1 Water Supply Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
February 5, 2024
February 5, 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 317,700 360,360 42,660 88.2% 68.2%
Cherry 250,300 273,345 23,045 91.6% -
Eleanor 24,040 27,100 3,060 88.7% -
Water Bank 557,396 570,000 12,604 97.8% 98.2%
Total Tuolumne Storage 1,149,436 1,230,805 81,369 93.4% - Local System
Calaveras 87,779 96,670 8,891 90.8% -
San Antonio 47,020 53,266 6,246 88.3% -
Crystal Springs 43,840 68,953 25,113 63.6% -
San Andreas 15,808 18,675 2,867 84.6% -
Pilarcitos 2,511 3,125 614 80.3% -
Total Local Storage 196,958 240,689 43,731 81.8% -
Total System Storage 1,346,394 1,471,494 125,100 91.5% 80.2% Total without water bank 788,998 901,494 112,496 87.5% -
Other
California
Reservoirs
3 California Drought Monitor
4 Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
February 4, 2024
Avg Annual Total: 36.68 inches
YTD Total: 14.12 inches
6 Bay Area 7-station Precipitation Index
as of February 4, 2024
Avg Annual Total: 22.80 inches
YTD Total: 17.20 inches
7 Upcountry Snowpack
8 Water Available to the City
9 10
National Precipitation Forecast
Total Deliveries