1 San Francisco Public Utilities Commission
Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
October 06, 2025
October 06, 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 278,900 360,360 81,460 77.4% 78.2%
Cherry 245,100 273,345 28,245 89.7% -
Eleanor 18,600 27,100 8,500 68.6% -
Water Bank 567,972 570,000 2,028 99.6% 99.5%
Total Tuolumne Storage 1,110,572 1,230,805 120,233 90.2% - Local System
Calaveras 70,416 96,670 26,254 72.8% -
San Antonio 48,033 53,266 5,233 90.2% -
Crystal Springs 49,739 68,953 19,214 72.1% -
San Andreas 15,637 18,675 3,038 83.7% -
Pilarcitos 1,741 3,125 1,384 55.7% -
Total Local Storage 185,566 240,689 55,123 77.1% -
Total System Storage 1,296,138 1,471,494 175,356 88.1% 79.3% Total without water bank 728,166 901,494 173,328 80.8% -
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
October 5, 2025
12-Month Median Total: 30.92 inches
Current Year Total: 0.47 inches
6 Annual Comparison:
Bay Area 7-station Precipitation Index
as of October 5, 2025
12-Month Median Total: 23.35 inches
Current Year Total: 0.54 inches
7 Annual Comparison:
8 California Precipitation Forecast
9 Upcountry Precipitation Forecast
Total Deliveries
10