1 Drought Conditions Update
Steven R. Ritchie
Assistant General Manager, Water
December 5, 2022
December 5, 2022 Reservoir Storage
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 244,900 360,360 115,460 68.0% 68.0%
Cherry 244,700 273,345 28,645 89.5% -
Eleanor 18,400 27,100 8,700 67.9% -
Water Bank 253,147 570,000 316,853 44.4% 98.5%
Total Tuolumne Storage 761,147 1,230,805 469,658 61.8% - Local System
Calaveras 56,932 96,670 39,738 58.9% -
San Antonio 44,456 53,266 8,810 83.5% -
Crystal Springs 51,735 58,309 6,574 88.7% -
San Andreas 16,164 19,027 2,863 85.0% -
Pilarcitos 2,153 3,030 877 71.1% -
Total Local Storage 171,440 230,302 58,862 74.4% -
Total System Storage 932,587 1,461,107 528,520 63.8% 78.6% Total without water bank 679,440 891,107 211,667 76.2% -
Other
California
Reservoirs
California Drought Monitor
Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
December 4, 2022
Avg Annual Total: 36.68 inches
YTD Total: 7.25 inches
Bay Area 7-station Precipitation Index
as of December 4, 2022
Avg Annual Total: 22.80 inches
YTD Total: 4.86 inches
Upcountry Snowpack
Water Available to the City
National Precipitation Forecast
Total Deliveries