1 Drought Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
October 17, 2022
October 17, 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 270,900 360,360 89,460 75.2% 76.1%
Cherry 242,700 273,345 30,645 88.8% -
Eleanor 18,160 27,100 8,940 67.0% -
Water Bank 254,940 570,000 315,060 44.7% 98.0%
Total Tuolumne Storage 786,700 1,230,805 444,105 63.9% - Local System
Calaveras 57,631 96,670 39,039 59.6% -
San Antonio 41,403 53,266 11,863 77.7% -
Crystal Springs 51,576 58,309 6,733 88.5% -
San Andreas 17,080 19,027 1,947 89.8% -
Pilarcitos 2,248 3,030 782 74.2% -
Total Local Storage 169,938 230,302 60,364 73.8% -
Total System Storage 956,638 1,461,107 504,469 65.5% 79.2% Total without water bank 701,698 891,107 189,409 78.7% -
Other
California
Reservoirs
California Drought Monitor
Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
October 16, 2022
Avg Annual Total: 36.68 inches
YTD Total: 0.00 inches
Bay Area 7-station Precipitation Index
as of October 16, 2022
Avg Annual Total: 22.80 inches
YTD Total: 0.01 inches
Upcountry Snowpack – WY 2022
Water Available to the City
National Precipitation Forecast
Total Deliveries