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Llyn Efyrnwy / Lake Vyrnwy
Reservoir
Lake Vyrnwy (Welsh: Llyn Efyrnwy, pronounced [ɛˈvərnʊɨ] or Llyn Llanwddyn) is a reservoir in Powys, Wales, built in the 1880s for Liverpool Corporation Waterworks to supply Liverpool with fresh water. It flooded the head of the Vyrnwy (Welsh: Afon Efyrnwy) valley and submerged the village of Llanwddyn. The Lake Vyrnwy Nature Reserve and Estate that surrounds the lake is jointly managed by the Royal Society for the Protection of Birds (RSPB) and Hafren Dyfrdwy and is a popular destination for ornithologists, cyclists and hikers.
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Weather at Llyn Efyrnwy / Lake Vyrnwy
43°F, Light drizzle · H 47° / L 38° · 92% chance of rain3-day forecast
Frequently asked questions
- Where is Llyn Efyrnwy / Lake Vyrnwy?
- Llyn Efyrnwy / Lake Vyrnwy is a reservoir in Wales.
- Can you swim at Llyn Efyrnwy / Lake Vyrnwy?
- There is no fixed answer for Llyn Efyrnwy / Lake Vyrnwy: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Llyn Efyrnwy / Lake Vyrnwy in Wales. Check current water conditions before you go, and follow posted signs and local guidance.
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Location & Contact
Wales
🏞️ Best times & visiting tips
- ›Check for boat launch facilities and fees
- ›Obtain required fishing licenses before arrival
- ›Be aware of lake-specific regulations and restrictions
- ›Monitor water quality reports before swimming
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