LLYN CELYN, TRYWERYN VALLEY

Site Details

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
Modern;20th Century

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, nprn 305925).
Unusually for a reservoir intended for water supply, it also generates 4MW of electricity for the national grid.
B.A.Malaws, RCAHMW, 02 September 2009.