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The Clywedog dam

Constructed between 1963 and 1967, the dam across the valley of the River Clywedog was constructed as part of a scheme to regulate the flow of the River Severn, into which the Clywedog flows at nearby Llanidloes. This functional concrete dam is 230 metres wide and, at 72 metres high, the tallest of its kind in Britain.

Llyn Clywedog

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