1 Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
March 4, 2024
March 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 322,000 360,360 38,360 89.4% 65.1%
Cherry 246,200 273,345 27,145 90.1% -
Eleanor 24,070 27,100 3,030 88.8% -
Water Bank 570,000 570,000 0 100.0% 99.3%
Total Tuolumne Storage 1,162,270 1,230,805 68,535 94.4% - Local System
Calaveras 95,123 96,670 1,547 98.4% -
San Antonio 49,566 53,266 3,700 93.1% -
Crystal Springs 44,654 68,953 24,299 64.8% -
San Andreas 14,969 18,675 3,706 80.2% -
Pilarcitos 2,527 3,125 598 80.9% -
Total Local Storage 206,839 240,689 33,850 85.9% -
Total System Storage 1,369,109 1,471,494 102,385 93.0% 79.7% Total without water bank 799,109 901,494 102,385 88.6% -
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
March 3, 2024
Avg Annual Total: 36.68 inches
YTD Total: 23.57 inches
6 Bay Area 7-station Precipitation Index
as of March 3, 2024
Avg Annual Total: 22.80 inches
YTD Total: 23.09 inches
7 Upcountry Snowpack
8 Water Available to the City
9 10
National Precipitation Forecast
Total Deliveries