1 Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
February 20, 2024
February 20, 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 327,800 360,360 32,560 91.0% 66.8%
Cherry 248,800 273,345 24,545 91.0% -
Eleanor 24,070 27,100 3,030 88.8% -
Water Bank 570,000 570,000 0 100.0% 98.7%
Total Tuolumne Storage 1,170,670 1,230,805 60,135 95.1% - Local System
Calaveras 94,571 96,670 2,099 97.8% -
San Antonio 48,185 53,266 5,081 90.5% -
Crystal Springs 44,001 68,953 24,952 63.8% -
San Andreas 15,392 18,675 3,283 82.4% -
Pilarcitos 2,512 3,125 613 80.4% -
Total Local Storage 204,661 240,689 36,028 85.0% -
Total System Storage 1,375,331 1,471,494 96,163 93.5% 80.5% Total without water bank 805,331 901,494 96,163 89.3% -
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
February 19, 2024
Avg Annual Total: 36.68 inches
YTD Total: 18.62 inches
6 Bay Area 7-station Precipitation Index
as of February 18, 2024
Avg Annual Total: 22.80 inches
YTD Total: 19.91 inches
7 Upcountry Snowpack
8 Water Available to the City
9 10
National Precipitation Forecast
Total Deliveries