Skip to content
Claerwen Reservoir - Photo 1
Photo: Claerwen dam and reservoir, Powys - geograph.org.uk - 3981206.jpg via Wikidata Q1429038 License

Claerwen Reservoir

Reservoir

Rainy today

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.

Interactive map not available

Weather at Claerwen Reservoir

42°F, Patchy rain nearby · H 44° / L 40° · 87% chance of rain
H: 44° L: 40°
Patchy rain nearby
Patchy rain nearby
42°
|
Feels like 32°
Precipitation
87%
Humidity
78%
Wind
24 mph
UV Index
0.3
Weather notes:
🏄Good for surfing/sailing🌧️Rain expected
12 AM
Mist
42°
3 AM
Light drizzle
44°
6 AM
Patchy rain nearby
42°
9 AM
Light rain shower
40°
12 PM
Light sleet
40°
3 PM
Patchy rain nearby
42°
6 PM
Patchy rain nearby
43°
9 PM
Patchy rain nearby
43°

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.

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
</> Embed this location on your site

Paste this snippet into your website to show a live badge for Claerwen Reservoir — free to use with the included credit link.