The water supply for our 2.7 million Bay Area customers is more reliable because of the completion of a crucial project in the East Bay. The SFPUC finished construction of the New Calaveras Dam to replace the seismically vulnerable 93-year-old dam. Calaveras Reservoir is our system’s largest Bay Area reservoir when full and provides local water storage when we need it.
** fun fact: We had to move 12 million cubic yards of earth and rock to make room for, and build the dam. That is enough to fill Levi’s Stadium from bottom to top four times.
The Calaveras Dam Replacement Project consists of building a new zoned earth and rock fill dam immediately downstream of the existing dam. The replacement dam will have a structural height of 220-feet high and is designed to accommodate a maximum credible earthquake on the Calaveras Fault. The dam will have a crest length of 1,210 feet, a base thickness of 1,180 feet, and crest thickness of 80 feet. The total volume of the dam will be approximately 3.5 million cubic yards. The replacement dam will restore the original reservoir capacity of 96,850 acre-feet, or 31 billion gallons of water. The storage is crucial to providing adequate water to our 2.7 million customers in the Bay Area.
Check out our time lapse video of our construction progress.