Lake · Wales

Clywedog Reservoir

281 m922 ft

Area: 2.36 km²
Tonight: 6°CLight rain · Wind 20 km/h W

Clywedog Reservoir is a lake at 281 m above sea level in Wales, United Kingdom, 2.36 km² in area and 5.1 km long.

All facts

Surface elevation: 281 m
Length: 5.1 km
Shoreline: 23.0 km

Open the 3D view

Lake

Clywedog Reservoir in numbers

Shoreline from OpenStreetMap.

Shoreline: 23.0 km≈5¾ h to walk around

3D map

Clywedog Reservoir 3D map

Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 7.1 × 7.1 km

Surface

Vertical scale

Topographic map

Clywedog Reservoir terrain and contours

20 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.

Index contours every 100 mShowing west → east through the centre

Clywedog Reservoir elevation profile

West → east through the centre

Hover the profile to read elevation and distance.Tap or drag along the profile to read elevation and distance.

Weather

Clywedog Reservoir weather

Tonight · Light rain · 6°C (43°F) · 0.5 mm · Wind 20 km/h W

Clywedog Reservoir forecast for about 281 m.

Tonight6°0.5 mm20 km/h W
Today6°13°33.9 mm50 km/h W
Sun6°9°4.0 mm45 km/h W
Mon7°14°14.7 mm37 km/h SW
Tue8°10°5.1 mm37 km/h SW
Wed10°11°3.4 mm28 km/h W
Thu8°11°0.3 mm14 km/h S
Fri8°11°7.7 mm19 km/h SE
Sat5°9°0.5 mm17 km/h NW
Sun4°7°1.2 mm22 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

Camping & parking near Clywedog Reservoir

Campsites, parking, trailheads and mountain huts mapped in OpenStreetMap around Clywedog Reservoir, nearest first, by straight-line distance. Check access, fees and permits locally.

Nearest parking
1.7 km E
+2 more within 2.3 km
Directions Map
Nearest caravan site
Red Kite Touring
5.8 km ESE · +2 more within 6.9 km
Directions Map

All mapped places 6

Place	Distance
Parking	1.7 km E
Parking	1.8 km E
Parking	2.3 km SE
Red Kite TouringCaravan site	5.8 km ESE
Clywedog Riverside Holiday Home ParkCaravan site	6.0 km ESE
Caravan site	6.9 km ENE

Slope

Share of the 7.1 × 7.1 km view by steepness, from the 30 m model.

Mostly gentle: 74% of the view is under 15°.

Gentle, 0–15°

74.4%

Moderate, 15–30°

23.0%

Steep, 30–45°

2.5%

Cliffs, 45° and over

0.0%

Steeper than 30°: 2.5% of the 50 km² view
Relief in view: 330 m low point 166 m

Land cover

ESA WorldCover 10 m classification of the same area.

Grassland 70.5%Trees 24.6%Water 4.5%

Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.

Nearby summits

Named peaks within 3.5 km of Clywedog Reservoir.

Summit list 8

1Dinas445 m 0.2 km ENE
2Yr Allt403 m 1.3 km SSE
3Foel Fawr421 m 1.8 km N
4Bryn Y Tail403 m 1.9 km SE
5Banc-Y-Groes420 m 1.9 km W
6Bryn Mawr450 m 2.5 km SW
7Bryn-Y-Fan482 m 2.9 km E
8Mynydd Y Groes480 m 3.4 km WSW

Wildlife

Wildlife seen nearby

Sightings of the most-seen species on iNaturalist (research grade) within 3.5 km; 331 species recorded in all.

Sightings per species 6

Common heather12
Deer fern12
Fly Agaric9
Square Gooseneck Moss8
Lesser Swallow Prominent8
Broad buckler-fern8

Where it sits

Where Clywedog Reservoir sits

Nearby

Nearby places

More 1

Llyn MyngulLake28 km NW

Downloads

Clywedog 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

JPGClywedog Reservoir satellite image (JPEG)Sentinel-2 true-colour image of the same area, taken 2026-07-15.

3D printing & 3D apps

GIS & GPS

</>Embed this mapPaste this into your site to show the interactive 3D terrain, with a credit link back here.

<iframe src="https://topolu.com/embed/clywedog-reservoir" width="100%" height="480" style="border:0" loading="lazy" allowfullscreen title="3D terrain of Clywedog Reservoir"></iframe>
<p><a href="https://topolu.com/clywedog-reservoir" rel="nofollow">Topolu</a></p>

Free to use with credit: see the data sources

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)
Wildlife: iNaturalist community observations, counts only
Forecast: Weather forecast from MET Norway (CC BY 4.0)
Sources: Wikidata · Wikipedia

Clywedog Reservoir

West → east through the centre

Nearest parking

Nearest caravan site