1 Drought Update
Steven R. Ritchie
Assistant General Manager, Water
January 31, 2022
January 31, 2022 Reservoir Storage
Reservoir
Current
Storage1,2,3
Maximum
Storage4
Available
Capacity
Percent of
Maximum
Storage
Normal
Percent of
Maximum
Storage5
(AF) (AF) (AF)
Tuolumne System
Hetch Hetchy 294,400 360,360 65,960 81.7% 68.9%
Cherry 240,100 268,800 28,700 89.3% -
Eleanor 21,520 21,495 0 100.0% -
Water Bank 337,700 570,000 232,300 59.2% 98.4%
Total Tuolumne Storage 893,720 1,220,655 326,960 73.2% - Local System
Calaveras 67,236 96,670 29,434 69.6% -
San Antonio 46,554 53,266 6,712 87.4% -
Crystal Springs 51,247 58,309 7,062 87.9% -
San Andreas 16,094 19,027 2,933 84.6% -
Pilarcitos 3,070 3,030 0 100.0% -
Total Local Storage 184,201 230,302 46,141 80.0% -
Total System Storage 1,077,921 1,450,957 373,101 74.3% 81.4% Total without water bank 740,221 880,957 140,801 84.0% -
Other
California
Reservoirs
California Drought Monitor
Hetch Hetchy Precipitation
5 Upcountry Snowpack
Water Available to the City
Tuolumne River Water Available
to the City
Upcountry 6-station Precipitation Index as of
January 30, 2022
Avg Annual Total: 36.68 inches
YTD Total: 18.67 inches
Bay Area 7-station Precipitation Index
as of January 30, 2022
Avg Annual Total: 22.80 inches
YTD Total: 19.90 inches
National Precipitation Forecast
Total Deliveries
Water Use Reduction Tracker
13 CUSTOMER GROUPS FY2019/2020
AVG. MGD
FY2021/2022
AVG. MGD % REDUCTION
San Francisco Customers 64.3 54.7 14.9%
Wholesale Customers 139.8 130.8 6.4%
TOTAL 204.1 185.5 9.1%
For the Period July 1- January 21