Updated

Claerwen Reservoir
Reservoir
The Claerwen reservoir and dam in Powys, Wales, were the last additions to the Elan Valley Reservoirs system built to provide water for the increasing water demand of the city of Birmingham and the West Midlands. The dam is built mainly of concrete, with the exterior dam face in dressed stone. The dam is a gravity dam built upon solid rock foundations as the pressure of the reservoir behind should be in equilibrium with the total weight of the dam itself thus causing complete stability.
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Weather at Claerwen Reservoir
42°F, Patchy rain nearby · H 44° / L 40° · 87% chance of rain3-day forecast









Frequently asked questions
- Where is Claerwen Reservoir?
- Claerwen Reservoir is a reservoir in Wales.
- Can you swim at Claerwen Reservoir?
- There is no fixed answer for Claerwen Reservoir: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Claerwen Reservoir 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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