1 Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
March 3, 2025
March 3, 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 280,800 360,360 79,560 77.9% 65.4%
Cherry 245,300 273,345 28,045 89.7% -
Eleanor 23,780 27,100 3,320 87.7% -
Water Bank 559,072 570,000 10,928 98.1% 99.1%
Total Tuolumne Storage 1,108,952 1,230,805 121,853 90.1% - Local System
Calaveras 75,334 96,670 21,336 77.9% -
San Antonio 45,364 53,266 7,902 85.2% -
Crystal Springs 45,282 68,953 23,671 65.7% -
San Andreas 15,637 18,675 3,038 83.7% -
Pilarcitos 2,244 3,125 881 71.8% -
Total Local Storage 183,861 240,689 56,828 76.4% -
Total System Storage 1,292,813 1,471,494 178,681 87.9% 80.5% Total without water bank 733,741 901,494 167,753 81.4% -
1 Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
March 2, 2025
12-Month Median Total: 30.92 inches
Current Year Total: 19.59 inches
6 Annual Comparison:
Bay Area 7-station Precipitation Index
as of March 2, 2025
12-Month Median Total: 23.35 inches
Current Year Total: 18.10 inches
7 Annual Comparison:
Upcountry Snowpack
8 Water Available to the City
9 10
National Precipitation Forecast
Total Deliveries