Powys Green Guide What's On Places for Nature

Lake Vyrnwy
Nature Reserve River Lake Oswestry
 

Lake Vyrnwy is a striking artificial reservoir nestled in Powys, mid‑Wales. Built between 1881 and 1888 by damming the River Vyrnwy valley, it was originally created to supply Liverpool with clean drinking water

Key highlights include:

• Victorian engineering marvel 💧 – The dam was the first large masonry structure of its kind in Britain, standing 44 m tall with a series of elegant stone arches and crowned by a captivating Gothic-style “straining tower”, which draws and filters water before directing it through a 110 km aqueduct to Liverpool.
• Drowned village and rebirth – The original village of Llanwddyn was submerged underwater, and a new settlement was built downstream for its displaced residents. A memorial church and obelisk honour the workers and families affected.
• Wildlife haven & outdoor paradise – Surrounding the reservoir is a 12 mile loop of roads and trails winding through forests, moorlands, and streams. It’s now designated a national nature reserve, Site of Special Scientific Interest, Special Protection Area, and Special Area of Conservation, and is a hotspot for birdwatchers, hikers, cyclists, and anglers
• Recreation & events – Visitors can enjoy sailing, walking Glyndŵr’s Way, and seasonal wildlife tours. The annual Lake Vyrnwy Half Marathon has been held each September since 1988