The Monticello Dam, Napa County, California, USA
It is a dam in the Napa, California, built between 1953 and 1957. It is a concrete arch with a height of 93 m and 312 m long and contains 249,000 cubic meters of concrete. The dam formed the largest lake in California, Lake Berryessa, with a capacity of 1.976 million cubic meters of water....