Dewent Dam, Derwent Lane, Derwent, Derbyshire
The dam was built in 1902-16 to create the Derwent reservoir. Edward Sandeman was the Engineer. The dam is 1,110 feet long and 114 feet high. The base is 178 feet thick tapering to 10 feet at the top. It is one of three large reservoirs constructed by the Derwent Valley Water Board. They provide water for Sheffield, Derby, Nottingham and Leicester. There is a small museum in the west tower of the dam celebrating the connection to the Dambusters raid of WW2.