1 Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
February 18, 2025
February 18, 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 269,600 360,360 90,760 74.8% 67.0%
Cherry 246,800 273,345 26,545 90.3% -
Eleanor 23,530 27,100 3,570 86.8% -
Water Bank 568,713 570,000 1,287 99.8% 98.8%
Total Tuolumne Storage 1,108,643 1,230,805 122,162 90.1% - Local System
Calaveras 76,870 96,670 19,800 79.5% -
San Antonio 46,420 53,266 6,846 87.1% -
Crystal Springs 47,681 68,953 21,272 69.1% -
San Andreas 15,510 18,675 3,165 83.1% -
Pilarcitos 2,346 3,125 779 75.1% -
Total Local Storage 188,827 240,689 51,862 78.5% -
Total System Storage 1,297,470 1,471,494 174,024 88.2% 80.4% Total without water bank 728,757 901,494 172,737 80.8% -
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
February 17, 2025
12-Month Median Total: 30.92 inches
Current Year Total: 18.77 inches
6 Annual Comparison:
Bay Area 7-station Precipitation Index
as of February 17, 2025
12-Month Median Total: 23.35 inches
Current Year Total: 17.48 inches
7 Annual Comparison:
Upcountry Snowpack
8 Water Available to the City
9 10
National Precipitation Forecast
Total Deliveries