1 San Francisco Public Utilities Commission
Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
October 20, 2025
October 20, 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 271,100 360,360 89,260 75.2% 75.6%
Cherry 249,400 273,345 23,945 91.2% -
Eleanor 16,760 27,100 10,340 61.8% -
Water Bank 563,446 570,000 6,554 98.9% 97.2%
Total Tuolumne Storage 1,100,706 1,230,805 130,099 89.4% - Local System
Calaveras 69,733 96,670 26,937 72.1% -
San Antonio 48,514 53,266 4,752 91.1% -
Crystal Springs 50,682 68,953 18,271 73.5% -
San Andreas 15,882 18,675 2,793 85.0% -
Pilarcitos 1,723 3,125 1,402 55.1% -
Total Local Storage 186,534 240,689 54,155 77.5% -
Total System Storage 1,287,240 1,471,494 184,254 87.5% 79.2% Total without water bank 723,794 901,494 177,700 80.3% -
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
October 19, 2025
12-Month Median Total: 30.92 inches
Current Year Total: 1.89 inches
6 Annual Comparison:
Bay Area 7-station Precipitation Index
as of October 19, 2025
12-Month Median Total: 23.35 inches
Current Year Total: 2.24 inches
7 Annual Comparison:
Upcountry Snowpack
8 Water Available to the City
9 10
California Precipitation Forecast
11 Upcountry Precipitation Forecast
Total Deliveries
12