1 San Francisco Public Utilities Commission
Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
December 1, 2025
December 1, 2025, Reservoir Storage
2 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 276,400 360,360 83,960 76.7% 68.5%
Cherry 252,500 273,345 20,845 92.4% -
Eleanor 20,500 27,100 6,600 75.6% -
Water Bank 557,135 570,000 12,865 97.7% 98.0%
Total Tuolumne Storage 1,106,535 1,230,805 124,270 89.9% - Local System
Calaveras 68,953 96,670 27,717 71.3% -
San Antonio 49,183 53,266 4,083 92.3% -
Crystal Springs 52,409 68,953 16,544 76.0% -
San Andreas 15,614 18,675 3,061 83.6% -
Pilarcitos 1,745 3,125 1,380 55.8% -
Total Local Storage 187,904 240,689 52,785 78.1% -
Total System Storage 1,294,439 1,471,494 177,055 88.0% 77.9% Total without water bank 737,304 901,494 164,190 81.8% -
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
November 30, 2025
12-Month Median Total: 30.92 inches
Current Year Total: 7.68 inches
6 Annual Comparison:
Bay Area 7-station Precipitation Index
as of November 30, 2025
12-Month Median Total: 23.35 inches
Current Year Total: 6.75 inches
7 Annual Comparison:
Upcountry Snowpack
8 Water Available to the City
9 10
California Precipitation Forecast
Total Deliveries
11