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LLYN CELYN, TRYWERYN VALLEY

Site Details

© Copyright and database right 2019. All rights reserved. Ordnance Survey licence number 0100022206

NPRN 632

Map Reference SH84SE

Grid Reference SH87854010

Unitary (Local) Authority Gwynedd

Old County Merioneth

Community Llandderfel

Type of Site RESERVOIR

Broad Class WATER SUPPLY AND DRAINAGE

Period 20th Century, Modern

Site Description Built between 1960 and 1965, the regulating reservoir of Llyn Celyn was constructed as part of the Bala Lake Scheme in the River Dee catchment area to provide a constant supply of water for the City of Liverpool. An area of some 320ha was submerged under 81million cubic metres of water and the village of Capel Celyn and twelve farms were drowned by the reservoir, causing a great controversy at the time which still lingers today (see 'Cofiwch Dryweryn' wall, near Aberystwyth, nprn 305925).
Unusually for a reservoir intended for water supply, it also generates 4MW of electricity for the national grid.
RCAHMW, February 2011.

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