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Oroville Dam is an earthfill embankment dam on the Feather River east of the city of Oroville, California, in the Sierra Nevada foothills east of the Sacramento Valley. At 770 feet (235 m) high, it is the tallest dam in the U.S. [ 8 ] and serves mainly for water supply, hydroelectricity generation, and flood control.
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Water released from the Upper Feather River system flows into Lake Oroville, which is formed by the Oroville Dam several miles above the city of Oroville. [24] At 770 feet (230 m), Oroville is the tallest dam in the United States; [25] by volume it is the largest dam in California.
The Oroville Dam main spillway on August 5, 2018, during phase 2 repairs. The main spillway was successfully reconstructed by November 1, 2018. [46] According to its 2017–18 operations plan, the DWR maintained Lake Oroville at a lower than normal level to reduce the possibility that the spillway would have to be used the following winter. [44]
The Oroville dam footage shows the spillway flowing at 15,000 cubic feet per second.
Lake Oroville in Northern California, the state's second-largest reservoir, is at 100% of capacity after a historic rainy season and as a deep snowpack begins to melt.
In 1961, William Warne was appointed director of the department and oversaw the construction of a key facility in the operation of the State Water Project: Oroville Dam. The DWR and the United States Bureau of Reclamation also signed an agreement to design a joint reservoir in San Luis.
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