Spillway
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A spillway is a structure used to provide the controlled release of water from a dam or levee, typically downstream into the dammed river. In the United Kingdom, it may be known as an overflow channel
Chute spillway of Llyn Brianne dam in Wales
A stepped-chute baffled spillway of the Yeoman Hey Reservoir in the Peak District in England
Vegetation has grown in the bell-mouth spillway at Covão dos Conchos, Portugal, since its construction in 1955 such that it resembles a natural formation
Glory hole spillway in Lake Berryessa, California, in March 2017
Monticello Dam
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Monticello Dam is a 304-foot high concrete arch dam in Napa County, California, United States, constructed between 1953 and 1957. The dam impounded Putah Creek to create Lake Berryessa in the Vaca Mou
Spillway
…a spillway gate can result in the stranding of fish, and this is usually avoided. Gallery Lake Berryessa overflowing into the glory hole spillway at Monticello Dam A labyrinth spillway and a fish ladder (left) of the Hope Mills Dam in North Carolina Spillway with flip bucket at Burdekin Dam Water enters Hoover…
The top of the glory hole, 2017
The downstream face of the dam
The lower section of Lake Berryessa near Portuguese Canyon, seen looking upstream
Lake Berryessa overflowing into the Glory Hole spillway.