How important is the dam in the context of California water supply?
Hetch Hetchy holds less than 1 percent of all stored water in California, and supplies less than one percent of California’s water. The San Francisco Public Utilities Commission (SFPUC) stores less than 20% of the water it manages in Hetch Hetchy reservoir. The remaining 80% is stored in 8 other reservoirs. Since the water stored at Hetch Hetchy could easily be stored elsewhere in an enlarged Don Pedro Reservoir, at Calaveras Reservoir in the Bay Area, or underground), removal of the dam would have virtually no impact on the water supplies of the Bay Area.
