |
V|
23+45 0.1206 0.01 Q | | |
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23+50 0.1206 0.01 Q | | |
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23+55 0.1207 0.01 Q | | |
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24+ 0 0.1207 0.01 Q | | |
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24+ 5 0.1208 0.01 Q | | |
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24+10 0.1208 0.00 Q | | |
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24+15 0.1208 0.00 Q | | |
F.1.d
Packet Pg. 1262 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
24+20 0.1208 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1263 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea245.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 24 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1264 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 1.93 10.67
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 4.64 25.66
STORM EVENT (YEAR) = 5.00
Area Averaged 2-Year Rainfall = 1.930(In)
Area Averaged 100-Year Rainfall = 4.640(In)
Point rain (area averaged) = 2.565(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 2.565(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

0.198
Area averaged mean soil loss (F) (In/Hr) = 0.198
Minimum soil loss rate ((In/Hr)) = 0.099
(for 24 hour storm duration)
Soil low loss rate (decimal) = 0.900
------------------------------------------------------------------ ---
U n i t H y d r o g r a p h
FOOTHILL S-Curve
------------------------------------------------------------------ --
Unit Hydrograph Data
------------------------------------------------------------------ ---
Unit time period Time % of lag Distribution Unit Hydrograph (hrs) Graph % (CFS)
------------------------------------------------------------------ ---
1 0.083 157.948 32.675 1.821
2 0.167 315.896 53.715 2.994
3 0.250 473.844 10.920 0.609
4 0.333 631.792 2.028 0.113
5 0.417 789.740 0.662 0.037
Sum = 100.000 Sum= 5.573
----------------------------------------------------------------------- The following loss rate calculations reflect use of the minimum calculated loss
rate subtracted from the Storm Rain to produce the maximum Effective Rain value
F.1.d
Packet Pg. 1265 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Unit Time Pattern Storm Rain Loss rate(In./Hr) Effective (Hr.) Percent (In/Hr) Max | Low (In/Hr)
1 0.08 0.07 0.021 ( 0.352) 0.018 0.002
2 0.17 0.07 0.021 ( 0.350) 0.018 0.002
3 0.25 0.07 0.021 ( 0.349) 0.018 0.002
4 0.33 0.10 0.031 ( 0.348) 0.028 0.003
5 0.42 0.10 0.031 ( 0.346) 0.028 0.003
6 0.50 0.10 0.031 ( 0.345) 0.028 0.003
7 0.58 0.10 0.031 ( 0.344) 0.028 0.003
8 0.67 0.10 0.031 ( 0.342) 0.028 0.003
9 0.75 0.10 0.031 ( 0.341) 0.028 0.003
10 0.83 0.13 0.041 ( 0.340) 0.037 0.004
11 0.92 0.13 0.041 ( 0.338) 0.037 0.004
12 1.00 0.13 0.041 ( 0.337) 0.037 0.004
13 1.08 0.10 0.031 ( 0.336) 0.028 0.003
14 1.17 0.10 0.031 ( 0.334) 0.028 0.003
15 1.25 0.10 0.031 ( 0.333) 0.028 0.003
16 1.33 0.10 0.031 ( 0.332) 0.028 0.003
17 1.42 0.10 0.031 ( 0.330) 0.028 0.003
18 1.50 0.10 0.031 ( 0.329) 0.028 0.003
19 1.58 0.10 0.031 ( 0.328) 0.028 0.003
20 1.67 0.10 0.031 ( 0.326) 0.028 0.003
21 1.75 0.10 0.031 ( 0.325) 0.028 0.003
22 1.83 0.13 0.041 ( 0.324) 0.037 0.004
23 1.92 0.13 0.041 ( 0.322) 0.037 0.004
24 2.00 0.13 0.041 ( 0.321) 0.037 0.004
25 2.08 0.13 0.041 ( 0.320) 0.037 0.004
26 2.17 0.13 0.041 ( 0.318) 0.037 0.004
27 2.25 0.13 0.041 ( 0.317) 0.037 0.004
28 2.33 0.13 0.041 ( 0.316) 0.037 0.004
29 2.42 0.13 0.041 ( 0.315) 0.037 0.004
30 2.50 0.13 0.041 ( 0.313) 0.037 0.004
31 2.58 0.17 0.051 ( 0.312) 0.046 0.005
32 2.67 0.17 0.051 ( 0.311) 0.046 0.005
33 2.75 0.17 0.051 ( 0.310) 0.046 0.005
34 2.83 0.17 0.051 ( 0.308) 0.046 0.005
35 2.92 0.17 0.051 ( 0.307) 0.046 0.005
36 3.00 0.17 0.051 ( 0.306) 0.046 0.005
37 3.08 0.17 0.051 ( 0.304) 0.046 0.005
38 3.17 0.17 0.051 ( 0.303) 0.046 0.005
39 3.25 0.17 0.051 ( 0.302) 0.046 0.005
40 3.33 0.17 0.051 ( 0.301) 0.046 0.005
41 3.42 0.17 0.051 ( 0.299) 0.046 0.005
42 3.50 0.17 0.051 ( 0.298) 0.046 0.005
43 3.58 0.17 0.051 ( 0.297) 0.046 0.005
44 3.67 0.17 0.051 ( 0.296) 0.046 0.005
45 3.75 0.17 0.051 ( 0.294) 0.046 0.005
46 3.83 0.20 0.062 ( 0.293) 0.055 0.006
47 3.92 0.20 0.062 ( 0.292) 0.055 0.006
48 4.00 0.20 0.062 ( 0.291) 0.055 0.006
49 4.08 0.20 0.062 ( 0.289) 0.055 0.006
50 4.17 0.20 0.062 ( 0.288) 0.055 0.006
51 4.25 0.20 0.062 ( 0.287) 0.055 0.006
52 4.33 0.23 0.072 ( 0.286) 0.065 0.007
53 4.42 0.23 0.072 ( 0.285) 0.065 0.007
54 4.50 0.23 0.072 ( 0.283) 0.065 0.007
55 4.58 0.23 0.072 ( 0.282) 0.065 0.007
56 4.67 0.23 0.072 ( 0.281) 0.065 0.007
57 4.75 0.23 0.072 ( 0.280) 0.065 0.007
F.1.d
Packet Pg. 1266 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 58 4.83 0.27 0.082 ( 0.278) 0.074 0.008
59 4.92 0.27 0.082 ( 0.277) 0.074 0.008
60 5.00 0.27 0.082 ( 0.276) 0.074 0.008
61 5.08 0.20 0.062 ( 0.275) 0.055 0.006
62 5.17 0.20 0.062 ( 0.274) 0.055 0.006
63 5.25 0.20 0.062 ( 0.272) 0.055 0.006
64 5.33 0.23 0.072 ( 0.271) 0.065 0.007
65 5.42 0.23 0.072 ( 0.270) 0.065 0.007
66 5.50 0.23 0.072 ( 0.269) 0.065 0.007
67 5.58 0.27 0.082 ( 0.268) 0.074 0.008
68 5.67 0.27 0.082 ( 0.267) 0.074 0.008
69 5.75 0.27 0.082 ( 0.265) 0.074 0.008
70 5.83 0.27 0.082 ( 0.264) 0.074 0.008
71 5.92 0.27 0.082 ( 0.263) 0.074 0.008
72 6.00 0.27 0.082 ( 0.262) 0.074 0.008
73 6.08 0.30 0.092 ( 0.261) 0.083 0.009
74 6.17 0.30 0.092 ( 0.260) 0.083 0.009
75 6.25 0.30 0.092 ( 0.258) 0.083 0.009
76 6.33 0.30 0.092 ( 0.257) 0.083 0.009
77 6.42 0.30 0.092 ( 0.256) 0.083 0.009
78 6.50 0.30 0.092 ( 0.255) 0.083 0.009
79 6.58 0.33 0.103 ( 0.254) 0.092 0.010
80 6.67 0.33 0.103 ( 0.253) 0.092 0.010
81 6.75 0.33 0.103 ( 0.252) 0.092 0.010
82 6.83 0.33 0.103 ( 0.250) 0.092 0.010
83 6.92 0.33 0.103 ( 0.249) 0.092 0.010
84 7.00 0.33 0.103 ( 0.248) 0.092 0.010
85 7.08 0.33 0.103 ( 0.247) 0.092 0.010
86 7.17 0.33 0.103 ( 0.246) 0.092 0.010
87 7.25 0.33 0.103 ( 0.245) 0.092 0.010
88 7.33 0.37 0.113 ( 0.244) 0.102 0.011
89 7.42 0.37 0.113 ( 0.243) 0.102 0.011
90 7.50 0.37 0.113 ( 0.241) 0.102 0.011
91 7.58 0.40 0.123 ( 0.240) 0.111 0.012
92 7.67 0.40 0.123 ( 0.239) 0.111 0.012
93 7.75 0.40 0.123 ( 0.238) 0.111 0.012
94 7.83 0.43 0.133 ( 0.237) 0.120 0.013
95 7.92 0.43 0.133 ( 0.236) 0.120 0.013
96 8.00 0.43 0.133 ( 0.235) 0.120 0.013
97 8.08 0.50 0.154 ( 0.234) 0.138 0.015
98 8.17 0.50 0.154 ( 0.233) 0.138 0.015
99 8.25 0.50 0.154 ( 0.232) 0.138 0.015
100 8.33 0.50 0.154 ( 0.230) 0.138 0.015
101 8.42 0.50 0.154 ( 0.229) 0.138 0.015
102 8.50 0.50 0.154 ( 0.228) 0.138 0.015
103 8.58 0.53 0.164 ( 0.227) 0.148 0.016
104 8.67 0.53 0.164 ( 0.226) 0.148 0.016
105 8.75 0.53 0.164 ( 0.225) 0.148 0.016
106 8.83 0.57 0.174 ( 0.224) 0.157 0.017
107 8.92 0.57 0.174 ( 0.223) 0.157 0.017
108 9.00 0.57 0.174 ( 0.222) 0.157 0.017
109 9.08 0.63 0.195 ( 0.221) 0.175 0.019
110 9.17 0.63 0.195 ( 0.220) 0.175 0.019
111 9.25 0.63 0.195 ( 0.219) 0.175 0.019
112 9.33 0.67 0.205 ( 0.218) 0.185 0.021
113 9.42 0.67 0.205 ( 0.217) 0.185 0.021
114 9.50 0.67 0.205 ( 0.216) 0.185 0.021
115 9.58 0.70 0.215 ( 0.215) 0.194 0.022
116 9.67 0.70 0.215 ( 0.214) 0.194 0.022
117 9.75 0.70 0.215 ( 0.213) 0.194 0.022
F.1.d
Packet Pg. 1267 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 118 9.83 0.73 0.226 ( 0.212) 0.203 0.023
119 9.92 0.73 0.226 ( 0.211) 0.203 0.023
120 10.00 0.73 0.226 ( 0.210) 0.203 0.023
121 10.08 0.50 0.154 ( 0.208) 0.138 0.015
122 10.17 0.50 0.154 ( 0.207) 0.138 0.015
123 10.25 0.50 0.154 ( 0.206) 0.138 0.015
124 10.33 0.50 0.154 ( 0.205) 0.138 0.015
125 10.42 0.50 0.154 ( 0.204) 0.138 0.015
126 10.50 0.50 0.154 ( 0.203) 0.138 0.015
127 10.58 0.67 0.205 ( 0.202) 0.185 0.021
128 10.67 0.67 0.205 ( 0.201) 0.185 0.021
129 10.75 0.67 0.205 ( 0.201) 0.185 0.021
130 10.83 0.67 0.205 ( 0.200) 0.185 0.021
131 10.92 0.67 0.205 ( 0.199) 0.185 0.021
132 11.00 0.67 0.205 ( 0.198) 0.185 0.021
133 11.08 0.63 0.195 ( 0.197) 0.175 0.019
134 11.17 0.63 0.195 ( 0.196) 0.175 0.019
135 11.25 0.63 0.195 ( 0.195) 0.175 0.019
136 11.33 0.63 0.195 ( 0.194) 0.175 0.019
137 11.42 0.63 0.195 ( 0.193) 0.175 0.019
138 11.50 0.63 0.195 ( 0.192) 0.175 0.019
139 11.58 0.57 0.174 ( 0.191) 0.157 0.017
140 11.67 0.57 0.174 ( 0.190) 0.157 0.017
141 11.75 0.57 0.174 ( 0.189) 0.157 0.017
142 11.83 0.60 0.185 ( 0.188) 0.166 0.018
143 11.92 0.60 0.185 ( 0.187) 0.166 0.018
144 12.00 0.60 0.185 ( 0.186) 0.166 0.018
145 12.08 0.83 0.256 0.185 ( 0.231) 0.071
146 12.17 0.83 0.256 0.184 ( 0.231) 0.072
147 12.25 0.83 0.256 0.183 ( 0.231) 0.073
148 12.33 0.87 0.267 0.182 ( 0.240) 0.084
149 12.42 0.87 0.267 0.182 ( 0.240) 0.085
150 12.50 0.87 0.267 0.181 ( 0.240) 0.086
151 12.58 0.93 0.287 0.180 ( 0.259) 0.108
152 12.67 0.93 0.287 0.179 ( 0.259) 0.108
153 12.75 0.93 0.287 0.178 ( 0.259) 0.109
154 12.83 0.97 0.298 0.177 ( 0.268) 0.121
155 12.92 0.97 0.298 0.176 ( 0.268) 0.121
156 13.00 0.97 0.298 0.175 ( 0.268) 0.122
157 13.08 1.13 0.349 0.174 ( 0.314) 0.174
158 13.17 1.13 0.349 0.173 ( 0.314) 0.175
159 13.25 1.13 0.349 0.173 ( 0.314) 0.176
160 13.33 1.13 0.349 0.172 ( 0.314) 0.177
161 13.42 1.13 0.349 0.171 ( 0.314) 0.178
162 13.50 1.13 0.349 0.170 ( 0.314) 0.179
163 13.58 0.77 0.236 0.169 ( 0.212) 0.067
164 13.67 0.77 0.236 0.168 ( 0.212) 0.068
165 13.75 0.77 0.236 0.167 ( 0.212) 0.069
166 13.83 0.77 0.236 0.166 ( 0.212) 0.069
167 13.92 0.77 0.236 0.166 ( 0.212) 0.070
168 14.00 0.77 0.236 0.165 ( 0.212) 0.071
169 14.08 0.90 0.277 0.164 ( 0.249) 0.113
170 14.17 0.90 0.277 0.163 ( 0.249) 0.114
171 14.25 0.90 0.277 0.162 ( 0.249) 0.115
172 14.33 0.87 0.267 0.161 ( 0.240) 0.105
173 14.42 0.87 0.267 0.161 ( 0.240) 0.106
174 14.50 0.87 0.267 0.160 ( 0.240) 0.107
175 14.58 0.87 0.267 0.159 ( 0.240) 0.108
176 14.67 0.87 0.267 0.158 ( 0.240) 0.109
177 14.75 0.87 0.267 0.157 ( 0.240) 0.109
F.1.d
Packet Pg. 1268 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 178 14.83 0.83 0.256 0.157 ( 0.231) 0.100
179 14.92 0.83 0.256 0.156 ( 0.231) 0.101
180 15.00 0.83 0.256 0.155 ( 0.231) 0.102
181 15.08 0.80 0.246 0.154 ( 0.222) 0.092
182 15.17 0.80 0.246 0.153 ( 0.222) 0.093
183 15.25 0.80 0.246 0.153 ( 0.222) 0.094
184 15.33 0.77 0.236 0.152 ( 0.212) 0.084
185 15.42 0.77 0.236 0.151 ( 0.212) 0.085
186 15.50 0.77 0.236 0.150 ( 0.212) 0.086
187 15.58 0.63 0.195 0.149 ( 0.175) 0.045
188 15.67 0.63 0.195 0.149 ( 0.175) 0.046
189 15.75 0.63 0.195 0.148 ( 0.175) 0.047
190 15.83 0.63 0.195 0.147 ( 0.175) 0.048
191 15.92 0.63 0.195 0.146 ( 0.175) 0.048
192 16.00 0.63 0.195 0.146 ( 0.175) 0.049
193 16.08 0.13 0.041 ( 0.145) 0.037 0.004
194 16.17 0.13 0.041 ( 0.144) 0.037 0.004
195 16.25 0.13 0.041 ( 0.143) 0.037 0.004
196 16.33 0.13 0.041 ( 0.143) 0.037 0.004
197 16.42 0.13 0.041 ( 0.142) 0.037 0.004
198 16.50 0.13 0.041 ( 0.141) 0.037 0.004
199 16.58 0.10 0.031 ( 0.141) 0.028 0.003
200 16.67 0.10 0.031 ( 0.140) 0.028 0.003
201 16.75 0.10 0.031 ( 0.139) 0.028 0.003
202 16.83 0.10 0.031 ( 0.138) 0.028 0.003
203 16.92 0.10 0.031 ( 0.138) 0.028 0.003
204 17.00 0.10 0.031 ( 0.137) 0.028 0.003
205 17.08 0.17 0.051 ( 0.136) 0.046 0.005
206 17.17 0.17 0.051 ( 0.136) 0.046 0.005
207 17.25 0.17 0.051 ( 0.135) 0.046 0.005
208 17.33 0.17 0.051 ( 0.134) 0.046 0.005
209 17.42 0.17 0.051 ( 0.134) 0.046 0.005
210 17.50 0.17 0.051 ( 0.133) 0.046 0.005
211 17.58 0.17 0.051 ( 0.132) 0.046 0.005
212 17.67 0.17 0.051 ( 0.132) 0.046 0.005
213 17.75 0.17 0.051 ( 0.131) 0.046 0.005
214 17.83 0.13 0.041 ( 0.130) 0.037 0.004
215 17.92 0.13 0.041 ( 0.130) 0.037 0.004
216 18.00 0.13 0.041 ( 0.129) 0.037 0.004
217 18.08 0.13 0.041 ( 0.128) 0.037 0.004
218 18.17 0.13 0.041 ( 0.128) 0.037 0.004
219 18.25 0.13 0.041 ( 0.127) 0.037 0.004
220 18.33 0.13 0.041 ( 0.127) 0.037 0.004
221 18.42 0.13 0.041 ( 0.126) 0.037 0.004
222 18.50 0.13 0.041 ( 0.125) 0.037 0.004
223 18.58 0.10 0.031 ( 0.125) 0.028 0.003
224 18.67 0.10 0.031 ( 0.124) 0.028 0.003
225 18.75 0.10 0.031 ( 0.124) 0.028 0.003
226 18.83 0.07 0.021 ( 0.123) 0.018 0.002
227 18.92 0.07 0.021 ( 0.122) 0.018 0.002
228 19.00 0.07 0.021 ( 0.122) 0.018 0.002
229 19.08 0.10 0.031 ( 0.121) 0.028 0.003
230 19.17 0.10 0.031 ( 0.121) 0.028 0.003
231 19.25 0.10 0.031 ( 0.120) 0.028 0.003
232 19.33 0.13 0.041 ( 0.119) 0.037 0.004
233 19.42 0.13 0.041 ( 0.119) 0.037 0.004
234 19.50 0.13 0.041 ( 0.118) 0.037 0.004
235 19.58 0.10 0.031 ( 0.118) 0.028 0.003
236 19.67 0.10 0.031 ( 0.117) 0.028 0.003
237 19.75 0.10 0.031 ( 0.117) 0.028 0.003
F.1.d
Packet Pg. 1269 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 238 19.83 0.07 0.021 ( 0.116) 0.018 0.002
239 19.92 0.07 0.021 ( 0.116) 0.018 0.002
240 20.00 0.07 0.021 ( 0.115) 0.018 0.002
241 20.08 0.10 0.031 ( 0.115) 0.028 0.003
242 20.17 0.10 0.031 ( 0.114) 0.028 0.003
243 20.25 0.10 0.031 ( 0.114) 0.028 0.003
244 20.33 0.10 0.031 ( 0.113) 0.028 0.003
245 20.42 0.10 0.031 ( 0.113) 0.028 0.003
246 20.50 0.10 0.031 ( 0.112) 0.028 0.003
247 20.58 0.10 0.031 ( 0.112) 0.028 0.003
248 20.67 0.10 0.031 ( 0.111) 0.028 0.003
249 20.75 0.10 0.031 ( 0.111) 0.028 0.003
250 20.83 0.07 0.021 ( 0.110) 0.018 0.002
251 20.92 0.07 0.021 ( 0.110) 0.018 0.002
252 21.00 0.07 0.021 ( 0.110) 0.018 0.002
253 21.08 0.10 0.031 ( 0.109) 0.028 0.003
254 21.17 0.10 0.031 ( 0.109) 0.028 0.003
255 21.25 0.10 0.031 ( 0.108) 0.028 0.003
256 21.33 0.07 0.021 ( 0.108) 0.018 0.002
257 21.42 0.07 0.021 ( 0.107) 0.018 0.002
258 21.50 0.07 0.021 ( 0.107) 0.018 0.002
259 21.58 0.10 0.031 ( 0.107) 0.028 0.003
260 21.67 0.10 0.031 ( 0.106) 0.028 0.003
261 21.75 0.10 0.031 ( 0.106) 0.028 0.003
262 21.83 0.07 0.021 ( 0.105) 0.018 0.002
263 21.92 0.07 0.021 ( 0.105) 0.018 0.002
264 22.00 0.07 0.021 ( 0.105) 0.018 0.002
265 22.08 0.10 0.031 ( 0.104) 0.028 0.003
266 22.17 0.10 0.031 ( 0.104) 0.028 0.003
267 22.25 0.10 0.031 ( 0.104) 0.028 0.003
268 22.33 0.07 0.021 ( 0.103) 0.018 0.002
269 22.42 0.07 0.021 ( 0.103) 0.018 0.002
270 22.50 0.07 0.021 ( 0.103) 0.018 0.002
271 22.58 0.07 0.021 ( 0.102) 0.018 0.002
272 22.67 0.07 0.021 ( 0.102) 0.018 0.002
273 22.75 0.07 0.021 ( 0.102) 0.018 0.002
274 22.83 0.07 0.021 ( 0.102) 0.018 0.002
275 22.92 0.07 0.021 ( 0.101) 0.018 0.002
276 23.00 0.07 0.021 ( 0.101) 0.018 0.002
277 23.08 0.07 0.021 ( 0.101) 0.018 0.002
278 23.17 0.07 0.021 ( 0.101) 0.018 0.002
279 23.25 0.07 0.021 ( 0.100) 0.018 0.002
280 23.33 0.07 0.021 ( 0.100) 0.018 0.002
281 23.42 0.07 0.021 ( 0.100) 0.018 0.002
282 23.50 0.07 0.021 ( 0.100) 0.018 0.002
283 23.58 0.07 0.021 ( 0.100) 0.018 0.002
284 23.67 0.07 0.021 ( 0.100) 0.018 0.002
285 23.75 0.07 0.021 ( 0.099) 0.018 0.002
286 23.83 0.07 0.021 ( 0.099) 0.018 0.002
287 23.92 0.07 0.021 ( 0.099) 0.018 0.002
288 24.00 0.07 0.021 ( 0.099) 0.018 0.002
(Loss Rate Not Used)
Sum = 100.0 Sum = 6.6
Flood volume = Effective rainfall 0.55(In)
times area 5.5(Ac.)/[(In)/(Ft.)] = 0.3(Ac.Ft)
Total soil loss = 2.02(In)
Total soil loss = 0.930(Ac.Ft)
Total rainfall = 2.56(In)
Flood volume = 10963.5 Cubic Feet
Total soil loss = 40520.4 Cubic Feet
F.1.d
Packet Pg. 1270 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) ------------------------------------------------------------------ --
Peak flow rate of this hydrograph = 0.993(CFS)
------------------------------------------------------------------ --
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++
24 - H O U R S T O R M
R u n o f f H y d r o g r a p h
------------------------------------------------------------------ --
Hydrograph in 5 Minute intervals ((CFS))
------------------------------------------------------------------ --
Time(h+m) Volume Ac.Ft Q(CFS) 0 2.5 5.0 7.5

10.0 ----------------------------------------------------------------------- 0+ 5 0.0000 0.00 Q | | |
|
0+10 0.0001 0.01 Q | | |
|
0+15 0.0002 0.01 Q | | |
|
0+20 0.0003 0.01 Q | | |
|
0+25 0.0004 0.02 Q | | |
|
0+30 0.0005 0.02 Q | | |
|
0+35 0.0006 0.02 Q | | |
|
0+40 0.0007 0.02 Q | | |
|
0+45 0.0008 0.02 Q | | |
|
0+50 0.0010 0.02 Q | | |
|
0+55 0.0011 0.02 Q | | |
|
1+ 0 0.0013 0.02 Q | | |
|
1+ 5 0.0014 0.02 Q | | |
|
1+10 0.0016 0.02 Q | | |
|
1+15 0.0017 0.02 Q | | |
|
1+20 0.0018 0.02 Q | | |
|
1+25 0.0019 0.02 Q | | |
|
1+30 0.0020 0.02 Q | | |
|
1+35 0.0021 0.02 Q | | |
|
1+40 0.0023 0.02 Q | | |
|
1+45 0.0024 0.02 Q | | |
F.1.d
Packet Pg. 1271 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
1+50 0.0025 0.02 Q | | |
|
1+55 0.0027 0.02 Q | | |
|
2+ 0 0.0028 0.02 Q | | |
|
2+ 5 0.0030 0.02 Q | | |
|
2+10 0.0031 0.02 Q | | |
|
2+15 0.0033 0.02 Q | | |
|
2+20 0.0035 0.02 Q | | |
|
2+25 0.0036 0.02 Q | | |
|
2+30 0.0038 0.02 Q | | |
|
2+35 0.0039 0.02 Q | | |
|
2+40 0.0041 0.03 Q | | |
|
2+45 0.0043 0.03 Q | | |
|
2+50 0.0045 0.03 Q | | |
|
2+55 0.0047 0.03 Q | | |
|
3+ 0 0.0049 0.03 Q | | |
|
3+ 5 0.0051 0.03 Q | | |
|
3+10 0.0053 0.03 Q | | |
|
3+15 0.0055 0.03 Q | | |
|
3+20 0.0057 0.03 Q | | |
|
3+25 0.0059 0.03 Q | | |
|
3+30 0.0061 0.03 Q | | |
|
3+35 0.0063 0.03 QV | | |
|
3+40 0.0065 0.03 QV | | |
|
3+45 0.0067 0.03 QV | | |
|
3+50 0.0069 0.03 QV | | |
|
3+55 0.0071 0.03 QV | | |
|
4+ 0 0.0074 0.03 QV | | |
|
4+ 5 0.0076 0.03 QV | | |
|
4+10 0.0078 0.03 QV | | |
|
4+15 0.0081 0.03 QV | | |
F.1.d
Packet Pg. 1272 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
4+20 0.0083 0.04 QV | | |
|
4+25 0.0086 0.04 QV | | |
|
4+30 0.0089 0.04 QV | | |
|
4+35 0.0091 0.04 QV | | |
|
4+40 0.0094 0.04 QV | | |
|
4+45 0.0097 0.04 QV | | |
|
4+50 0.0100 0.04 QV | | |
|
4+55 0.0103 0.04 QV | | |
|
5+ 0 0.0106 0.05 QV | | |
|
5+ 5 0.0109 0.04 QV | | |
|
5+10 0.0111 0.04 QV | | |
|
5+15 0.0114 0.03 QV | | |
|
5+20 0.0116 0.04 QV | | |
|
5+25 0.0119 0.04 QV | | |
|
5+30 0.0122 0.04 QV | | |
|
5+35 0.0125 0.04 QV | | |
|
5+40 0.0128 0.04 Q V | | |
|
5+45 0.0131 0.05 Q V | | |
|
5+50 0.0134 0.05 Q V | | |
|
5+55 0.0137 0.05 Q V | | |
|
6+ 0 0.0140 0.05 Q V | | |
|
6+ 5 0.0144 0.05 Q V | | |
|
6+10 0.0147 0.05 Q V | | |
|
6+15 0.0151 0.05 Q V | | |
|
6+20 0.0154 0.05 Q V | | |
|
6+25 0.0158 0.05 Q V | | |
|
6+30 0.0161 0.05 Q V | | |
|
6+35 0.0165 0.05 Q V | | |
|
6+40 0.0169 0.06 Q V | | |
|
6+45 0.0173 0.06 Q V | | |
F.1.d
Packet Pg. 1273 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
6+50 0.0177 0.06 Q V | | |
|
6+55 0.0181 0.06 Q V | | |
|
7+ 0 0.0185 0.06 Q V | | |
|
7+ 5 0.0189 0.06 Q V | | |
|
7+10 0.0192 0.06 Q V | | |
|
7+15 0.0196 0.06 Q V | | |
|
7+20 0.0200 0.06 Q V | | |
|
7+25 0.0205 0.06 Q V | | |
|
7+30 0.0209 0.06 Q V | | |
|
7+35 0.0214 0.06 Q V | | |
|
7+40 0.0218 0.07 Q V | | |
|
7+45 0.0223 0.07 Q V | | |
|
7+50 0.0228 0.07 Q V | | |
|
7+55 0.0233 0.07 Q V | | |
|
8+ 0 0.0238 0.07 Q V | | |
|
8+ 5 0.0243 0.08 Q V | | |
|
8+10 0.0249 0.08 Q V | | |
|
8+15 0.0255 0.09 Q V | | |
|
8+20 0.0261 0.09 Q V | | |
|
8+25 0.0267 0.09 Q V | | |
|
8+30 0.0273 0.09 Q V | | |
|
8+35 0.0279 0.09 Q V | | |
|
8+40 0.0285 0.09 Q V | | |
|
8+45 0.0291 0.09 Q V | | |
|
8+50 0.0298 0.09 Q V | | |
|
8+55 0.0304 0.10 Q V | | |
|
9+ 0 0.0311 0.10 Q V | | |
|
9+ 5 0.0318 0.10 Q V | | |
|
9+10 0.0325 0.11 Q V | | |
|
9+15 0.0333 0.11 Q V | | |
F.1.d
Packet Pg. 1274 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
9+20 0.0341 0.11 Q V | | |
|
9+25 0.0348 0.11 Q V | | |
|
9+30 0.0356 0.11 Q V | | |
|
9+35 0.0364 0.12 Q V | | |
|
9+40 0.0372 0.12 Q V | | |
|
9+45 0.0381 0.12 Q V | | |
|
9+50 0.0389 0.12 Q V | | |
|
9+55 0.0398 0.13 Q V | | |
|
10+ 0 0.0406 0.13 Q V | | |
|
10+ 5 0.0414 0.11 Q V | | |
|
10+10 0.0420 0.09 Q V | | |
|
10+15 0.0426 0.09 Q V | | |
|
10+20 0.0432 0.09 Q V | | |
|
10+25 0.0438 0.09 Q V | | |
|
10+30 0.0444 0.09 Q V | | |
|
10+35 0.0451 0.10 Q V | | |
|
10+40 0.0458 0.11 Q V | | |
|
10+45 0.0466 0.11 Q V | | |
|
10+50 0.0474 0.11 Q V | | |
|
10+55 0.0482 0.11 Q V | | |
|
11+ 0 0.0490 0.11 Q V | | |
|
11+ 5 0.0498 0.11 Q V | | |
|
11+10 0.0505 0.11 Q V | | |
|
11+15 0.0513 0.11 Q V | | |
|
11+20 0.0520 0.11 Q V | | |
|
11+25 0.0528 0.11 Q V | | |
|
11+30 0.0535 0.11 Q V | | |
|
11+35 0.0542 0.10 Q V | | |
|
11+40 0.0549 0.10 Q V | | |
|
11+45 0.0556 0.10 Q V | | |
F.1.d
Packet Pg. 1275 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
11+50 0.0563 0.10 Q V | | |
|
11+55 0.0570 0.10 Q V| | |
|
12+ 0 0.0577 0.10 Q V| | |
|
12+ 5 0.0590 0.20 Q V| | |
|
12+10 0.0615 0.36 |Q V| | |
|
12+15 0.0642 0.40 |Q V | |
|
12+20 0.0672 0.43 |Q V | |
|
12+25 0.0704 0.46 |Q |V | |
|
12+30 0.0736 0.47 |Q |V | |
|
12+35 0.0772 0.52 | Q | V | |
|
12+40 0.0812 0.58 | Q | V | |
|
12+45 0.0854 0.60 | Q | V | |
|
12+50 0.0897 0.63 | Q | V | |
|
12+55 0.0943 0.67 | Q | V | |
|
13+ 0 0.0989 0.68 | Q | V | |
|
13+ 5 0.1043 0.78 | Q | V | |
|
13+10 0.1107 0.93 | Q | V | |
|
13+15 0.1174 0.97 | Q | V | |
|
13+20 0.1242 0.98 | Q | V| |
|
13+25 0.1310 0.99 | Q | V |
|
13+30 0.1378 0.99 | Q | |V |
|
13+35 0.1433 0.79 | Q | | V |
|
13+40 0.1464 0.46 |Q | | V |
|
13+45 0.1492 0.40 |Q | | V |
|
13+50 0.1518 0.39 |Q | | V |
|
13+55 0.1545 0.39 |Q | | V |
|
14+ 0 0.1572 0.39 |Q | | V |
|
14+ 5 0.1605 0.47 |Q | | V |
|
14+10 0.1646 0.60 | Q | | V |
|
14+15 0.1689 0.63 | Q | | V |
F.1.d
Packet Pg. 1276 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
14+20 0.1732 0.62 | Q | | V |
|
14+25 0.1773 0.60 | Q | | V |
|
14+30 0.1814 0.59 | Q | | V |
|
14+35 0.1855 0.60 | Q | | V|
|
14+40 0.1896 0.60 | Q | | V
|
14+45 0.1938 0.61 | Q | | V
|
14+50 0.1979 0.59 | Q | | |V
|
14+55 0.2018 0.57 | Q | | | V
|
15+ 0 0.2057 0.56 | Q | | | V
|
15+ 5 0.2094 0.55 | Q | | | V
|
15+10 0.2130 0.52 | Q | | | V
|
15+15 0.2166 0.52 | Q | | | V
|
15+20 0.2201 0.50 | Q | | | V
|
15+25 0.2234 0.48 |Q | | | V
|
15+30 0.2267 0.48 |Q | | | V
|
15+35 0.2294 0.40 |Q | | | V
|
15+40 0.2314 0.29 |Q | | | V
|
15+45 0.2332 0.26 |Q | | | V
|
15+50 0.2351 0.26 |Q | | | V
|
15+55 0.2369 0.27 |Q | | | V
|
16+ 0 0.2388 0.27 |Q | | | V
|
16+ 5 0.2401 0.19 Q | | | V
|
16+10 0.2405 0.06 Q | | | V
|
16+15 0.2407 0.03 Q | | | V
|
16+20 0.2408 0.02 Q | | | V
|
16+25 0.2410 0.02 Q | | | V
|
16+30 0.2412 0.02 Q | | | V
|
16+35 0.2413 0.02 Q | | | V
|
16+40 0.2414 0.02 Q | | | V
|
16+45 0.2415 0.02 Q | | | V
F.1.d
Packet Pg. 1277 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
16+50 0.2417 0.02 Q | | | V
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16+55 0.2418 0.02 Q | | | V
|
17+ 0 0.2419 0.02 Q | | | V
|
17+ 5 0.2420 0.02 Q | | | V
|
17+10 0.2422 0.03 Q | | | V
|
17+15 0.2424 0.03 Q | | | V
|
17+20 0.2426 0.03 Q | | | V
|
17+25 0.2428 0.03 Q | | | V
|
17+30 0.2430 0.03 Q | | | V
|
17+35 0.2432 0.03 Q | | | V
|
17+40 0.2434 0.03 Q | | | V
|
17+45 0.2436 0.03 Q | | | V
|
17+50 0.2438 0.03 Q | | | V
|
17+55 0.2439 0.02 Q | | | V
|
18+ 0 0.2441 0.02 Q | | | V
|
18+ 5 0.2443 0.02 Q | | | V
|
18+10 0.2444 0.02 Q | | | V
|
18+15 0.2446 0.02 Q | | | V
|
18+20 0.2447 0.02 Q | | | V
|
18+25 0.2449 0.02 Q | | | V
|
18+30 0.2451 0.02 Q | | | V
|
18+35 0.2452 0.02 Q | | | V
|
18+40 0.2453 0.02 Q | | | V
|
18+45 0.2454 0.02 Q | | |
V|
18+50 0.2455 0.02 Q | | |
V|
18+55 0.2456 0.01 Q | | |
V|
19+ 0 0.2457 0.01 Q | | |
V|
19+ 5 0.2458 0.01 Q | | |
V|
19+10 0.2459 0.02 Q | | |
V|
19+15 0.2460 0.02 Q | | |
F.1.d
Packet Pg. 1278 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
19+20 0.2462 0.02 Q | | |
V|
19+25 0.2463 0.02 Q | | |
V|
19+30 0.2465 0.02 Q | | |
V|
19+35 0.2466 0.02 Q | | |
V|
19+40 0.2467 0.02 Q | | |
V|
19+45 0.2469 0.02 Q | | |
V|
19+50 0.2470 0.02 Q | | |
V|
19+55 0.2470 0.01 Q | | |
V|
20+ 0 0.2471 0.01 Q | | |
V|
20+ 5 0.2472 0.01 Q | | |
V|
20+10 0.2473 0.02 Q | | |
V|
20+15 0.2475 0.02 Q | | |
V|
20+20 0.2476 0.02 Q | | |
V|
20+25 0.2477 0.02 Q | | |
V|
20+30 0.2478 0.02 Q | | |
V|
20+35 0.2479 0.02 Q | | |
V|
20+40 0.2480 0.02 Q | | |
V|
20+45 0.2482 0.02 Q | | |
V|
20+50 0.2483 0.02 Q | | |
V|
20+55 0.2483 0.01 Q | | |
V|
21+ 0 0.2484 0.01 Q | | |
V|
21+ 5 0.2485 0.01 Q | | |
V|
21+10 0.2486 0.02 Q | | |
V|
21+15 0.2488 0.02 Q | | |
V|
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V|
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V|
21+30 0.2490 0.01 Q | | |
V|
21+35 0.2491 0.01 Q | | |
V|
21+40 0.2492 0.02 Q | | |
V|
21+45 0.2493 0.02 Q | | |
F.1.d
Packet Pg. 1279 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
21+50 0.2494 0.02 Q | | |
V|
21+55 0.2495 0.01 Q | | |
V|
22+ 0 0.2496 0.01 Q | | |
V|
22+ 5 0.2497 0.01 Q | | |
V|
22+10 0.2498 0.02 Q | | |
V|
22+15 0.2499 0.02 Q | | |
V|
22+20 0.2500 0.02 Q | | |
V|
22+25 0.2501 0.01 Q | | |
V|
22+30 0.2502 0.01 Q | | |
V|
22+35 0.2503 0.01 Q | | |
V|
22+40 0.2504 0.01 Q | | |
V|
22+45 0.2504 0.01 Q | | |
V|
22+50 0.2505 0.01 Q | | |
V|
22+55 0.2506 0.01 Q | | |
V|
23+ 0 0.2507 0.01 Q | | |
V|
23+ 5 0.2508 0.01 Q | | |
V|
23+10 0.2508 0.01 Q | | |
V|
23+15 0.2509 0.01 Q | | |
V|
23+20 0.2510 0.01 Q | | |
V|
23+25 0.2511 0.01 Q | | |
V|
23+30 0.2511 0.01 Q | | |
V|
23+35 0.2512 0.01 Q | | |
V|
23+40 0.2513 0.01 Q | | |
V|
23+45 0.2514 0.01 Q | | |
V|
23+50 0.2515 0.01 Q | | |
V|
23+55 0.2515 0.01 Q | | |
V|
24+ 0 0.2516 0.01 Q | | |
V|
24+ 5 0.2517 0.01 Q | | |
V|
24+10 0.2517 0.00 Q | | |
V|
24+15 0.2517 0.00 Q | | |
F.1.d
Packet Pg. 1280 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
24+20 0.2517 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1281 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version 8.2 Study date 02/19/21 File: moval33prea2410.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------------------------------------------------------------------------ Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
--------------------------------------------------------------------- English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
--------------------------------------------------------------------- Gateway Heights
Existing Condition
Unit Hydrograph Runoff
-------------------------------------------------------------------- Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00(Ft.) Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 24 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 1.93 10.67
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 4.64 25.66
STORM EVENT (YEAR) = 10.00
Area Averaged 2-Year Rainfall = 1.930(In)
Area Averaged 100-Year Rainfall = 4.640(In)

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F.1.d
Packet Pg. 1282 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
Point rain (area averaged) = 3.045(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 3.045(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.) (In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000 0.198
Sum (F) = 0.198
Area averaged mean soil loss (F) (In/Hr) = 0.198
Minimum soil loss rate ((In/Hr)) = 0.099
(for 24 hour storm duration)
Soil low loss rate (decimal) = 0.900
--------------------------------------------------------------------- U n i t H y d r o g r a p h
FOOTHILL S-Curve
-------------------------------------------------------------------- Unit Hydrograph Data
--------------------------------------------------------------------- Unit time period Time % of lag Distribution Unit Hydrograph (hrs) Graph % (CFS)
--------------------------------------------------------------------- 1 0.083 157.948 32.675 1.821
2 0.167 315.896 53.715 2.994
3 0.250 473.844 10.920 0.609
4 0.333 631.792 2.028 0.113
5 0.417 789.740 0.662 0.037
Sum = 100.000 Sum= 5.573 ----------------------------------------------------------------------- The following loss rate calculations reflect use of the minimum calculated loss rate subtracted from the Storm Rain to produce the maximum Effective Rain value Unit Time Pattern Storm Rain Loss rate(In./Hr) Effective (Hr.) Percent (In/Hr) Max | Low (In/Hr)
1 0.08 0.07 0.024 ( 0.352) 0.022 0.002
2 0.17 0.07 0.024 ( 0.350) 0.022 0.002
3 0.25 0.07 0.024 ( 0.349) 0.022 0.002
4 0.33 0.10 0.037 ( 0.348) 0.033 0.004
5 0.42 0.10 0.037 ( 0.346) 0.033 0.004
6 0.50 0.10 0.037 ( 0.345) 0.033 0.004
7 0.58 0.10 0.037 ( 0.344) 0.033 0.004
8 0.67 0.10 0.037 ( 0.342) 0.033 0.004
9 0.75 0.10 0.037 ( 0.341) 0.033 0.004
10 0.83 0.13 0.049 ( 0.340) 0.044 0.005
11 0.92 0.13 0.049 ( 0.338) 0.044 0.005
12 1.00 0.13 0.049 ( 0.337) 0.044 0.005
13 1.08 0.10 0.037 ( 0.336) 0.033 0.004
14 1.17 0.10 0.037 ( 0.334) 0.033 0.004
15 1.25 0.10 0.037 ( 0.333) 0.033 0.004
16 1.33 0.10 0.037 ( 0.332) 0.033 0.004
17 1.42 0.10 0.037 ( 0.330) 0.033 0.004
18 1.50 0.10 0.037 ( 0.329) 0.033 0.004
19 1.58 0.10 0.037 ( 0.328) 0.033 0.004
20 1.67 0.10 0.037 ( 0.326) 0.033 0.004

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F.1.d
Packet Pg. 1283 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
21 1.75 0.10 0.037 ( 0.325) 0.033 0.004
22 1.83 0.13 0.049 ( 0.324) 0.044 0.005
23 1.92 0.13 0.049 ( 0.322) 0.044 0.005
24 2.00 0.13 0.049 ( 0.321) 0.044 0.005
25 2.08 0.13 0.049 ( 0.320) 0.044 0.005
26 2.17 0.13 0.049 ( 0.318) 0.044 0.005
27 2.25 0.13 0.049 ( 0.317) 0.044 0.005
28 2.33 0.13 0.049 ( 0.316) 0.044 0.005
29 2.42 0.13 0.049 ( 0.315) 0.044 0.005
30 2.50 0.13 0.049 ( 0.313) 0.044 0.005
31 2.58 0.17 0.061 ( 0.312) 0.055 0.006
32 2.67 0.17 0.061 ( 0.311) 0.055 0.006
33 2.75 0.17 0.061 ( 0.310) 0.055 0.006
34 2.83 0.17 0.061 ( 0.308) 0.055 0.006
35 2.92 0.17 0.061 ( 0.307) 0.055 0.006
36 3.00 0.17 0.061 ( 0.306) 0.055 0.006
37 3.08 0.17 0.061 ( 0.304) 0.055 0.006
38 3.17 0.17 0.061 ( 0.303) 0.055 0.006
39 3.25 0.17 0.061 ( 0.302) 0.055 0.006
40 3.33 0.17 0.061 ( 0.301) 0.055 0.006
41 3.42 0.17 0.061 ( 0.299) 0.055 0.006
42 3.50 0.17 0.061 ( 0.298) 0.055 0.006
43 3.58 0.17 0.061 ( 0.297) 0.055 0.006
44 3.67 0.17 0.061 ( 0.296) 0.055 0.006
45 3.75 0.17 0.061 ( 0.294) 0.055 0.006
46 3.83 0.20 0.073 ( 0.293) 0.066 0.007
47 3.92 0.20 0.073 ( 0.292) 0.066 0.007
48 4.00 0.20 0.073 ( 0.291) 0.066 0.007
49 4.08 0.20 0.073 ( 0.289) 0.066 0.007
50 4.17 0.20 0.073 ( 0.288) 0.066 0.007
51 4.25 0.20 0.073 ( 0.287) 0.066 0.007
52 4.33 0.23 0.085 ( 0.286) 0.077 0.009
53 4.42 0.23 0.085 ( 0.285) 0.077 0.009
54 4.50 0.23 0.085 ( 0.283) 0.077 0.009
55 4.58 0.23 0.085 ( 0.282) 0.077 0.009
56 4.67 0.23 0.085 ( 0.281) 0.077 0.009
57 4.75 0.23 0.085 ( 0.280) 0.077 0.009
58 4.83 0.27 0.097 ( 0.278) 0.088 0.010
59 4.92 0.27 0.097 ( 0.277) 0.088 0.010
60 5.00 0.27 0.097 ( 0.276) 0.088 0.010
61 5.08 0.20 0.073 ( 0.275) 0.066 0.007
62 5.17 0.20 0.073 ( 0.274) 0.066 0.007
63 5.25 0.20 0.073 ( 0.272) 0.066 0.007
64 5.33 0.23 0.085 ( 0.271) 0.077 0.009
65 5.42 0.23 0.085 ( 0.270) 0.077 0.009
66 5.50 0.23 0.085 ( 0.269) 0.077 0.009
67 5.58 0.27 0.097 ( 0.268) 0.088 0.010
68 5.67 0.27 0.097 ( 0.267) 0.088 0.010
69 5.75 0.27 0.097 ( 0.265) 0.088 0.010
70 5.83 0.27 0.097 ( 0.264) 0.088 0.010
71 5.92 0.27 0.097 ( 0.263) 0.088 0.010
72 6.00 0.27 0.097 ( 0.262) 0.088 0.010
73 6.08 0.30 0.110 ( 0.261) 0.099 0.011
74 6.17 0.30 0.110 ( 0.260) 0.099 0.011
75 6.25 0.30 0.110 ( 0.258) 0.099 0.011
76 6.33 0.30 0.110 ( 0.257) 0.099 0.011
77 6.42 0.30 0.110 ( 0.256) 0.099 0.011
78 6.50 0.30 0.110 ( 0.255) 0.099 0.011
79 6.58 0.33 0.122 ( 0.254) 0.110 0.012
80 6.67 0.33 0.122 ( 0.253) 0.110 0.012
81 6.75 0.33 0.122 ( 0.252) 0.110 0.012
82 6.83 0.33 0.122 ( 0.250) 0.110 0.012
83 6.92 0.33 0.122 ( 0.249) 0.110 0.012

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F.1.d
Packet Pg. 1284 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
84 7.00 0.33 0.122 ( 0.248) 0.110 0.012
85 7.08 0.33 0.122 ( 0.247) 0.110 0.012
86 7.17 0.33 0.122 ( 0.246) 0.110 0.012
87 7.25 0.33 0.122 ( 0.245) 0.110 0.012
88 7.33 0.37 0.134 ( 0.244) 0.121 0.013
89 7.42 0.37 0.134 ( 0.243) 0.121 0.013
90 7.50 0.37 0.134 ( 0.241) 0.121 0.013
91 7.58 0.40 0.146 ( 0.240) 0.132 0.015
92 7.67 0.40 0.146 ( 0.239) 0.132 0.015
93 7.75 0.40 0.146 ( 0.238) 0.132 0.015
94 7.83 0.43 0.158 ( 0.237) 0.143 0.016
95 7.92 0.43 0.158 ( 0.236) 0.143 0.016
96 8.00 0.43 0.158 ( 0.235) 0.143 0.016
97 8.08 0.50 0.183 ( 0.234) 0.164 0.018
98 8.17 0.50 0.183 ( 0.233) 0.164 0.018
99 8.25 0.50 0.183 ( 0.232) 0.164 0.018
100 8.33 0.50 0.183 ( 0.230) 0.164 0.018
101 8.42 0.50 0.183 ( 0.229) 0.164 0.018
102 8.50 0.50 0.183 ( 0.228) 0.164 0.018
103 8.58 0.53 0.195 ( 0.227) 0.175 0.019
104 8.67 0.53 0.195 ( 0.226) 0.175 0.019
105 8.75 0.53 0.195 ( 0.225) 0.175 0.019
106 8.83 0.57 0.207 ( 0.224) 0.186 0.021
107 8.92 0.57 0.207 ( 0.223) 0.186 0.021
108 9.00 0.57 0.207 ( 0.222) 0.186 0.021
109 9.08 0.63 0.231 ( 0.221) 0.208 0.023
110 9.17 0.63 0.231 ( 0.220) 0.208 0.023
111 9.25 0.63 0.231 ( 0.219) 0.208 0.023
112 9.33 0.67 0.244 0.218 ( 0.219) 0.026
113 9.42 0.67 0.244 0.217 ( 0.219) 0.027
114 9.50 0.67 0.244 0.216 ( 0.219) 0.028
115 9.58 0.70 0.256 0.215 ( 0.230) 0.041
116 9.67 0.70 0.256 0.214 ( 0.230) 0.042
117 9.75 0.70 0.256 0.213 ( 0.230) 0.043
118 9.83 0.73 0.268 0.212 ( 0.241) 0.056
119 9.92 0.73 0.268 0.211 ( 0.241) 0.057
120 10.00 0.73 0.268 0.210 ( 0.241) 0.058
121 10.08 0.50 0.183 ( 0.208) 0.164 0.018
122 10.17 0.50 0.183 ( 0.207) 0.164 0.018
123 10.25 0.50 0.183 ( 0.206) 0.164 0.018
124 10.33 0.50 0.183 ( 0.205) 0.164 0.018
125 10.42 0.50 0.183 ( 0.204) 0.164 0.018
126 10.50 0.50 0.183 ( 0.203) 0.164 0.018
127 10.58 0.67 0.244 0.202 ( 0.219) 0.041
128 10.67 0.67 0.244 0.201 ( 0.219) 0.042
129 10.75 0.67 0.244 0.201 ( 0.219) 0.043
130 10.83 0.67 0.244 0.200 ( 0.219) 0.044
131 10.92 0.67 0.244 0.199 ( 0.219) 0.045
132 11.00 0.67 0.244 0.198 ( 0.219) 0.046
133 11.08 0.63 0.231 0.197 ( 0.208) 0.035
134 11.17 0.63 0.231 0.196 ( 0.208) 0.036
135 11.25 0.63 0.231 0.195 ( 0.208) 0.037
136 11.33 0.63 0.231 0.194 ( 0.208) 0.038
137 11.42 0.63 0.231 0.193 ( 0.208) 0.039
138 11.50 0.63 0.231 0.192 ( 0.208) 0.040
139 11.58 0.57 0.207 ( 0.191) 0.186 0.021
140 11.67 0.57 0.207 ( 0.190) 0.186 0.021
141 11.75 0.57 0.207 ( 0.189) 0.186 0.021
142 11.83 0.60 0.219 0.188 ( 0.197) 0.031
143 11.92 0.60 0.219 0.187 ( 0.197) 0.032
144 12.00 0.60 0.219 0.186 ( 0.197) 0.033
145 12.08 0.83 0.304 0.185 ( 0.274) 0.119
146 12.17 0.83 0.304 0.184 ( 0.274) 0.120

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F.1.d
Packet Pg. 1285 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
147 12.25 0.83 0.304 0.183 ( 0.274) 0.121
148 12.33 0.87 0.317 0.182 ( 0.285) 0.134
149 12.42 0.87 0.317 0.182 ( 0.285) 0.135
150 12.50 0.87 0.317 0.181 ( 0.285) 0.136
151 12.58 0.93 0.341 0.180 ( 0.307) 0.161
152 12.67 0.93 0.341 0.179 ( 0.307) 0.162
153 12.75 0.93 0.341 0.178 ( 0.307) 0.163
154 12.83 0.97 0.353 0.177 ( 0.318) 0.176
155 12.92 0.97 0.353 0.176 ( 0.318) 0.177
156 13.00 0.97 0.353 0.175 ( 0.318) 0.178
157 13.08 1.13 0.414 0.174 ( 0.373) 0.240
158 13.17 1.13 0.414 0.173 ( 0.373) 0.241
159 13.25 1.13 0.414 0.173 ( 0.373) 0.242
160 13.33 1.13 0.414 0.172 ( 0.373) 0.242
161 13.42 1.13 0.414 0.171 ( 0.373) 0.243
162 13.50 1.13 0.414 0.170 ( 0.373) 0.244
163 13.58 0.77 0.280 0.169 ( 0.252) 0.111
164 13.67 0.77 0.280 0.168 ( 0.252) 0.112
165 13.75 0.77 0.280 0.167 ( 0.252) 0.113
166 13.83 0.77 0.280 0.166 ( 0.252) 0.114
167 13.92 0.77 0.280 0.166 ( 0.252) 0.114
168 14.00 0.77 0.280 0.165 ( 0.252) 0.115
169 14.08 0.90 0.329 0.164 ( 0.296) 0.165
170 14.17 0.90 0.329 0.163 ( 0.296) 0.166
171 14.25 0.90 0.329 0.162 ( 0.296) 0.167
172 14.33 0.87 0.317 0.161 ( 0.285) 0.155
173 14.42 0.87 0.317 0.161 ( 0.285) 0.156
174 14.50 0.87 0.317 0.160 ( 0.285) 0.157
175 14.58 0.87 0.317 0.159 ( 0.285) 0.158
176 14.67 0.87 0.317 0.158 ( 0.285) 0.158
177 14.75 0.87 0.317 0.157 ( 0.285) 0.159
178 14.83 0.83 0.304 0.157 ( 0.274) 0.148
179 14.92 0.83 0.304 0.156 ( 0.274) 0.149
180 15.00 0.83 0.304 0.155 ( 0.274) 0.150
181 15.08 0.80 0.292 0.154 ( 0.263) 0.138
182 15.17 0.80 0.292 0.153 ( 0.263) 0.139
183 15.25 0.80 0.292 0.153 ( 0.263) 0.140
184 15.33 0.77 0.280 0.152 ( 0.252) 0.128
185 15.42 0.77 0.280 0.151 ( 0.252) 0.129
186 15.50 0.77 0.280 0.150 ( 0.252) 0.130
187 15.58 0.63 0.231 0.149 ( 0.208) 0.082
188 15.67 0.63 0.231 0.149 ( 0.208) 0.083
189 15.75 0.63 0.231 0.148 ( 0.208) 0.083
190 15.83 0.63 0.231 0.147 ( 0.208) 0.084
191 15.92 0.63 0.231 0.146 ( 0.208) 0.085
192 16.00 0.63 0.231 0.146 ( 0.208) 0.086
193 16.08 0.13 0.049 ( 0.145) 0.044 0.005
194 16.17 0.13 0.049 ( 0.144) 0.044 0.005
195 16.25 0.13 0.049 ( 0.143) 0.044 0.005
196 16.33 0.13 0.049 ( 0.143) 0.044 0.005
197 16.42 0.13 0.049 ( 0.142) 0.044 0.005
198 16.50 0.13 0.049 ( 0.141) 0.044 0.005
199 16.58 0.10 0.037 ( 0.141) 0.033 0.004
200 16.67 0.10 0.037 ( 0.140) 0.033 0.004
201 16.75 0.10 0.037 ( 0.139) 0.033 0.004
202 16.83 0.10 0.037 ( 0.138) 0.033 0.004
203 16.92 0.10 0.037 ( 0.138) 0.033 0.004
204 17.00 0.10 0.037 ( 0.137) 0.033 0.004
205 17.08 0.17 0.061 ( 0.136) 0.055 0.006
206 17.17 0.17 0.061 ( 0.136) 0.055 0.006
207 17.25 0.17 0.061 ( 0.135) 0.055 0.006
208 17.33 0.17 0.061 ( 0.134) 0.055 0.006
209 17.42 0.17 0.061 ( 0.134) 0.055 0.006

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F.1.d
Packet Pg. 1286 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
210 17.50 0.17 0.061 ( 0.133) 0.055 0.006
211 17.58 0.17 0.061 ( 0.132) 0.055 0.006
212 17.67 0.17 0.061 ( 0.132) 0.055 0.006
213 17.75 0.17 0.061 ( 0.131) 0.055 0.006
214 17.83 0.13 0.049 ( 0.130) 0.044 0.005
215 17.92 0.13 0.049 ( 0.130) 0.044 0.005
216 18.00 0.13 0.049 ( 0.129) 0.044 0.005
217 18.08 0.13 0.049 ( 0.128) 0.044 0.005
218 18.17 0.13 0.049 ( 0.128) 0.044 0.005
219 18.25 0.13 0.049 ( 0.127) 0.044 0.005
220 18.33 0.13 0.049 ( 0.127) 0.044 0.005
221 18.42 0.13 0.049 ( 0.126) 0.044 0.005
222 18.50 0.13 0.049 ( 0.125) 0.044 0.005
223 18.58 0.10 0.037 ( 0.125) 0.033 0.004
224 18.67 0.10 0.037 ( 0.124) 0.033 0.004
225 18.75 0.10 0.037 ( 0.124) 0.033 0.004
226 18.83 0.07 0.024 ( 0.123) 0.022 0.002
227 18.92 0.07 0.024 ( 0.122) 0.022 0.002
228 19.00 0.07 0.024 ( 0.122) 0.022 0.002
229 19.08 0.10 0.037 ( 0.121) 0.033 0.004
230 19.17 0.10 0.037 ( 0.121) 0.033 0.004
231 19.25 0.10 0.037 ( 0.120) 0.033 0.004
232 19.33 0.13 0.049 ( 0.119) 0.044 0.005
233 19.42 0.13 0.049 ( 0.119) 0.044 0.005
234 19.50 0.13 0.049 ( 0.118) 0.044 0.005
235 19.58 0.10 0.037 ( 0.118) 0.033 0.004
236 19.67 0.10 0.037 ( 0.117) 0.033 0.004
237 19.75 0.10 0.037 ( 0.117) 0.033 0.004
238 19.83 0.07 0.024 ( 0.116) 0.022 0.002
239 19.92 0.07 0.024 ( 0.116) 0.022 0.002
240 20.00 0.07 0.024 ( 0.115) 0.022 0.002
241 20.08 0.10 0.037 ( 0.115) 0.033 0.004
242 20.17 0.10 0.037 ( 0.114) 0.033 0.004
243 20.25 0.10 0.037 ( 0.114) 0.033 0.004
244 20.33 0.10 0.037 ( 0.113) 0.033 0.004
245 20.42 0.10 0.037 ( 0.113) 0.033 0.004
246 20.50 0.10 0.037 ( 0.112) 0.033 0.004
247 20.58 0.10 0.037 ( 0.112) 0.033 0.004
248 20.67 0.10 0.037 ( 0.111) 0.033 0.004
249 20.75 0.10 0.037 ( 0.111) 0.033 0.004
250 20.83 0.07 0.024 ( 0.110) 0.022 0.002
251 20.92 0.07 0.024 ( 0.110) 0.022 0.002
252 21.00 0.07 0.024 ( 0.110) 0.022 0.002
253 21.08 0.10 0.037 ( 0.109) 0.033 0.004
254 21.17 0.10 0.037 ( 0.109) 0.033 0.004
255 21.25 0.10 0.037 ( 0.108) 0.033 0.004
256 21.33 0.07 0.024 ( 0.108) 0.022 0.002
257 21.42 0.07 0.024 ( 0.107) 0.022 0.002
258 21.50 0.07 0.024 ( 0.107) 0.022 0.002
259 21.58 0.10 0.037 ( 0.107) 0.033 0.004
260 21.67 0.10 0.037 ( 0.106) 0.033 0.004
261 21.75 0.10 0.037 ( 0.106) 0.033 0.004
262 21.83 0.07 0.024 ( 0.105) 0.022 0.002
263 21.92 0.07 0.024 ( 0.105) 0.022 0.002
264 22.00 0.07 0.024 ( 0.105) 0.022 0.002
265 22.08 0.10 0.037 ( 0.104) 0.033 0.004
266 22.17 0.10 0.037 ( 0.104) 0.033 0.004
267 22.25 0.10 0.037 ( 0.104) 0.033 0.004
268 22.33 0.07 0.024 ( 0.103) 0.022 0.002
269 22.42 0.07 0.024 ( 0.103) 0.022 0.002
270 22.50 0.07 0.024 ( 0.103) 0.022 0.002
271 22.58 0.07 0.024 ( 0.102) 0.022 0.002
272 22.67 0.07 0.024 ( 0.102) 0.022 0.002

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F.1.d
Packet Pg. 1287 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
273 22.75 0.07 0.024 ( 0.102) 0.022 0.002
274 22.83 0.07 0.024 ( 0.102) 0.022 0.002
275 22.92 0.07 0.024 ( 0.101) 0.022 0.002
276 23.00 0.07 0.024 ( 0.101) 0.022 0.002
277 23.08 0.07 0.024 ( 0.101) 0.022 0.002
278 23.17 0.07 0.024 ( 0.101) 0.022 0.002
279 23.25 0.07 0.024 ( 0.100) 0.022 0.002
280 23.33 0.07 0.024 ( 0.100) 0.022 0.002
281 23.42 0.07 0.024 ( 0.100) 0.022 0.002
282 23.50 0.07 0.024 ( 0.100) 0.022 0.002
283 23.58 0.07 0.024 ( 0.100) 0.022 0.002
284 23.67 0.07 0.024 ( 0.100) 0.022 0.002
285 23.75 0.07 0.024 ( 0.099) 0.022 0.002
286 23.83 0.07 0.024 ( 0.099) 0.022 0.002
287 23.92 0.07 0.024 ( 0.099) 0.022 0.002
288 24.00 0.07 0.024 ( 0.099) 0.022 0.002
(Loss Rate Not Used)
Sum = 100.0 Sum = 9.6
Flood volume = Effective rainfall 0.80(In)
times area 5.5(Ac.)/[(In)/(Ft.)] = 0.4(Ac.Ft)
Total soil loss = 2.24(In)
Total soil loss = 1.033(Ac.Ft)
Total rainfall = 3.04(In)
Flood volume = 16127.9 Cubic Feet
Total soil loss = 44994.8 Cubic Feet
-------------------------------------------------------------------- Peak flow rate of this hydrograph = 1.357(CFS)
-------------------------------------------------------------------- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 24 - H O U R S T O R M
R u n o f f H y d r o g r a p h
-------------------------------------------------------------------- Hydrograph in 5 Minute intervals ((CFS))
-------------------------------------------------------------------- Time(h+m) Volume Ac.Ft Q(CFS) 0 2.5 5.0 7.5 10.0 ----------------------------------------------------------------------- 0+ 5 0.0000 0.00 Q | | | |
0+10 0.0001 0.01 Q | | | |
0+15 0.0002 0.01 Q | | | |
0+20 0.0003 0.02 Q | | | |
0+25 0.0004 0.02 Q | | | |
0+30 0.0006 0.02 Q | | | |
0+35 0.0007 0.02 Q | | | |
0+40 0.0009 0.02 Q | | | |
0+45 0.0010 0.02 Q | | | |
0+50 0.0012 0.02 Q | | | |
0+55 0.0013 0.03 Q | | | |
1+ 0 0.0015 0.03 Q | | | |
1+ 5 0.0017 0.02 Q | | | |
1+10 0.0018 0.02 Q | | | |
1+15 0.0020 0.02 Q | | | |
1+20 0.0021 0.02 Q | | | |
1+25 0.0023 0.02 Q | | | |
1+30 0.0024 0.02 Q | | | |
1+35 0.0025 0.02 Q | | | |
1+40 0.0027 0.02 Q | | | |
1+45 0.0028 0.02 Q | | | |
1+50 0.0030 0.02 Q | | | |
1+55 0.0032 0.03 Q | | | |
2+ 0 0.0034 0.03 Q | | | |
2+ 5 0.0035 0.03 Q | | | |
2+10 0.0037 0.03 Q | | | |

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F.1.d
Packet Pg. 1288 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
2+15 0.0039 0.03 Q | | | |
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7+20 0.0238 0.07 Q V | | | |
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F.1.d
Packet Pg. 1289 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
7+30 0.0248 0.07 Q V | | | |
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12+25 0.1036 0.74 | Q |V | | |
12+30 0.1088 0.75 | Q |V | | |
12+35 0.1143 0.80 | Q | V | | |
12+40 0.1204 0.88 | Q | V | | |

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F.1.d
Packet Pg. 1290 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
12+45 0.1266 0.90 | Q | V | | |
12+50 0.1330 0.93 | Q | V | | |
12+55 0.1397 0.97 | Q | V | | |
13+ 0 0.1465 0.99 | Q | V | | |
13+ 5 0.1541 1.10 | Q | V | | |
13+10 0.1630 1.29 | Q | V | | |
13+15 0.1722 1.33 | Q | V | | |
13+20 0.1815 1.35 | Q | V| | |
13+25 0.1908 1.35 | Q | V | |
13+30 0.2001 1.36 | Q | |V | |
13+35 0.2078 1.12 | Q | | V | |
13+40 0.2128 0.72 | Q | | V | |
13+45 0.2172 0.64 | Q | | V | |
13+50 0.2216 0.63 | Q | | V | |
13+55 0.2260 0.63 | Q | | V | |
14+ 0 0.2304 0.64 | Q | | V | |
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14+50 0.2903 0.87 | Q | | |V |
14+55 0.2960 0.83 | Q | | |V |
15+ 0 0.3017 0.83 | Q | | | V |
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15+25 0.3283 0.73 | Q | | | V |
15+30 0.3333 0.72 | Q | | | V |
15+35 0.3376 0.64 | Q | | | V |
15+40 0.3410 0.49 |Q | | | V |
15+45 0.3443 0.47 |Q | | | V |
15+50 0.3475 0.47 |Q | | | V |
15+55 0.3507 0.47 |Q | | | V |
16+ 0 0.3540 0.47 |Q | | | V |
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16+10 0.3569 0.09 Q | | | V |
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16+20 0.3574 0.03 Q | | | V |
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17+50 0.3609 0.03 Q | | | V |
17+55 0.3611 0.03 Q | | | V|

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F.1.d
Packet Pg. 1291 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
18+ 0 0.3612 0.03 Q | | | V|
18+ 5 0.3614 0.03 Q | | | V|
18+10 0.3616 0.03 Q | | | V|
18+15 0.3618 0.03 Q | | | V|
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18+45 0.3628 0.02 Q | | | V|
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18+55 0.3631 0.01 Q | | | V|
19+ 0 0.3632 0.01 Q | | | V|
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F.1.d
Packet Pg. 1292 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33prea2410
23+15 0.3693 0.01 Q | | | V|
23+20 0.3694 0.01 Q | | | V|
23+25 0.3695 0.01 Q | | | V|
23+30 0.3696 0.01 Q | | | V|
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24+ 0 0.3702 0.01 Q | | | V|
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24+10 0.3702 0.00 Q | | | V|
24+15 0.3702 0.00 Q | | | V|
24+20 0.3702 0.00 Q | | | V
-----------------------------------------------------------------------

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F.1.d
Packet Pg. 1293 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33prea24100.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Existing Condition
Unit Hydrograph Runoff
Area A
------------------------------------------------------------------ --
Drainage Area = 5.53(Ac.) = 0.009 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 5.53(Ac.) =

0.009 Sq. Mi.

Length along longest watercourse = 852.00(Ft.)
Length along longest watercourse measured to centroid = 341.00 (Ft.)
Length along longest watercourse = 0.161 Mi.

Length along longest watercourse measured to centroid = 0.065 Mi.

Difference in elevation = 75.00(Ft.)
Slope along watercourse = 464.7887 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.053 Hr.

Lag time = 3.17 Min.
25% of lag time = 0.79 Min.
40% of lag time = 1.27 Min.

Unit time = 5.00 Min.

Duration of storm = 24 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1294 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

5.53 1.93 10.67
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

5.53 4.64 25.66
STORM EVENT (YEAR) = 100.00
Area Averaged 2-Year Rainfall = 1.930(In)
Area Averaged 100-Year Rainfall = 4.640(In)
Point rain (area averaged) = 4.640(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 4.640(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

5.530 84.00 0.000
Total Area Entered = 5.53(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-3 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 93.4 0.086 0.000 0.086 1.000

0.086
Sum (F) =

0.086
Area averaged mean soil loss (F) (In/Hr) = 0.086
Minimum soil loss rate ((In/Hr)) = 0.043
(for 24 hour storm duration)
Soil low loss rate (decimal) = 0.900
------------------------------------------------------------------ ---
U n i t H y d r o g r a p h
FOOTHILL S-Curve
------------------------------------------------------------------ --
Unit Hydrograph Data
------------------------------------------------------------------ ---
Unit time period Time % of lag Distribution Unit Hydrograph (hrs) Graph % (CFS)
------------------------------------------------------------------ ---
1 0.083 157.948 32.675 1.821
2 0.167 315.896 53.715 2.994
3 0.250 473.844 10.920 0.609
4 0.333 631.792 2.028 0.113
5 0.417 789.740 0.662 0.037
Sum = 100.000 Sum= 5.573
----------------------------------------------------------------------- The following loss rate calculations reflect use of the minimum calculated loss
rate subtracted from the Storm Rain to produce the maximum Effective Rain value
F.1.d
Packet Pg. 1295 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) Unit Time Pattern Storm Rain Loss rate(In./Hr) Effective (Hr.) Percent (In/Hr) Max | Low (In/Hr)
1 0.08 0.07 0.037 ( 0.152) 0.033 0.004
2 0.17 0.07 0.037 ( 0.152) 0.033 0.004
3 0.25 0.07 0.037 ( 0.151) 0.033 0.004
4 0.33 0.10 0.056 ( 0.150) 0.050 0.006
5 0.42 0.10 0.056 ( 0.150) 0.050 0.006
6 0.50 0.10 0.056 ( 0.149) 0.050 0.006
7 0.58 0.10 0.056 ( 0.149) 0.050 0.006
8 0.67 0.10 0.056 ( 0.148) 0.050 0.006
9 0.75 0.10 0.056 ( 0.147) 0.050 0.006
10 0.83 0.13 0.074 ( 0.147) 0.067 0.007
11 0.92 0.13 0.074 ( 0.146) 0.067 0.007
12 1.00 0.13 0.074 ( 0.146) 0.067 0.007
13 1.08 0.10 0.056 ( 0.145) 0.050 0.006
14 1.17 0.10 0.056 ( 0.145) 0.050 0.006
15 1.25 0.10 0.056 ( 0.144) 0.050 0.006
16 1.33 0.10 0.056 ( 0.143) 0.050 0.006
17 1.42 0.10 0.056 ( 0.143) 0.050 0.006
18 1.50 0.10 0.056 ( 0.142) 0.050 0.006
19 1.58 0.10 0.056 ( 0.142) 0.050 0.006
20 1.67 0.10 0.056 ( 0.141) 0.050 0.006
21 1.75 0.10 0.056 ( 0.141) 0.050 0.006
22 1.83 0.13 0.074 ( 0.140) 0.067 0.007
23 1.92 0.13 0.074 ( 0.139) 0.067 0.007
24 2.00 0.13 0.074 ( 0.139) 0.067 0.007
25 2.08 0.13 0.074 ( 0.138) 0.067 0.007
26 2.17 0.13 0.074 ( 0.138) 0.067 0.007
27 2.25 0.13 0.074 ( 0.137) 0.067 0.007
28 2.33 0.13 0.074 ( 0.137) 0.067 0.007
29 2.42 0.13 0.074 ( 0.136) 0.067 0.007
30 2.50 0.13 0.074 ( 0.136) 0.067 0.007
31 2.58 0.17 0.093 ( 0.135) 0.084 0.009
32 2.67 0.17 0.093 ( 0.134) 0.084 0.009
33 2.75 0.17 0.093 ( 0.134) 0.084 0.009
34 2.83 0.17 0.093 ( 0.133) 0.084 0.009
35 2.92 0.17 0.093 ( 0.133) 0.084 0.009
36 3.00 0.17 0.093 ( 0.132) 0.084 0.009
37 3.08 0.17 0.093 ( 0.132) 0.084 0.009
38 3.17 0.17 0.093 ( 0.131) 0.084 0.009
39 3.25 0.17 0.093 ( 0.131) 0.084 0.009
40 3.33 0.17 0.093 ( 0.130) 0.084 0.009
41 3.42 0.17 0.093 ( 0.129) 0.084 0.009
42 3.50 0.17 0.093 ( 0.129) 0.084 0.009
43 3.58 0.17 0.093 ( 0.128) 0.084 0.009
44 3.67 0.17 0.093 ( 0.128) 0.084 0.009
45 3.75 0.17 0.093 ( 0.127) 0.084 0.009
46 3.83 0.20 0.111 ( 0.127) 0.100 0.011
47 3.92 0.20 0.111 ( 0.126) 0.100 0.011
48 4.00 0.20 0.111 ( 0.126) 0.100 0.011
49 4.08 0.20 0.111 ( 0.125) 0.100 0.011
50 4.17 0.20 0.111 ( 0.125) 0.100 0.011
51 4.25 0.20 0.111 ( 0.124) 0.100 0.011
52 4.33 0.23 0.130 ( 0.124) 0.117 0.013
53 4.42 0.23 0.130 ( 0.123) 0.117 0.013
54 4.50 0.23 0.130 ( 0.123) 0.117 0.013
55 4.58 0.23 0.130 ( 0.122) 0.117 0.013
56 4.67 0.23 0.130 ( 0.121) 0.117 0.013
57 4.75 0.23 0.130 ( 0.121) 0.117 0.013
F.1.d
Packet Pg. 1296 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 58 4.83 0.27 0.148 0.120 ( 0.134) 0.028
59 4.92 0.27 0.148 0.120 ( 0.134) 0.029
60 5.00 0.27 0.148 0.119 ( 0.134) 0.029
61 5.08 0.20 0.111 ( 0.119) 0.100 0.011
62 5.17 0.20 0.111 ( 0.118) 0.100 0.011
63 5.25 0.20 0.111 ( 0.118) 0.100 0.011
64 5.33 0.23 0.130 ( 0.117) 0.117 0.013
65 5.42 0.23 0.130 0.117 ( 0.117) 0.013
66 5.50 0.23 0.130 0.116 ( 0.117) 0.014
67 5.58 0.27 0.148 0.116 ( 0.134) 0.033
68 5.67 0.27 0.148 0.115 ( 0.134) 0.033
69 5.75 0.27 0.148 0.115 ( 0.134) 0.034
70 5.83 0.27 0.148 0.114 ( 0.134) 0.034
71 5.92 0.27 0.148 0.114 ( 0.134) 0.035
72 6.00 0.27 0.148 0.113 ( 0.134) 0.035
73 6.08 0.30 0.167 0.113 ( 0.150) 0.054
74 6.17 0.30 0.167 0.112 ( 0.150) 0.055
75 6.25 0.30 0.167 0.112 ( 0.150) 0.055
76 6.33 0.30 0.167 0.111 ( 0.150) 0.056
77 6.42 0.30 0.167 0.111 ( 0.150) 0.056
78 6.50 0.30 0.167 0.110 ( 0.150) 0.057
79 6.58 0.33 0.186 0.110 ( 0.167) 0.076
80 6.67 0.33 0.186 0.109 ( 0.167) 0.076
81 6.75 0.33 0.186 0.109 ( 0.167) 0.077
82 6.83 0.33 0.186 0.108 ( 0.167) 0.077
83 6.92 0.33 0.186 0.108 ( 0.167) 0.078
84 7.00 0.33 0.186 0.107 ( 0.167) 0.078
85 7.08 0.33 0.186 0.107 ( 0.167) 0.079
86 7.17 0.33 0.186 0.106 ( 0.167) 0.079
87 7.25 0.33 0.186 0.106 ( 0.167) 0.080
88 7.33 0.37 0.204 0.105 ( 0.184) 0.099
89 7.42 0.37 0.204 0.105 ( 0.184) 0.099
90 7.50 0.37 0.204 0.104 ( 0.184) 0.100
91 7.58 0.40 0.223 0.104 ( 0.200) 0.119
92 7.67 0.40 0.223 0.103 ( 0.200) 0.119
93 7.75 0.40 0.223 0.103 ( 0.200) 0.120
94 7.83 0.43 0.241 0.102 ( 0.217) 0.139
95 7.92 0.43 0.241 0.102 ( 0.217) 0.139
96 8.00 0.43 0.241 0.102 ( 0.217) 0.140
97 8.08 0.50 0.278 0.101 ( 0.251) 0.177
98 8.17 0.50 0.278 0.101 ( 0.251) 0.178
99 8.25 0.50 0.278 0.100 ( 0.251) 0.178
100 8.33 0.50 0.278 0.100 ( 0.251) 0.179
101 8.42 0.50 0.278 0.099 ( 0.251) 0.179
102 8.50 0.50 0.278 0.099 ( 0.251) 0.180
103 8.58 0.53 0.297 0.098 ( 0.267) 0.199
104 8.67 0.53 0.297 0.098 ( 0.267) 0.199
105 8.75 0.53 0.297 0.097 ( 0.267) 0.200
106 8.83 0.57 0.316 0.097 ( 0.284) 0.219
107 8.92 0.57 0.316 0.096 ( 0.284) 0.219
108 9.00 0.57 0.316 0.096 ( 0.284) 0.220
109 9.08 0.63 0.353 0.096 ( 0.317) 0.257
110 9.17 0.63 0.353 0.095 ( 0.317) 0.258
111 9.25 0.63 0.353 0.095 ( 0.317) 0.258
112 9.33 0.67 0.371 0.094 ( 0.334) 0.277
113 9.42 0.67 0.371 0.094 ( 0.334) 0.277
114 9.50 0.67 0.371 0.093 ( 0.334) 0.278
115 9.58 0.70 0.390 0.093 ( 0.351) 0.297
116 9.67 0.70 0.390 0.092 ( 0.351) 0.297
117 9.75 0.70 0.390 0.092 ( 0.351) 0.298
F.1.d
Packet Pg. 1297 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 118 9.83 0.73 0.408 0.091 ( 0.367) 0.317
119 9.92 0.73 0.408 0.091 ( 0.367) 0.317
120 10.00 0.73 0.408 0.091 ( 0.367) 0.318
121 10.08 0.50 0.278 0.090 ( 0.251) 0.188
122 10.17 0.50 0.278 0.090 ( 0.251) 0.189
123 10.25 0.50 0.278 0.089 ( 0.251) 0.189
124 10.33 0.50 0.278 0.089 ( 0.251) 0.190
125 10.42 0.50 0.278 0.088 ( 0.251) 0.190
126 10.50 0.50 0.278 0.088 ( 0.251) 0.190
127 10.58 0.67 0.371 0.088 ( 0.334) 0.284
128 10.67 0.67 0.371 0.087 ( 0.334) 0.284
129 10.75 0.67 0.371 0.087 ( 0.334) 0.284
130 10.83 0.67 0.371 0.086 ( 0.334) 0.285
131 10.92 0.67 0.371 0.086 ( 0.334) 0.285
132 11.00 0.67 0.371 0.085 ( 0.334) 0.286
133 11.08 0.63 0.353 0.085 ( 0.317) 0.268
134 11.17 0.63 0.353 0.085 ( 0.317) 0.268
135 11.25 0.63 0.353 0.084 ( 0.317) 0.268
136 11.33 0.63 0.353 0.084 ( 0.317) 0.269
137 11.42 0.63 0.353 0.083 ( 0.317) 0.269
138 11.50 0.63 0.353 0.083 ( 0.317) 0.270
139 11.58 0.57 0.316 0.083 ( 0.284) 0.233
140 11.67 0.57 0.316 0.082 ( 0.284) 0.233
141 11.75 0.57 0.316 0.082 ( 0.284) 0.234
142 11.83 0.60 0.334 0.081 ( 0.301) 0.253
143 11.92 0.60 0.334 0.081 ( 0.301) 0.253
144 12.00 0.60 0.334 0.080 ( 0.301) 0.254
145 12.08 0.83 0.464 0.080 ( 0.418) 0.384
146 12.17 0.83 0.464 0.080 ( 0.418) 0.384
147 12.25 0.83 0.464 0.079 ( 0.418) 0.385
148 12.33 0.87 0.483 0.079 ( 0.434) 0.404
149 12.42 0.87 0.483 0.078 ( 0.434) 0.404
150 12.50 0.87 0.483 0.078 ( 0.434) 0.404
151 12.58 0.93 0.520 0.078 ( 0.468) 0.442
152 12.67 0.93 0.520 0.077 ( 0.468) 0.442
153 12.75 0.93 0.520 0.077 ( 0.468) 0.443
154 12.83 0.97 0.538 0.077 ( 0.484) 0.462
155 12.92 0.97 0.538 0.076 ( 0.484) 0.462
156 13.00 0.97 0.538 0.076 ( 0.484) 0.462
157 13.08 1.13 0.631 0.075 ( 0.568) 0.556
158 13.17 1.13 0.631 0.075 ( 0.568) 0.556
159 13.25 1.13 0.631 0.075 ( 0.568) 0.556
160 13.33 1.13 0.631 0.074 ( 0.568) 0.557
161 13.42 1.13 0.631 0.074 ( 0.568) 0.557
162 13.50 1.13 0.631 0.073 ( 0.568) 0.558
163 13.58 0.77 0.427 0.073 ( 0.384) 0.354
164 13.67 0.77 0.427 0.073 ( 0.384) 0.354
165 13.75 0.77 0.427 0.072 ( 0.384) 0.355
166 13.83 0.77 0.427 0.072 ( 0.384) 0.355
167 13.92 0.77 0.427 0.072 ( 0.384) 0.355
168 14.00 0.77 0.427 0.071 ( 0.384) 0.356
169 14.08 0.90 0.501 0.071 ( 0.451) 0.430
170 14.17 0.90 0.501 0.071 ( 0.451) 0.431
171 14.25 0.90 0.501 0.070 ( 0.451) 0.431
172 14.33 0.87 0.483 0.070 ( 0.434) 0.413
173 14.42 0.87 0.483 0.069 ( 0.434) 0.413
174 14.50 0.87 0.483 0.069 ( 0.434) 0.413
175 14.58 0.87 0.483 0.069 ( 0.434) 0.414
176 14.67 0.87 0.483 0.068 ( 0.434) 0.414
177 14.75 0.87 0.483 0.068 ( 0.434) 0.415
F.1.d
Packet Pg. 1298 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 178 14.83 0.83 0.464 0.068 ( 0.418) 0.396
179 14.92 0.83 0.464 0.067 ( 0.418) 0.397
180 15.00 0.83 0.464 0.067 ( 0.418) 0.397
181 15.08 0.80 0.445 0.067 ( 0.401) 0.379
182 15.17 0.80 0.445 0.066 ( 0.401) 0.379
183 15.25 0.80 0.445 0.066 ( 0.401) 0.379
184 15.33 0.77 0.427 0.066 ( 0.384) 0.361
185 15.42 0.77 0.427 0.065 ( 0.384) 0.362
186 15.50 0.77 0.427 0.065 ( 0.384) 0.362
187 15.58 0.63 0.353 0.065 ( 0.317) 0.288
188 15.67 0.63 0.353 0.064 ( 0.317) 0.288
189 15.75 0.63 0.353 0.064 ( 0.317) 0.289
190 15.83 0.63 0.353 0.064 ( 0.317) 0.289
191 15.92 0.63 0.353 0.063 ( 0.317) 0.289
192 16.00 0.63 0.353 0.063 ( 0.317) 0.290
193 16.08 0.13 0.074 0.063 ( 0.067) 0.012
194 16.17 0.13 0.074 0.062 ( 0.067) 0.012
195 16.25 0.13 0.074 0.062 ( 0.067) 0.012
196 16.33 0.13 0.074 0.062 ( 0.067) 0.013
197 16.42 0.13 0.074 0.061 ( 0.067) 0.013
198 16.50 0.13 0.074 0.061 ( 0.067) 0.013
199 16.58 0.10 0.056 ( 0.061) 0.050 0.006
200 16.67 0.10 0.056 ( 0.060) 0.050 0.006
201 16.75 0.10 0.056 ( 0.060) 0.050 0.006
202 16.83 0.10 0.056 ( 0.060) 0.050 0.006
203 16.92 0.10 0.056 ( 0.060) 0.050 0.006
204 17.00 0.10 0.056 ( 0.059) 0.050 0.006
205 17.08 0.17 0.093 0.059 ( 0.084) 0.034
206 17.17 0.17 0.093 0.059 ( 0.084) 0.034
207 17.25 0.17 0.093 0.058 ( 0.084) 0.034
208 17.33 0.17 0.093 0.058 ( 0.084) 0.035
209 17.42 0.17 0.093 0.058 ( 0.084) 0.035
210 17.50 0.17 0.093 0.058 ( 0.084) 0.035
211 17.58 0.17 0.093 0.057 ( 0.084) 0.036
212 17.67 0.17 0.093 0.057 ( 0.084) 0.036
213 17.75 0.17 0.093 0.057 ( 0.084) 0.036
214 17.83 0.13 0.074 0.056 ( 0.067) 0.018
215 17.92 0.13 0.074 0.056 ( 0.067) 0.018
216 18.00 0.13 0.074 0.056 ( 0.067) 0.018
217 18.08 0.13 0.074 0.056 ( 0.067) 0.019
218 18.17 0.13 0.074 0.055 ( 0.067) 0.019
219 18.25 0.13 0.074 0.055 ( 0.067) 0.019
220 18.33 0.13 0.074 0.055 ( 0.067) 0.020
221 18.42 0.13 0.074 0.054 ( 0.067) 0.020
222 18.50 0.13 0.074 0.054 ( 0.067) 0.020
223 18.58 0.10 0.056 ( 0.054) 0.050 0.006
224 18.67 0.10 0.056 ( 0.054) 0.050 0.006
225 18.75 0.10 0.056 ( 0.053) 0.050 0.006
226 18.83 0.07 0.037 ( 0.053) 0.033 0.004
227 18.92 0.07 0.037 ( 0.053) 0.033 0.004
228 19.00 0.07 0.037 ( 0.053) 0.033 0.004
229 19.08 0.10 0.056 ( 0.052) 0.050 0.006
230 19.17 0.10 0.056 ( 0.052) 0.050 0.006
231 19.25 0.10 0.056 ( 0.052) 0.050 0.006
232 19.33 0.13 0.074 0.052 ( 0.067) 0.023
233 19.42 0.13 0.074 0.051 ( 0.067) 0.023
234 19.50 0.13 0.074 0.051 ( 0.067) 0.023
235 19.58 0.10 0.056 ( 0.051) 0.050 0.006
236 19.67 0.10 0.056 ( 0.051) 0.050 0.006
237 19.75 0.10 0.056 ( 0.050) 0.050 0.006
F.1.d
Packet Pg. 1299 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 238 19.83 0.07 0.037 ( 0.050) 0.033 0.004
239 19.92 0.07 0.037 ( 0.050) 0.033 0.004
240 20.00 0.07 0.037 ( 0.050) 0.033 0.004
241 20.08 0.10 0.056 0.050 ( 0.050) 0.006
242 20.17 0.10 0.056 0.049 ( 0.050) 0.006
243 20.25 0.10 0.056 0.049 ( 0.050) 0.007
244 20.33 0.10 0.056 0.049 ( 0.050) 0.007
245 20.42 0.10 0.056 0.049 ( 0.050) 0.007
246 20.50 0.10 0.056 0.049 ( 0.050) 0.007
247 20.58 0.10 0.056 0.048 ( 0.050) 0.007
248 20.67 0.10 0.056 0.048 ( 0.050) 0.008
249 20.75 0.10 0.056 0.048 ( 0.050) 0.008
250 20.83 0.07 0.037 ( 0.048) 0.033 0.004
251 20.92 0.07 0.037 ( 0.048) 0.033 0.004
252 21.00 0.07 0.037 ( 0.047) 0.033 0.004
253 21.08 0.10 0.056 0.047 ( 0.050) 0.009
254 21.17 0.10 0.056 0.047 ( 0.050) 0.009
255 21.25 0.10 0.056 0.047 ( 0.050) 0.009
256 21.33 0.07 0.037 ( 0.047) 0.033 0.004
257 21.42 0.07 0.037 ( 0.046) 0.033 0.004
258 21.50 0.07 0.037 ( 0.046) 0.033 0.004
259 21.58 0.10 0.056 0.046 ( 0.050) 0.010
260 21.67 0.10 0.056 0.046 ( 0.050) 0.010
261 21.75 0.10 0.056 0.046 ( 0.050) 0.010
262 21.83 0.07 0.037 ( 0.046) 0.033 0.004
263 21.92 0.07 0.037 ( 0.045) 0.033 0.004
264 22.00 0.07 0.037 ( 0.045) 0.033 0.004
265 22.08 0.10 0.056 0.045 ( 0.050) 0.011
266 22.17 0.10 0.056 0.045 ( 0.050) 0.011
267 22.25 0.10 0.056 0.045 ( 0.050) 0.011
268 22.33 0.07 0.037 ( 0.045) 0.033 0.004
269 22.42 0.07 0.037 ( 0.045) 0.033 0.004
270 22.50 0.07 0.037 ( 0.044) 0.033 0.004
271 22.58 0.07 0.037 ( 0.044) 0.033 0.004
272 22.67 0.07 0.037 ( 0.044) 0.033 0.004
273 22.75 0.07 0.037 ( 0.044) 0.033 0.004
274 22.83 0.07 0.037 ( 0.044) 0.033 0.004
275 22.92 0.07 0.037 ( 0.044) 0.033 0.004
276 23.00 0.07 0.037 ( 0.044) 0.033 0.004
277 23.08 0.07 0.037 ( 0.044) 0.033 0.004
278 23.17 0.07 0.037 ( 0.044) 0.033 0.004
279 23.25 0.07 0.037 ( 0.043) 0.033 0.004
280 23.33 0.07 0.037 ( 0.043) 0.033 0.004
281 23.42 0.07 0.037 ( 0.043) 0.033 0.004
282 23.50 0.07 0.037 ( 0.043) 0.033 0.004
283 23.58 0.07 0.037 ( 0.043) 0.033 0.004
284 23.67 0.07 0.037 ( 0.043) 0.033 0.004
285 23.75 0.07 0.037 ( 0.043) 0.033 0.004
286 23.83 0.07 0.037 ( 0.043) 0.033 0.004
287 23.92 0.07 0.037 ( 0.043) 0.033 0.004
288 24.00 0.07 0.037 ( 0.043) 0.033 0.004
(Loss Rate Not Used)
Sum = 100.0 Sum = 35.1
Flood volume = Effective rainfall 2.92(In)
times area 5.5(Ac.)/[(In)/(Ft.)] = 1.3(Ac.Ft)
Total soil loss = 1.72(In)
Total soil loss = 0.791(Ac.Ft)
Total rainfall = 4.64(In)
Flood volume = 58694.6 Cubic Feet
Total soil loss = 34447.3 Cubic Feet
F.1.d
Packet Pg. 1300 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) ------------------------------------------------------------------ --
Peak flow rate of this hydrograph = 3.107(CFS)
------------------------------------------------------------------ --
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++
24 - H O U R S T O R M
R u n o f f H y d r o g r a p h
------------------------------------------------------------------ --
Hydrograph in 5 Minute intervals ((CFS))
------------------------------------------------------------------ --
Time(h+m) Volume Ac.Ft Q(CFS) 0 2.5 5.0 7.5

10.0 ----------------------------------------------------------------------- 0+ 5 0.0000 0.01 Q | | |
|
0+10 0.0002 0.02 Q | | |
|
0+15 0.0003 0.02 Q | | |
|
0+20 0.0005 0.02 Q | | |
|
0+25 0.0007 0.03 Q | | |
|
0+30 0.0009 0.03 Q | | |
|
0+35 0.0011 0.03 Q | | |
|
0+40 0.0013 0.03 Q | | |
|
0+45 0.0015 0.03 Q | | |
|
0+50 0.0018 0.03 Q | | |
|
0+55 0.0020 0.04 Q | | |
|
1+ 0 0.0023 0.04 Q | | |
|
1+ 5 0.0026 0.04 Q | | |
|
1+10 0.0028 0.03 Q | | |
|
1+15 0.0030 0.03 Q | | |
|
1+20 0.0032 0.03 Q | | |
|
1+25 0.0035 0.03 Q | | |
|
1+30 0.0037 0.03 Q | | |
|
1+35 0.0039 0.03 Q | | |
|
1+40 0.0041 0.03 Q | | |
|
1+45 0.0043 0.03 Q | | |
F.1.d
Packet Pg. 1301 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
1+50 0.0045 0.03 Q | | |
|
1+55 0.0048 0.04 Q | | |
|
2+ 0 0.0051 0.04 Q | | |
|
2+ 5 0.0054 0.04 Q | | |
|
2+10 0.0057 0.04 Q | | |
|
2+15 0.0060 0.04 Q | | |
|
2+20 0.0062 0.04 Q | | |
|
2+25 0.0065 0.04 Q | | |
|
2+30 0.0068 0.04 Q | | |
|
2+35 0.0071 0.04 Q | | |
|
2+40 0.0075 0.05 Q | | |
|
2+45 0.0078 0.05 Q | | |
|
2+50 0.0082 0.05 Q | | |
|
2+55 0.0085 0.05 Q | | |
|
3+ 0 0.0089 0.05 Q | | |
|
3+ 5 0.0093 0.05 Q | | |
|
3+10 0.0096 0.05 Q | | |
|
3+15 0.0100 0.05 Q | | |
|
3+20 0.0103 0.05 Q | | |
|
3+25 0.0107 0.05 Q | | |
|
3+30 0.0110 0.05 Q | | |
|
3+35 0.0114 0.05 Q | | |
|
3+40 0.0117 0.05 Q | | |
|
3+45 0.0121 0.05 Q | | |
|
3+50 0.0125 0.06 Q | | |
|
3+55 0.0129 0.06 Q | | |
|
4+ 0 0.0133 0.06 Q | | |
|
4+ 5 0.0138 0.06 Q | | |
|
4+10 0.0142 0.06 Q | | |
|
4+15 0.0146 0.06 Q | | |
F.1.d
Packet Pg. 1302 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
4+20 0.0151 0.07 Q | | |
|
4+25 0.0155 0.07 Q | | |
|
4+30 0.0160 0.07 Q | | |
|
4+35 0.0165 0.07 Q | | |
|
4+40 0.0170 0.07 Q | | |
|
4+45 0.0175 0.07 Q | | |
|
4+50 0.0182 0.10 Q | | |
|
4+55 0.0192 0.15 Q | | |
|
5+ 0 0.0203 0.16 Q | | |
|
5+ 5 0.0212 0.13 Q | | |
|
5+10 0.0217 0.08 Q | | |
|
5+15 0.0222 0.06 Q | | |
|
5+20 0.0226 0.07 Q | | |
|
5+25 0.0231 0.07 Q | | |
|
5+30 0.0236 0.07 Q | | |
|
5+35 0.0244 0.11 Q | | |
|
5+40 0.0255 0.17 Q | | |
|
5+45 0.0268 0.18 Q | | |
|
5+50 0.0281 0.19 Q | | |
|
5+55 0.0294 0.19 Q | | |
|
6+ 0 0.0307 0.19 Q | | |
|
6+ 5 0.0323 0.23 Q | | |
|
6+10 0.0343 0.29 |Q | | |
|
6+15 0.0364 0.30 |Q | | |
|
6+20 0.0385 0.31 |Q | | |
|
6+25 0.0407 0.31 |Q | | |
|
6+30 0.0428 0.31 |Q | | |
|
6+35 0.0453 0.35 |Q | | |
|
6+40 0.0481 0.41 |Q | | |
|
6+45 0.0510 0.42 |Q | | |
F.1.d
Packet Pg. 1303 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
6+50 0.0539 0.43 |Q | | |
|
6+55 0.0569 0.43 |Q | | |
|
7+ 0 0.0599 0.43 |Q | | |
|
7+ 5 0.0629 0.44 |Q | | |
|
7+10 0.0659 0.44 |Q | | |
|
7+15 0.0690 0.44 |QV | | |
|
7+20 0.0723 0.48 |QV | | |
|
7+25 0.0760 0.54 | Q | | |
|
7+30 0.0798 0.55 | Q | | |
|
7+35 0.0839 0.59 | Q | | |
|
7+40 0.0883 0.65 | Q | | |
|
7+45 0.0929 0.66 | Q | | |
|
7+50 0.0977 0.70 | Q | | |
|
7+55 0.1029 0.76 | Q | | |
|
8+ 0 0.1083 0.77 | Q | | |
|
8+ 5 0.1141 0.85 | Q | | |
|
8+10 0.1207 0.96 | Q | | |
|
8+15 0.1275 0.99 | Q | | |
|
8+20 0.1344 0.99 | Q | | |
|
8+25 0.1412 1.00 | QV | | |
|
8+30 0.1481 1.00 | QV | | |
|
8+35 0.1552 1.04 | Q | | |
|
8+40 0.1628 1.09 | Q | | |
|
8+45 0.1704 1.11 | QV | | |
|
8+50 0.1783 1.15 | QV | | |
|
8+55 0.1866 1.21 | QV | | |
|
9+ 0 0.1950 1.22 | QV | | |
|
9+ 5 0.2039 1.29 | QV | | |
|
9+10 0.2136 1.41 | QV | | |
|
9+15 0.2234 1.43 | QV | | |
F.1.d
Packet Pg. 1304 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
9+20 0.2336 1.47 | QV | | |
|
9+25 0.2441 1.53 | QV | | |
|
9+30 0.2548 1.54 | QV | | |
|
9+35 0.2657 1.58 | QV | | |
|
9+40 0.2770 1.64 | Q V | | |
|
9+45 0.2884 1.66 | Q V | | |
|
9+50 0.3000 1.69 | Q V | | |
|
9+55 0.3121 1.75 | Q V| | |
|
10+ 0 0.3243 1.77 | Q V| | |
|
10+ 5 0.3349 1.53 | Q V| | |
|
10+10 0.3428 1.15 | Q V | |
|
10+15 0.3502 1.07 | Q V | |
|
10+20 0.3574 1.06 | Q V | |
|
10+25 0.3647 1.06 | Q V | |
|
10+30 0.3720 1.06 | Q |V | |
|
10+35 0.3805 1.23 | Q |V | |
|
10+40 0.3909 1.51 | Q |V | |
|
10+45 0.4017 1.57 | Q |V | |
|
10+50 0.4126 1.58 | Q | V | |
|
10+55 0.4236 1.59 | Q | V | |
|
11+ 0 0.4345 1.59 | Q | V | |
|
11+ 5 0.4453 1.56 | Q | V | |
|
11+10 0.4557 1.51 | Q | V | |
|
11+15 0.4660 1.50 | Q | V | |
|
11+20 0.4763 1.50 | Q | V | |
|
11+25 0.4866 1.50 | Q | V | |
|
11+30 0.4970 1.50 | Q | V | |
|
11+35 0.5069 1.44 | Q | V | |
|
11+40 0.5160 1.33 | Q | V | |
|
11+45 0.5250 1.31 | Q | V | |
F.1.d
Packet Pg. 1305 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
11+50 0.5342 1.34 | Q | V | |
|
11+55 0.5438 1.40 | Q | V | |
|
12+ 0 0.5535 1.41 | Q | V | |
|
12+ 5 0.5649 1.65 | Q | V | |
|
12+10 0.5790 2.04 | Q | V | |
|
12+15 0.5936 2.12 | Q | V | |
|
12+20 0.6086 2.17 | Q | V | |
|
12+25 0.6240 2.24 | Q | V | |
|
12+30 0.6395 2.25 | Q| V | |
|
12+35 0.6555 2.32 | Q| V| |
|
12+40 0.6723 2.44 | Q| V| |
|
12+45 0.6892 2.46 | Q| V |
|
12+50 0.7064 2.50 | Q V |
|
12+55 0.7241 2.56 | Q |V |
|
13+ 0 0.7418 2.57 | Q | V |
|
13+ 5 0.7607 2.75 | Q | V |
|
13+10 0.7816 3.03 | | Q | V |
|
13+15 0.8028 3.09 | | Q | V |
|
13+20 0.8242 3.10 | | Q | V |
|
13+25 0.8456 3.11 | | Q | V |
|
13+30 0.8670 3.11 | | Q | V |
|
13+35 0.8858 2.74 | Q | V |
|
13+40 0.9005 2.13 | Q | | V |
|
13+45 0.9143 2.01 | Q | | V |
|
13+50 0.9280 1.98 | Q | | V |
|
13+55 0.9416 1.98 | Q | | V |
|
14+ 0 0.9552 1.98 | Q | | V |
|
14+ 5 0.9698 2.12 | Q | | V |
|
14+10 0.9860 2.34 | Q| | V|
|
14+15 1.0024 2.39 | Q| | V|
F.1.d
Packet Pg. 1306 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
14+20 1.0187 2.37 | Q| | V
|
14+25 1.0347 2.32 | Q| | V
|
14+30 1.0506 2.31 | Q| | |V
|
14+35 1.0664 2.31 | Q| | |V
|
14+40 1.0823 2.31 | Q| | | V
|
14+45 1.0982 2.31 | Q| | | V
|
14+50 1.1139 2.28 | Q| | | V
|
14+55 1.1292 2.22 | Q | | | V
|
15+ 0 1.1445 2.21 | Q | | | V
|
15+ 5 1.1595 2.18 | Q | | | V
|
15+10 1.1742 2.13 | Q | | | V
|
15+15 1.1887 2.12 | Q | | | V
|
15+20 1.2031 2.08 | Q | | | V
|
15+25 1.2171 2.03 | Q | | | V
|
15+30 1.2310 2.02 | Q | | | V
|
15+35 1.2439 1.88 | Q | | | V
|
15+40 1.2554 1.66 | Q | | | V
|
15+45 1.2665 1.62 | Q | | | V
|
15+50 1.2776 1.61 | Q | | | V
|
15+55 1.2887 1.61 | Q | | | V
|
16+ 0 1.2999 1.61 | Q | | | V
|
16+ 5 1.3075 1.11 | Q | | | V
|
16+10 1.3094 0.28 |Q | | | V
|
16+15 1.3101 0.11 Q | | | V
|
16+20 1.3107 0.08 Q | | | V
|
16+25 1.3112 0.07 Q | | | V
|
16+30 1.3117 0.07 Q | | | V
|
16+35 1.3121 0.06 Q | | | V
|
16+40 1.3123 0.04 Q | | | V
|
16+45 1.3125 0.03 Q | | | V
F.1.d
Packet Pg. 1307 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
16+50 1.3127 0.03 Q | | | V
|
16+55 1.3130 0.03 Q | | | V
|
17+ 0 1.3132 0.03 Q | | | V
|
17+ 5 1.3137 0.08 Q | | | V
|
17+10 1.3149 0.17 Q | | |
V|
17+15 1.3162 0.19 Q | | |
V|
17+20 1.3175 0.19 Q | | |
V|
17+25 1.3188 0.19 Q | | |
V|
17+30 1.3202 0.20 Q | | |
V|
17+35 1.3215 0.20 Q | | |
V|
17+40 1.3229 0.20 Q | | |
V|
17+45 1.3243 0.20 Q | | |
V|
17+50 1.3254 0.17 Q | | |
V|
17+55 1.3262 0.11 Q | | |
V|
18+ 0 1.3269 0.10 Q | | |
V|
18+ 5 1.3277 0.10 Q | | |
V|
18+10 1.3284 0.10 Q | | |
V|
18+15 1.3291 0.11 Q | | |
V|
18+20 1.3299 0.11 Q | | |
V|
18+25 1.3306 0.11 Q | | |
V|
18+30 1.3314 0.11 Q | | |
V|
18+35 1.3320 0.09 Q | | |
V|
18+40 1.3322 0.04 Q | | |
V|
18+45 1.3325 0.03 Q | | |
V|
18+50 1.3327 0.03 Q | | |
V|
18+55 1.3328 0.02 Q | | |
V|
19+ 0 1.3330 0.02 Q | | |
V|
19+ 5 1.3331 0.02 Q | | |
V|
19+10 1.3333 0.03 Q | | |
V|
19+15 1.3335 0.03 Q | | |
F.1.d
Packet Pg. 1308 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
19+20 1.3340 0.06 Q | | |
V|
19+25 1.3348 0.11 Q | | |
V|
19+30 1.3356 0.12 Q | | |
V|
19+35 1.3363 0.10 Q | | |
V|
19+40 1.3366 0.04 Q | | |
V|
19+45 1.3368 0.03 Q | | |
V|
19+50 1.3370 0.03 Q | | |
V|
19+55 1.3372 0.02 Q | | |
V|
20+ 0 1.3373 0.02 Q | | |
V|
20+ 5 1.3375 0.03 Q | | |
V|
20+10 1.3377 0.03 Q | | |
V|
20+15 1.3379 0.03 Q | | |
V|
20+20 1.3382 0.04 Q | | |
V|
20+25 1.3384 0.04 Q | | |
V|
20+30 1.3387 0.04 Q | | |
V|
20+35 1.3390 0.04 Q | | |
V|
20+40 1.3393 0.04 Q | | |
V|
20+45 1.3396 0.04 Q | | |
V|
20+50 1.3398 0.04 Q | | |
V|
20+55 1.3400 0.02 Q | | |
V|
21+ 0 1.3401 0.02 Q | | |
V|
21+ 5 1.3403 0.03 Q | | |
V|
21+10 1.3406 0.04 Q | | |
V|
21+15 1.3410 0.05 Q | | |
V|
21+20 1.3412 0.04 Q | | |
V|
21+25 1.3414 0.02 Q | | |
V|
21+30 1.3415 0.02 Q | | |
V|
21+35 1.3418 0.03 Q | | |
V|
21+40 1.3421 0.05 Q | | |
V|
21+45 1.3425 0.05 Q | | |
F.1.d
Packet Pg. 1309 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) V|
21+50 1.3428 0.04 Q | | |
V|
21+55 1.3429 0.03 Q | | |
V|
22+ 0 1.3431 0.02 Q | | |
V|
22+ 5 1.3433 0.03 Q | | |
V|
22+10 1.3437 0.05 Q | | |
V|
22+15 1.3441 0.06 Q | | |
V|
22+20 1.3444 0.05 Q | | |
V|
22+25 1.3446 0.03 Q | | |
V|
22+30 1.3448 0.02 Q | | |
V|
22+35 1.3449 0.02 Q | | |
V|
22+40 1.3450 0.02 Q | | |
V|
22+45 1.3452 0.02 Q | | |
V|
22+50 1.3453 0.02 Q | | |
V|
22+55 1.3455 0.02 Q | | |
V|
23+ 0 1.3456 0.02 Q | | |
V|
23+ 5 1.3458 0.02 Q | | |
V|
23+10 1.3459 0.02 Q | | |
V|
23+15 1.3460 0.02 Q | | |
V|
23+20 1.3462 0.02 Q | | |
V|
23+25 1.3463 0.02 Q | | |
V|
23+30 1.3465 0.02 Q | | |
V|
23+35 1.3466 0.02 Q | | |
V|
23+40 1.3468 0.02 Q | | |
V|
23+45 1.3469 0.02 Q | | |
V|
23+50 1.3470 0.02 Q | | |
V|
23+55 1.3472 0.02 Q | | |
V|
24+ 0 1.3473 0.02 Q | | |
V|
24+ 5 1.3474 0.01 Q | | |
V|
24+10 1.3474 0.00 Q | | |
V|
24+15 1.3474 0.00 Q | | |
F.1.d
Packet Pg. 1310 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33preb12.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Predevlopment Conditions
Unit Hydrograph Runoff
------------------------------------------------------------------ --
Drainage Area = 8.04(Ac.) = 0.013 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 8.04(Ac.) =

0.013 Sq. Mi.

Length along longest watercourse = 1083.00(Ft.)
Length along longest watercourse measured to centroid = 476.00 (Ft.)
Length along longest watercourse = 0.205 Mi.

Length along longest watercourse measured to centroid = 0.090 Mi.

Difference in elevation = 110.00(Ft.)
Slope along watercourse = 536.2881 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.064 Hr.

Lag time = 3.83 Min.
25% of lag time = 0.96 Min.
40% of lag time = 1.53 Min.

Unit time = 5.00 Min.

Duration of storm = 1 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1311 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

8.04 0.47 3.75
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

8.04 1.19 9.57
STORM EVENT (YEAR) = 2.00
Area Averaged 2-Year Rainfall = 0.466(In)
Area Averaged 100-Year Rainfall = 1.190(In)
Point rain (area averaged) = 0.466(In)
Areal adjustment factor = 99.99 %
Adjusted average point rain = 0.466(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

8.040 84.00 0.000
Total Area Entered = 8.04(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0003 0.04 Q | | |
|
0+10 0.0013 0.16 Q | | |
|
0+15 0.0033 0.28 VQ | | |
|
0+20 0.0060 0.40 |Q | | |
|
0+25 0.0100 0.57 | Q | | |
|
0+30 0.0156 0.81 | Q | | |
|
0+35 0.0236 1.17 | QV | | |
F.1.d
Packet Pg. 1313 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
0+40 0.0348 1.62 | QV | | |
|
0+45 0.0537 2.75 | |Q | |
|
0+50 0.0961 6.15 | | |V Q |
|
0+55 0.1527 8.21 | | | | QV
|
1+ 0 0.1731 2.97 | |Q | | V
|
1+ 5 0.1792 0.88 | Q | | |
V|
1+10 0.1809 0.24 Q | | |
V|
1+15 0.1814 0.08 Q | | |
V|
1+20 0.1815 0.01 Q | | |
V|
1+25 0.1815 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1314 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33preb15.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Predevlopment Conditions
Unit Hydrograph Runoff
Area B
------------------------------------------------------------------ --
Drainage Area = 8.04(Ac.) = 0.013 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 8.04(Ac.) =

0.013 Sq. Mi.

Length along longest watercourse = 1083.00(Ft.)
Length along longest watercourse measured to centroid = 476.00 (Ft.)
Length along longest watercourse = 0.205 Mi.

Length along longest watercourse measured to centroid = 0.090 Mi.

Difference in elevation = 110.00(Ft.)
Slope along watercourse = 536.2881 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.064 Hr.

Lag time = 3.83 Min.
25% of lag time = 0.96 Min.
40% of lag time = 1.53 Min.

Unit time = 5.00 Min.

Duration of storm = 1 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1315 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

8.04 0.47 3.75
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

8.04 1.19 9.57
STORM EVENT (YEAR) = 5.00
Area Averaged 2-Year Rainfall = 0.466(In)
Area Averaged 100-Year Rainfall = 1.190(In)
Point rain (area averaged) = 0.636(In)
Areal adjustment factor = 99.99 %
Adjusted average point rain = 0.636(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

8.040 84.00 0.000
Total Area Entered = 8.04(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

20.0 ----------------------------------------------------------------------- 0+ 5 0.0007 0.11 Q | | |
|
0+10 0.0041 0.49 Q | | |
|
0+15 0.0102 0.89 |Q | | |
|
0+20 0.0179 1.11 | Q | | |
|
0+25 0.0272 1.36 | QV | | |
|
0+30 0.0389 1.69 | Q V | | |
|
0+35 0.0539 2.18 | Q V | | |
F.1.d
Packet Pg. 1317 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
0+40 0.0731 2.79 | Q V| | |
|
0+45 0.1030 4.34 | Q | V | |
|
0+50 0.1648 8.98 | | Q | V |
|
0+55 0.2460 11.79 | | | Q | V
|
1+ 0 0.2778 4.62 | Q| | | V
|
1+ 5 0.2888 1.60 | Q | | |
V|
1+10 0.2918 0.43 Q | | |
V|
1+15 0.2927 0.14 Q | | |
V|
1+20 0.2929 0.02 Q | | |
V|
1+25 0.2929 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1318 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33preb110
U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version 8.2 Study date 02/19/21 File: moval33preb110.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------------------------------------------------------------------------ Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
--------------------------------------------------------------------- English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
--------------------------------------------------------------------- Gateway Heights
Predevlopment Conditions
Unit Hydrograph Runoff
-------------------------------------------------------------------- Drainage Area = 8.04(Ac.) = 0.013 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 8.04(Ac.) =

0.013 Sq. Mi.

Length along longest watercourse = 1083.00(Ft.)
Length along longest watercourse measured to centroid = 476.00(Ft.) Length along longest watercourse = 0.205 Mi.

Length along longest watercourse measured to centroid = 0.090 Mi.

Difference in elevation = 110.00(Ft.)
Slope along watercourse = 536.2881 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.064 Hr.

Lag time = 3.83 Min.
25% of lag time = 0.96 Min.
40% of lag time = 1.53 Min.

Unit time = 5.00 Min.

Duration of storm = 1 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

8.04 0.47 3.75
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

8.04 1.19 9.57
STORM EVENT (YEAR) = 10.00
Area Averaged 2-Year Rainfall = 0.466(In)
Area Averaged 100-Year Rainfall = 1.190(In)

Page 1 ends

F.1.d
Packet Pg. 1319 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33preb110
Point rain (area averaged) = 0.764(In)
Areal adjustment factor = 99.99 %
Adjusted average point rain = 0.764(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

8.040 84.00 0.000
Total Area Entered = 8.04(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.) (In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000 0.198
Sum (F) = 0.198
Area averaged mean soil loss (F) (In/Hr) = 0.198
Minimum soil loss rate ((In/Hr)) = 0.099
(for 24 hour storm duration)
Soil low loss rate (decimal) = 0.900
--------------------------------------------------------------------- Slope of intensity-duration curve for a 1 hour storm =0.5500 ---------------------------------------------------------------------- U n i t H y d r o g r a p h
FOOTHILL S-Curve
-------------------------------------------------------------------- Unit Hydrograph Data --------------------------------------------------------------------- Unit time period Time % of lag Distribution Unit Hydrograph (hrs) Graph % (CFS)
--------------------------------------------------------------------- 1 0.083 130.523 24.817 2.011
2 0.167 261.045 55.614 4.506
3 0.250 391.568 14.211 1.151
4 0.333 522.090 3.889 0.315
5 0.417 652.613 1.032 0.084
6 0.500 783.135 0.438 0.035
Sum = 100.000 Sum= 8.103 ----------------------------------------------------------------------- The following loss rate calculations reflect use of the minimum calculated loss rate subtracted from the Storm Rain to produce the maximum Effective Rain value Unit Time Pattern Storm Rain Loss rate(In./Hr) Effective (Hr.) Percent (In/Hr) Max | Low (In/Hr)
1 0.08 3.30 0.302 0.198 ( 0.272) 0.104
2 0.17 4.20 0.385 0.198 ( 0.346) 0.187
3 0.25 4.40 0.403 0.198 ( 0.363) 0.205
4 0.33 4.80 0.440 0.198 ( 0.396) 0.242
5 0.42 5.20 0.477 0.198 ( 0.429) 0.278
6 0.50 6.20 0.568 0.198 ( 0.511) 0.370
7 0.58 6.80 0.623 0.198 ( 0.561) 0.425
8 0.67 8.80 0.807 0.198 ( 0.726) 0.608
9 0.75 13.90 1.274 0.198 ( 1.147) 1.076
10 0.83 31.40 2.878 0.198 ( 2.590) 2.680
11 0.92 7.20 0.660 0.198 ( 0.594) 0.462
12 1.00 3.80 0.348 0.198 ( 0.313) 0.150
(Loss Rate Not Used)
Sum = 100.0 Sum = 6.8
Flood volume = Effective rainfall 0.57(In)
times area 8.0(Ac.)/[(In)/(Ft.)] = 0.4(Ac.Ft)
Total soil loss = 0.20(In)

Page 2 ends

F.1.d
Packet Pg. 1320 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33preb110
Total soil loss = 0.133(Ac.Ft)
Total rainfall = 0.76(In)
Flood volume = 16501.4 Cubic Feet
Total soil loss = 5790.3 Cubic Feet
-------------------------------------------------------------------- Peak flow rate of this hydrograph = 14.490(CFS)
-------------------------------------------------------------------- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 - H O U R S T O R M
R u n o f f H y d r o g r a p h
-------------------------------------------------------------------- Hydrograph in 5 Minute intervals ((CFS))
-------------------------------------------------------------------- Time(h+m) Volume Ac.Ft Q(CFS) 0 5.0 10.0 15.0 20.0
----------------------------------------------------------------------- 0+ 5 0.0014 0.21 Q | | | |
0+10 0.0073 0.84 VQ | | | |
0+15 0.0167 1.37 |VQ | | | |
0+20 0.0281 1.66 | VQ | | | |
0+25 0.0416 1.95 | QV | | | |
0+30 0.0578 2.36 | Q V | | | |
0+35 0.0781 2.94 | Q V | | | |
0+40 0.1034 3.68 | Q V | | |
0+45 0.1416 5.54 | |Q V | | |
0+50 0.2182 11.12 | | | QV | |
0+55 0.3180 14.49 | | | Q | V |
1+ 0 0.3584 5.87 | |Q | | V |
1+ 5 0.3733 2.16 | Q | | | V|
1+10 0.3773 0.58 |Q | | | V|
1+15 0.3786 0.18 Q | | | V|
1+20 0.3788 0.03 Q | | | V|
1+25 0.3788 0.01 Q | | | V
-----------------------------------------------------------------------

Page 3 ends

F.1.d
Packet Pg. 1321 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33preb1100.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Predevlopment Conditions
Unit Hydrograph Runoff
Area B
------------------------------------------------------------------ --
Drainage Area = 8.04(Ac.) = 0.013 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 8.04(Ac.) =

0.013 Sq. Mi.

Length along longest watercourse = 1083.00(Ft.)
Length along longest watercourse measured to centroid = 476.00 (Ft.)
Length along longest watercourse = 0.205 Mi.

Length along longest watercourse measured to centroid = 0.090 Mi.

Difference in elevation = 110.00(Ft.)
Slope along watercourse = 536.2881 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.064 Hr.

Lag time = 3.83 Min.
25% of lag time = 0.96 Min.
40% of lag time = 1.53 Min.

Unit time = 5.00 Min.

Duration of storm = 1 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1322 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

8.04 0.47 3.75
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

8.04 1.19 9.57
STORM EVENT (YEAR) = 100.00
Area Averaged 2-Year Rainfall = 0.466(In)
Area Averaged 100-Year Rainfall = 1.190(In)
Point rain (area averaged) = 1.190(In)
Areal adjustment factor = 99.99 %
Adjusted average point rain = 1.190(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

8.040 84.00 0.000
Total Area Entered = 8.04(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-3 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 93.4 0.086 0.000 0.086 1.000

0.086
Sum (F) =

30.0 ----------------------------------------------------------------------- 0+ 5 0.0053 0.78 VQ | | |
|
0+10 0.0244 2.77 |V Q | | |
|
0+15 0.0510 3.85 | V Q | | |
|
0+20 0.0810 4.37 | VQ | | |
|
0+25 0.1144 4.84 | Q | | |
|
0+30 0.1522 5.49 | QV | | |
|
0+35 0.1962 6.39 | Q V | |
F.1.d
Packet Pg. 1324 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) |
0+40 0.2482 7.54 | Q V | |
|
0+45 0.3201 10.45 | | Q V | |
|
0+50 0.4519 19.13 | | | VQ |
|
0+55 0.6198 24.38 | | | | QV
|
1+ 0 0.6953 10.96 | | Q | | V
|
1+ 5 0.7279 4.73 | Q | | |
V|
1+10 0.7365 1.26 |Q | | |
V|
1+15 0.7392 0.38 Q | | |
V|
1+20 0.7396 0.07 Q | | |
V|
1+25 0.7398 0.02 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1325 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33preb32.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Predevlopment Conditions
Unit Hydrograph Runoff
Area B
------------------------------------------------------------------ --
Drainage Area = 8.04(Ac.) = 0.013 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 8.04(Ac.) =

0.013 Sq. Mi.

Length along longest watercourse = 1083.00(Ft.)
Length along longest watercourse measured to centroid = 476.00 (Ft.)
Length along longest watercourse = 0.205 Mi.

Length along longest watercourse measured to centroid = 0.090 Mi.

Difference in elevation = 110.00(Ft.)
Slope along watercourse = 536.2881 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.064 Hr.

Lag time = 3.83 Min.
25% of lag time = 0.96 Min.
40% of lag time = 1.53 Min.

Unit time = 5.00 Min.

Duration of storm = 3 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1326 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

8.04 0.80 6.42
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

8.04 1.89 15.20
STORM EVENT (YEAR) = 2.00
Area Averaged 2-Year Rainfall = 0.799(In)
Area Averaged 100-Year Rainfall = 1.890(In)
Point rain (area averaged) = 0.799(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 0.799(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

8.040 84.00 0.000
Total Area Entered = 8.04(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0002 0.03 Q | | |
|
0+10 0.0007 0.08 Q | | |
|
0+15 0.0014 0.09 Q | | |
|
0+20 0.0020 0.09 Q | | |
|
0+25 0.0028 0.11 Q | | |
|
0+30 0.0036 0.12 Q | | |
|
0+35 0.0045 0.13 Q | | |
|
0+40 0.0054 0.13 QV | | |
|
0+45 0.0063 0.14 QV | | |
|
0+50 0.0072 0.13 QV | | |
|
0+55 0.0081 0.12 QV | | |
|
1+ 0 0.0089 0.13 QV | | |
|
1+ 5 0.0099 0.14 Q V | | |
|
1+10 0.0111 0.16 Q V | | |
|
1+15 0.0122 0.17 Q V | | |
|
1+20 0.0134 0.17 Q V | | |
|
1+25 0.0149 0.22 Q V | | |
|
1+30 0.0175 0.38 |Q V | | |
|
1+35 0.0203 0.40 |Q V | | |
|
1+40 0.0228 0.35 |Q V | | |
|
1+45 0.0267 0.57 | Q V | | |
|
1+50 0.0323 0.82 | Q V | | |
|
1+55 0.0376 0.77 | Q V | | |
|
2+ 0 0.0424 0.70 | Q V | | |
|
2+ 5 0.0474 0.74 | Q V| | |
|
2+10 0.0543 1.00 | Q V | |
|
F.1.d
Packet Pg. 1329 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 2+15 0.0656 1.64 | Q | V | |
|
2+20 0.0781 1.82 | Q | V | |
|
2+25 0.0914 1.93 | Q | V | |
|
2+30 0.1143 3.32 | | Q | V |
|
2+35 0.1421 4.04 | | Q | V |
|
2+40 0.1706 4.13 | | Q | | V
|
2+45 0.1883 2.57 | Q | | V
|
2+50 0.1937 0.79 | Q | | |
V|
2+55 0.1959 0.32 |Q | | |
V|
3+ 0 0.1971 0.17 Q | | |
V|
3+ 5 0.1975 0.07 Q | | |
V|
3+10 0.1976 0.01 Q | | |
V|
3+15 0.1976 0.00 Q | | |
V|
3+20 0.1976 0.00 Q | | |
V|
3+25 0.1976 0.00 Q | | |
V
----------------------------------------------------------------------- F.1.d
Packet Pg. 1330 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version

8.2 Study date 11/09/21 File: moval33preb35.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++
------------------------------------------------------------------ ------
Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
------------------------------------------------------------------ ---
English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
------------------------------------------------------------------ ---
Gateway Heights
Predevlopment Conditions
Unit Hydrograph Runoff
Area B
------------------------------------------------------------------ --
Drainage Area = 8.04(Ac.) = 0.013 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 8.04(Ac.) =

0.013 Sq. Mi.

Length along longest watercourse = 1083.00(Ft.)
Length along longest watercourse measured to centroid = 476.00 (Ft.)
Length along longest watercourse = 0.205 Mi.

Length along longest watercourse measured to centroid = 0.090 Mi.

Difference in elevation = 110.00(Ft.)
Slope along watercourse = 536.2881 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.064 Hr.

Lag time = 3.83 Min.
25% of lag time = 0.96 Min.
40% of lag time = 1.53 Min.

Unit time = 5.00 Min.

Duration of storm = 3 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]
F.1.d
Packet Pg. 1331 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459)

8.04 0.80 6.42
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

8.04 1.89 15.20
STORM EVENT (YEAR) = 5.00
Area Averaged 2-Year Rainfall = 0.799(In)
Area Averaged 100-Year Rainfall = 1.890(In)
Point rain (area averaged) = 1.055(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 1.055(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

8.040 84.00 0.000
Total Area Entered = 8.04(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.)
(In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000

0.198
Sum (F) =

10.0 ----------------------------------------------------------------------- 0+ 5 0.0002 0.03 Q | | |
|
0+10 0.0010 0.11 Q | | |
|
0+15 0.0018 0.12 Q | | |
|
0+20 0.0027 0.13 Q | | |
|
0+25 0.0037 0.15 Q | | |
|
0+30 0.0049 0.17 Q | | |
|
0+35 0.0062 0.20 Q | | |
|
0+40 0.0075 0.19 Q | | |
|
0+45 0.0091 0.22 QV | | |
|
0+50 0.0105 0.21 QV | | |
|
0+55 0.0117 0.17 QV | | |
|
1+ 0 0.0130 0.18 QV | | |
|
1+ 5 0.0152 0.33 |Q | | |
|
1+10 0.0191 0.56 | Q | | |
|
1+15 0.0234 0.63 | Q | | |
|
1+20 0.0275 0.59 | QV | | |
|
1+25 0.0319 0.63 | QV | | |
|
1+30 0.0386 0.97 | QV | | |
|
1+35 0.0457 1.03 | QV | | |
|
1+40 0.0524 0.98 | Q V | | |
|
1+45 0.0612 1.27 | Q V | | |
|
1+50 0.0721 1.59 | Q V | | |
|
1+55 0.0826 1.52 | Q V| | |
|
2+ 0 0.0925 1.43 | Q |V | |
|
2+ 5 0.1027 1.49 | Q | V | |
|
2+10 0.1153 1.83 | Q | V | |
|
F.1.d
Packet Pg. 1334 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) 2+15 0.1338 2.68 | Q V | |
|
2+20 0.1539 2.92 | |Q V | |
|
2+25 0.1750 3.06 | | Q |V |
|
2+30 0.2087 4.90 | | Q| V |
|
2+35 0.2490 5.85 | | | Q V
|
2+40 0.2900 5.97 | | | Q | V
|
2+45 0.3165 3.84 | | Q | | V
|
2+50 0.3254 1.29 | Q | | |
V|
2+55 0.3290 0.52 | Q | | |
V|
3+ 0 0.3309 0.27 |Q | | |
V|
3+ 5 0.3316 0.10 Q | | |
V|
3+10 0.3317 0.02 Q | | |
V|
3+15 0.3317 0.01 Q | | |
V|
3+20 0.3318 0.00 Q | | |
V|
3+25 0.3318 0.00 Q | | |
V|
----------------------------------------------------------------------- F.1.d
Packet Pg. 1335 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33preb310
U n i t H y d r o g r a p h A n a l y s i s
Copyright (c) CIVILCADD/CIVILDESIGN, 1989 - 2012, Version 8.2 Study date 02/19/21 File: moval33preb310.out
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------------------------------------------------------------------------ Riverside County Synthetic Unit Hydrology Method
RCFC & WCD Manual date - April 1978
Program License Serial Number 6232
--------------------------------------------------------------------- English (in-lb) Input Units Used
English Rainfall Data (Inches) Input Values Used
English Units used in output format
--------------------------------------------------------------------- Gateway Heights
Predevlopment Conditions
Unit Hydrograph Runoff
-------------------------------------------------------------------- Drainage Area = 8.04(Ac.) = 0.013 Sq. Mi.

Drainage Area for Depth-Area Areal Adjustment = 8.04(Ac.) =

0.013 Sq. Mi.

Length along longest watercourse = 1083.00(Ft.)
Length along longest watercourse measured to centroid = 476.00(Ft.) Length along longest watercourse = 0.205 Mi.

Length along longest watercourse measured to centroid = 0.090 Mi.

Difference in elevation = 110.00(Ft.)
Slope along watercourse = 536.2881 Ft./Mi.

Average Manning's 'N' = 0.040
Lag time = 0.064 Hr.

Lag time = 3.83 Min.
25% of lag time = 0.96 Min.
40% of lag time = 1.53 Min.

Unit time = 5.00 Min.

Duration of storm = 3 Hour(s)
User Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

8.04 0.80 6.42
100 YEAR Area rainfall data:

Area(Ac.)[1] Rainfall(In)[2] Weighting[1*2]

8.04 1.89 15.20
STORM EVENT (YEAR) = 10.00
Area Averaged 2-Year Rainfall = 0.799(In)
Area Averaged 100-Year Rainfall = 1.890(In)

Page 1 ends

F.1.d
Packet Pg. 1336 Attachment: Appendicies H-L (6434 : Gateway Heights Tract 38459) moval33preb310
Point rain (area averaged) = 1.248(In)
Areal adjustment factor = 100.00 %
Adjusted average point rain = 1.248(In)
Sub-Area Data:

Area(Ac.) Runoff Index Impervious %

8.040 84.00 0.000
Total Area Entered = 8.04(Ac.)
RI RI Infil. Rate Impervious Adj. Infil. Rate Area% F
AMC2 AMC-2 (In/Hr) (Dec.%) (In/Hr) (Dec.) (In/Hr)

84.0 84.0 0.198 0.000 0.198 1.000 0.198
Sum (F) = 0.198
Area averaged mean soil loss (F) (In/Hr) = 0.198
Minimum soil loss rate ((In/Hr)) = 0.099
(for 24 hour storm duration)
Soil low loss rate (decimal) = 0.900
--------------------------------------------------------------------- U n i t H y d r o g r a p h
FOOTHILL S-Curve
-------------------------------------------------------------------- Unit Hydrograph Data
--------------------------------------------------------------------- Unit time period Time % of lag Distribution Unit Hydrograph (hrs) Graph % (CFS)
--------------------------------------------------------------------- 1 0.083 130.523 24.817 2.011
2 0.167 261.045 55.614 4.506
3 0.250 391.568 14.211 1.151
4 0.333 522.090 3.889 0.315
5 0.417 652.613 1.032 0.084
6 0.500 783.135 0.438 0.035
Sum = 100.000 Sum= 8.103
----------------------------------------------------------------------- The following loss rate calculations reflect use of the minimum calculated loss rate subtracted from the Storm Rain to produce the maximum Effective Rain value Unit Time Pattern Storm Rain Loss rate(In./Hr) Effective (Hr.) Percent (In/Hr) Max | Low (In/Hr)
1 0.08 1.30 0.195 ( 0.198) 0.175 0.019
2 0.17 1.30 0.195 ( 0.198) 0.175 0.019
3 0.25 1.10 0.165 ( 0.198) 0.148 0.016
4 0.33 1.50 0.225 0.198 ( 0.202) 0.026
5 0.42 1.50 0.225 0.198 ( 0.202) 0.026
6 0.50 1.80 0.270 0.198 ( 0.243) 0.071
7 0.58 1.50 0.225 0.198 ( 0.202) 0.026
8 0.67 1.80 0.270 0.198 ( 0.243) 0.071
9 0.75 1.80 0.270 0.198 ( 0.243) 0.071
10 0.83 1.50 0.225 0.198 ( 0.202) 0.026
11 0.92 1.60 0.240 0.198 ( 0.216) 0.041
12 1.00 1.80 0.270 0.198 ( 0.243) 0.071
13 1.08 2.20 0.329 0.198 ( 0.296) 0.131
14 1.17 2.20 0.329 0.198 ( 0.296) 0.131
15 1.25 2.20 0.329 0.198 ( 0.296) 0.131
16 1.33 2.00 0.299 0.198 ( 0.270) 0.101
17 1.42 2.60 0.389 0.198 ( 0.350) 0.191
18 1.50 2.70 0.404 0.198 ( 0.364) 0.206
19 1.58 2.40 0.359 0.198 ( 0.323) 0.161

Page 2 ends

Moreno Valley City CouncilDecember 19, 2023

Moreno Valley City Council
December 19, 2023