1 San Francisco Public Utilities Commission
Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
January 5, 2026
January 5, 2026, 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 314,100 360,360 46,260 87.2% 66.7%
Cherry 243,500 273,345 29,845 89.1% -
Eleanor 24,590 27,100 2,510 90.7% -
Water Bank 570,000 570,000 0 100.0% 98.1%
Total Tuolumne Storage 1,152,190 1,230,805 78,615 93.6% - Local System
Calaveras 63,752 96,670 32,918 65.9% -
San Antonio 48,782 53,266 4,484 91.6% -
Crystal Springs 51,588 68,953 17,365 74.8% -
San Andreas 15,804 18,675 2,871 84.6% -
Pilarcitos 1,815 3,125 1,310 58.1% -
Total Local Storage 181,741 240,689 58,948 75.5% -
Total System Storage 1,333,931 1,471,494 137,563 90.7% 79.0% Total without water bank 763,931 901,494 137,563 84.7% -
1 Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
January 4, 2026
12-Month Median Total: 30.92 inches
Current Year Total: 17.67 inches
6 Annual Comparison:
Bay Area 7-station Precipitation Index
as of January 4, 2026
12-Month Median Total: 23.35 inches
Current Year Total: 14.32 inches
7 Annual Comparison:
Upcountry Snowpack
8 Water Available to the City
9 10
California Precipitation Forecast
11 Upcounty Precipitation Forecast
Total Deliveries
12