Tanygrisiau Dam

Tanygrisiau Dam

Tanygrisiau Dam

Date

1 December 2012
Location

Tanygrisiau, Blaenau Ffestiniog

SH 68338 44836; 52.98463°N, 3.96268°W

Information

The Afon Ystradau was dammed as part of the Ffestiniog pumped-storage hydroelectric scheme, which was completed in 1963. The resulting artificial lake, Llyn Ystradau, acts as the lower reservoir for the 360 MW power station. The gravity dam has a length of 549m, including the 79m spillway, and a maximum height of 12m.

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