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Windscar Dam
River Don, Peak District, South Yorkshire
associated engineer
Mander, Raikes & Marshall
date  1972 - 1975
era  Modern  |  category  Dam/Reservoir  |  reference  SE152024
ICE reference number  HEW 2036
This is the first dam in Britain to use a membrane of asphalted concrete on the upstream face. The membrane is 120mm thick, formed in two layers.
The dam wall is 174ft long by 1706ft wide. Rock fill was used for the embankment, allowing steep faces that enabled its construction in a restricted space: 1.18 million cubic yards of rock was used.
The dam contains the headwaters of the River Don in the Peak District National Park. The reservoir supplies the Calder Valley, some 12 mile away.
Construction: Gleeson Civil Engineering Ltd
reference sources   CEH North
Location

Windscar Dam