Derwent Reservoir is the middle of three reservoirs in the Upper Derwent Valley in the north of Derbyshire, England. It lies approximately 10 mi from Glossop and 10 mi from Sheffield. The River Derwen
Derwent Reservoir in July 2007
Derwent Dam in full flow (11 July 2007)
Dam wall (16 March 2009)
The base of the dam (2001)