1 Drought Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
October 31, 2022
October 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 261,800 360,360 98,560 72.6% 73.8%
Cherry 242,000 273,345 31,345 88.5% -
Eleanor 17,850 27,100 9,250 65.9% -
Water Bank 256,775 570,000 313,225 45.0% 97.6%
Total Tuolumne Storage 778,425 1,230,805 452,380 63.2% - Local System
Calaveras 57,008 96,670 39,662 59.0% -
San Antonio 40,288 53,266 12,978 75.6% -
Crystal Springs 52,058 58,309 6,251 89.3% -
San Andreas 17,047 19,027 1,980 89.6% -
Pilarcitos 2,186 3,030 844 72.1% -
Total Local Storage 168,587 230,302 61,715 73.2% -
Total System Storage 947,012 1,461,107 514,095 64.8% 79.7% Total without water bank 690,237 891,107 200,870 77.5% -
Other
California
Reservoirs
California Drought Monitor
Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
October 30, 2022
Avg Annual Total: 36.68 inches
YTD Total: 0.07 inches
Bay Area 7-station Precipitation Index
as of October 30, 2022
Avg Annual Total: 22.80 inches
YTD Total: 0.06 inches
Upcountry Snowpack
Water Available to the City
National Precipitation Forecast
Total Deliveries