Water Supply Conditions Update
Steven Ritchie
Assistant General Manager, Water
June 16, 2025
1 Current Reservoir Storage
2 Storage as of:
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 360,200 360,360 160 100.0% 99.2%
Cherry 268,800 273,345 4,545 98.3% -
Eleanor 26,580 27,100 520 98.1% -
Water Bank 570,000 570,000 0 100.0% 100.0%
Total Tuolumne Storage 1,225,580 1,230,805 5,225 99.6% - Local System
Calaveras 75,971 96,670 20,699 78.6% -
San Antonio 48,416 53,266 4,850 90.9% -
Crystal Springs 44,075 68,953 24,878 63.9% -
San Andreas 15,948 18,675 2,727 85.4% -
Pilarcitos 1,947 3,125 1,178 62.3% -
Total Local Storage 186,357 240,689 54,332 77.4% -
Total System Storage 1,411,937 1,471,494 59,557 96.0% 86.4% Total without water bank 841,937 901,494 59,557 93.4% -
16-Jun-2025
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
June 15, 2025
12-Month Median Total: 30.92 inches
Current Year Total: 28.85 inches
6 Annual Comparison:
Bay Area 7-station Precipitation Index
as of June 15, 2025
12-Month Median Total: 23.35 inches
Current Year Total: 22.63 inches
7 Annual Comparison:
Upcountry Snowpack
8 Water Available to the City
9 Tuolumne River Water Available
to the City
10 California
Precipitation
Forecast
11 Total Deliveries
12