Almaden dam and reservoir
Almaden dam and reservoir is one of the six original reservoirs
in the county. It was completed in 1935. "Almaden" in Spanish
means "mineral" or "mine." In 1845 Andres Castillero
discovered a quicksilver (mercury) deposit in the area now known as
the Almaden hills. At one time, the New Almaden Mine was the largest
mercury-producing mine in the Americas. The dam and reservoir are located
in these same hills. The reservoir can store 1,586 acre-feet of water.
Its surface area is 57 acres. *
The Almaden Dam Program includes construction,
inspection and maintenance activities. More
information...

*Reservoir storage values have been updated
to reflect recent survey results.
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