The Devonport Leat reference article from the English Wikipedia on 24-Jul-2004
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Devonport Leat

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The Devonport leat was constructed in the 1790s to carry water from Dartmoor to the expanding dockyards at Devonport, England. It is fed by the West Dart, Blackabrook, and the Cowsic rivers. It now terminates at Burrator reservoir.

See also: leat