Claerwen Reservoir
- Area
- 2.68 km²
- Tonight
- 5°CLight rain · Wind 20 km/h W
Claerwen Reservoir is a lake at 368 m above sea level in Wales, United Kingdom, 2.68 km² in area and 5.8 km long.
All facts
- Surface elevation
- 368 m
- Length
- 5.8 km
- Shoreline
- 18.2 km
Claerwen Reservoir in numbers
Shoreline from OpenStreetMap.
- Shoreline
- 18.2 km≈4½ h to walk around
Claerwen Reservoir 3D map
Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 7.8 × 7.8 km
Claerwen Reservoir terrain and contours
10 m contours from the Copernicus GLO-30 terrain model. Click two points on the map to draw your own cross-section.Tap two points on the map to draw your own cross-section.
Claerwen Reservoir elevation profile
West → east through the centre
Claerwen Reservoir weather
Tonight · Light rain · 5°C (41°F) · 0.7 mm · Wind 20 km/h W
Claerwen Reservoir forecast for about 368 m.
- Tonight5°0.7 mm20 km/h W
- Today5°12°35.6 mm50 km/h W
- Sun6°8°5.5 mm45 km/h W
- Mon7°13°19.7 mm37 km/h SW
- Tue8°10°5.6 mm37 km/h SW
- Wed9°11°1.8 mm27 km/h W
- Thu8°11°0.7 mm17 km/h SE
- Fri8°11°5.6 mm21 km/h SE
- Sat5°9°0.9 mm19 km/h NW
- Sun3°5°3.7 mm23 km/h NW
Forecast data: MET Norway, CC BY 4.0; daily low and high, precipitation total and strongest wind from the hourly data, model run Oct 24, 01:17 UTC.
Camping & parking near Claerwen Reservoir
Campsites, parking, trailheads and mountain huts mapped in OpenStreetMap around Claerwen Reservoir, nearest first, by straight-line distance. Check access, fees and permits locally.
Nearest parking
2.7 km ESE
Nearest hut
Moel Prysgau
All mapped places 6
| Place | Distance |
|---|---|
| Parking | 2.7 km ESE |
| Parking | 2.8 km SE |
| Parking | 5.7 km ENE |
| Moel PrysgauHut | 5.8 km SW |
| Bothi ClaerdduHut | 6.6 km WNW |
| Lluest Cwmbach BothyHut | 7.5 km NE |
Slope
Share of the 7.8 × 7.8 km view by steepness, from the 30 m model.
Mostly gentle: 88% of the view is under 15°.
- Steeper than 30°
- 0.6% of the 61 km² view
- Relief in view
- 286 m low point 281 m
Land cover
ESA WorldCover 10 m classification of the same area.
Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.
Wildlife seen nearby
Sightings of the most-seen species on iNaturalist (research grade) within 3.9 km; 29 species recorded in all.
Sightings per species 6
- Red Kite3
- Common Raven2
- Large Skipper2
- Wall-rue2
- Fox Moth2
- Meadow Waxcap2
Where Claerwen Reservoir sits
- Region
- Wales60United Kingdom371Europe2,143
Nearby places
Claerwen Reservoir downloads: topographic map, heightmap, STL 3D model and DEM
Free files made in your browser from this page's terrain data. No sign-up; credit the sources below.
Print & wall
3D printing & 3D apps
GIS & GPS
Free to use with credit: see the data sources
Data sources
- Terrain
- Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The European Union, ESA, DLR and Airbus incur no liability for any use of this data and do not endorse this service.
- Imagery
- Contains modified Copernicus Sentinel data 2026 (scene 2026-07-15)
- Land cover
- © ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium
- Facts
- Wikidata (CC0)
- Camping & parking, Geometry
- © OpenStreetMap contributors (ODbL)
- Summits
- © OpenStreetMap contributors, via Overture Maps Foundation (ODbL)
- Wildlife
- iNaturalist community observations, counts only
- Forecast
- Weather forecast from MET Norway (CC BY 4.0)