Llyn Clywedog Dam Llanidloes, Llanidloes, Powys Wales

Llyn Clywedog Dam
Llanidloes, Powys
Trefeglwys, Powys
Wales
Coordinates 52°29′10″N 3°37′30″W
Construction of the dam started in 1963 and finished in 1967 after the passing of an Act of Parliament ordering its creation to help prevent flooding of the River Severn in winter and to maintain its water levels in the summer. Local opposition was strong against the construction of the reservoir as it would result in the flooding of much of the Clywedog valley and the drowning of 615 acres (2.5 km2) of agricultural land. On top of several disruptions and protests, during construction in 1966 a bomb was detonated within the construction site, setting work back by almost two months. The political extremist group Mudiad Amddiffyn Cymru (MAC) was widely suspected of carrying out the bombing
The reservoir was opened in 1967 and has been in continuous usage since then, generally filling with water over the winter months and gradually releasing it during the summer months. The reservoir is currently owned and operated by Severn Trent Water Limited with oversight and regulation by Natural Resources Wales. Clywedog Sailing Club operates on the lake, and Powys County Council's Staylittle Outdoor Centre delivers a range of adventure education both on the water and in the surrounding area.
The dam operating plant runs self-sufficiently from a 500 kW hydro-electric turbine. The area around Clywedog dam is now a popular leisure destination offering scenic walks and wildlife watching. At the base of the dam lies the ruins of the Bryntail lead mine. In 2005 Natural Resources Wales installed an osprey nest platform near the reservoir. The nest has been in use by breeding ospreys since 2014; by the end of 2022, 22 osprey chicks had been raised on the site. A web camera was installed in 2020 enabling video of the nest to be viewed online. A trout fishery operates on the reservoir.
filmed With Dji Air s2