1 Drought Update
Steven R. Ritchie
Assistant General Manager, Water
February 28, 2022
February 28, 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 310,300 360,360 50,060 86.1% 65.7%
Cherry 225,600 268,800 43,200 83.9% -
Eleanor 20,290 21,495 1,205 94.4% -
Water Bank 348,878 570,000 221,122 61.2% 99.3%
Total Tuolumne Storage 905,068 1,220,655 315,587 74.1% - L
ocal System
Calaveras 65,528 96,670 31,142 67.8% -
San Antonio 39,161 53,266 14,105 73.5% -
Crystal Springs 44,914 58,309 13,395 77.0% -
San Andreas 16,626 19,027 2,401 87.4% -
Pilarcitos 2,645 3,030 385 87.3% -
Total Local Storage 168,874 230,302 61,428 73.3% -
Total System Storage 1,073,942 1,450,957 377,015 74.0% 81.8% Total without water bank 725,064 880,957 155,893 82.3% -
Other
California
Reservoirs
California Drought Monitor
Hetch Hetchy Precipitation
5 Upcountry Snowpack
Water Available to the City
Tuolumne River Water Available
to the City
Upcountry 6-station Precipitation Index as of
February 27, 2022
Avg Annual Total: 36.68 inches
YTD Total: 19.07 inches
Bay Area 7-station Precipitation Index
as of February 27, 2022
Avg Annual Total: 22.80 inches
YTD Total: 20.12 inches
National Precipitation Forecast
Total Deliveries
Drought Tracker