Garreg ddu reservoir, Elan Valley, mid Wales UK
Garreg ddu is one of the five Elan Valley reservoirs created from damming the Elan and Claerwen rivers within the Elan Valley in Mid Wales. The reservoirs, which were built by the Birmingham Corporation Water Department, provide clean drinking water for Birmingham in the West Midlands of England. The five lakes are the Claerwen, Craig-goch, Pen-y-garreg, Garreg-ddu, and Caban-coch. Water from the reservoirs is carried by gravity to Frankley Reservoir in Birmingham via the Elan aqueduct. Pumping is not required because the network drops 52 metres (171 ft) along its 73 miles (117 km) length from its source to Frankley. A gradient of 1:2300 maintains a flow of less than 2 miles per hour ( km/h); water takes two and a half to three days to reach aqueduct, which was started in 1896 and opened in 1906, crosses several valleys and features numerous brick tunnels, pipelines, and valve houses. The first reservoirs, including this one, were completed in the few years straddling the turn of the 20th century.
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Photo credit: © John Worrall / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ddu, distance, drought, flooded, garreg, hill, hills, hilly, lake, level, lupin, lupins, mid, overcast, peaceful, placid, reduced, reservoir, rural, summer, supply, valley, wales, water
