1 Drought Conditions Update
Steve Ritchie
Assistant General Manager, Water
January 17, 2023
Current Reservoir Storage as of January 17, 2023
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 291,100 360,360 69,260 80.8% 67.9%
Cherry 228,229 273,345 45,116 83.5% -
Eleanor 22,580 27,100 4,520 83.3% -
Water Bank 570,000 570,000 0 100.0% 98.6%
Total Tuolumne Storage 1,111,909 1,230,805 118,896 90.3% - Local System
Calaveras 96,741 96,670 0 100.0% -
San Antonio 54,412 53,266 0 100.0% -
Crystal Springs 65,834 68,953 3,119 95.5% -
San Andreas 17,769 19,027 1,258 93.4% -
Pilarcitos 3,139 3,030 0 100.0% -
Total Local Storage 237,895 240,946 4,377 98.7% -
Total System Storage 1,349,804 1,471,751 123,273 91.7% 80.3% Total without water bank 779,804 901,751 123,273 86.5% -
Other
California
Reservoirs
California Drought Monitor
Hetch Hetchy Precipitation
5 Upcountry 6-station Precipitation Index as of
January 15, 2023
Avg Annual Total: 36.68 inches
YTD Total: 34.74 inches
Bay Area 7-station Precipitation Index
as of January 16, 2023
Avg Annual Total: 22.80 inches
YTD Total: 27.30 inches
Upcountry Snowpack
Water Available to the City
Tuolumne River Water Available
to the City
Hetch Hetchy Reservoir – January 2023
Total Deliveries
Total Deliveries
Drought Tracker
National
Precipitation
Forecast