1 Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
November 4, 2024
November 4, 2024 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 258,800 360,360 101,560 71.8% 73.1%
Cherry 244,400 273,345 28,945 89.4% -
Eleanor 15,140 27,100 11,960 55.9% -
Water Bank 570,000 570,000 0 100.0% 98.0%
Total Tuolumne Storage 1,088,340 1,230,805 142,465 88.4% - Local System
Calaveras 81,619 96,670 15,051 84.4% -
San Antonio 48,525 53,266 4,741 91.1% -
Crystal Springs 51,154 68,953 17,799 74.2% -
San Andreas 14,342 18,675 4,333 76.8% -
Pilarcitos 2,250 3,125 875 72.0% -
Total Local Storage 197,890 240,689 42,799 82.2% -
Total System Storage 1,286,230 1,471,494 185,264 87.4% 78.7% Total without water bank 716,230 901,494 185,264 79.4% -
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
November 3, 2024
12-Month Median Total: 30.92 inches
Current Year Total: 0.46 inches
6 Annual Comparison:
Bay Area 7-station Precipitation Index
as of November 3, 2024
12-Month Median Total: 23.35 inches
Current Year Total: 0.30 inches
7 Annual Comparison:
Water Available to the City
8 9
National Precipitation Forecast
Total Deliveries