1Water Supply Conditions UpdateSteven R. RitchieAssistant General Manager, WaterJune 1, 2026 June 1, 2026 Reservoir Storage
2 ReservoirCurrent Storage1,2,3Maximum Storage4Available CapacityPercent of Maximum StorageNormal Percent of Maximum Storage5(AF) (AF) (AF)Tuolumne SystemHetch Hetchy 360,200 360,360 160 100.0%87.9%Cherry 265,600 273,345 7,745 97.2% -Eleanor 26,620 27,100 480 98.2% -Water Bank 570,000 570,000 0 100.0%100.0%Total Tuolumne Storage 1,222,420 1,230,805 8,385 99.3%-Local SystemCalaveras 58,137 96,670 38,533 60.1% -San Antonio 44,573 53,266 8,693 83.7% -Crystal Springs 46,179 68,953 22,774 67.0% -San Andreas 16,181 18,675 2,494 86.6% -Pilarcitos 1,948 3,125 1,177 62.3% -Total Local Storage 167,018 240,689 73,671 69.4%-Total System Storage1,389,438 1,471,494 82,05694.4% 84.1%Total without water bank819,438 901,494 82,05690.9%- Other California Reservoirs3
California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of May 31, 202612-Month Median Total: 30.92 inchesCurrent Year Total: 30.39 inches6Annual Comparison:
Bay Area 7-station Precipitation Index as of May 31, 202612-Month Median Total: 23.35 inchesCurrent Year Total: 25.93 inches7Annual Comparison:
Upcountry Snowpack
8 Water Available to the City
9 California PrecipitationForecast10
Upcountry PrecipitationForecast11
Total Deliveries
12