1 Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
February 03, 2025
February 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 251,900 360,360 108,460 69.9% 68.6%
Cherry 249,500 273,345 23,845 91.3% -
Eleanor 21,070 27,100 6,030 77.7% -
Water Bank 553,833 570,000 16,167 97.2% 98.1%
Total Tuolumne Storage 1,076,303 1,230,805 154,502 87.4% - Local System
Calaveras 68,496 96,670 28,174 70.9% -
San Antonio 45,797 53,266 7,469 86.0% -
Crystal Springs 44,256 68,953 24,697 64.2% -
San Andreas 15,967 18,675 2,708 85.5% -
Pilarcitos 2,364 3,125 761 75.6% -
Total Local Storage 176,880 240,689 63,809 73.5% -
Total System Storage 1,253,183 1,471,494 218,311 85.2% 80.3% Total without water bank 699,350 901,494 202,144 77.6% -
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
February 2, 2025
12-Month Median Total: 30.92 inches
Current Year Total: 11.71 inches
6 Annual Comparison:
Bay Area 7-station Precipitation Index
as of February 2, 2025
12-Month Median Total: 23.35 inches
Current Year Total: 11.85 inches
7 Annual Comparison:
Upcountry Snowpack
8 Water Available to the City
9 10
National Precipitation Forecast
Total Deliveries