Monticello Dam is a 304-foot (93 m) high solid curve dam in Napa County, California, United States developed somewhere in the range of 1953 and 1957. The dam seized Putah Creek to make Lake Berryessa in the Vaca Mountains.
Lake Berryessa is right now the seventh biggest man-made lake in California. Water from the repository basically supplies farming in the Sacramento Valley downstream. The dam is noted for its work of art, uncontrolled morning-brilliance type spillway. The breadth at the lip is 72 ft (22 m). Locally, the spillway is otherwise called the “Magnificence Hole”. [source]