Llwyn-on Reservoir
- Area
- 0.55 km²
- Tonight
- 6°CCloudy · Wind 19 km/h W
Llwyn-on Reservoir is a lake at 260 m above sea level in Wales, United Kingdom, 0.55 km² in area and 1.7 km long.
All facts
- Surface elevation
- 260 m
- Length
- 1.7 km
- Shoreline
- 4.2 km
Llwyn-on Reservoir in numbers
Shoreline from OpenStreetMap.
- Shoreline
- 4.2 km≈1 h to walk around
Llwyn-on Reservoir 3D map
Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 4 × 4 km
Llwyn-on 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.
Llwyn-on Reservoir elevation profile
West → east through the centre
Llwyn-on Reservoir weather
Tonight · Cloudy · 6°C (43°F) · 0.4 mm · Wind 19 km/h W
Llwyn-on Reservoir forecast for about 260 m.
- Tonight6°0.4 mm19 km/h W
- Today7°14°39.9 mm39 km/h S
- Sun7°10°0.8 mm41 km/h W
- Mon8°14°21.0 mm32 km/h S
- Tue9°12°4.0 mm30 km/h SW
- Wed9°13°1.2 mm22 km/h W
- Thu9°12°0.9 mm14 km/h S
- Fri9°12°6.8 mm18 km/h SE
- Sat6°10°0.2 mm14 km/h NW
- Sun4°8°0.3 mm21 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 23, 23:19 UTC.
Camping & parking near Llwyn-on Reservoir
Campsites, parking, trailheads and mountain huts mapped in OpenStreetMap around Llwyn-on Reservoir, nearest first, by straight-line distance. Check access, fees and permits locally.
Nearest parking
0.3 km ESE
Nearest caravan site
Grawen Caravan & Camping Park
Nearest campsite
5.6 km ENE
Nearest hut
BIrch Hall Bothy
All mapped places 8
| Place | Distance |
|---|---|
| Parking | 0.3 km ESE |
| Parking | 0.5 km NNE |
| Grawen Caravan & Camping ParkCaravan site | 1.1 km SE |
| Parking | 1.3 km NNW |
| Campsite | 5.6 km ENE |
| BIrch Hall BothyHut | 5.6 km NE |
| Campsite | 5.9 km ENE |
| The New InnCampsite | 7.8 km W |
Slope
Share of the 4 × 4 km view by steepness, from the 30 m model.
Mostly gentle: 91% of the view is under 15°.
- Steeper than 30°
- 1.0% of the 16 km² view
- Relief in view
- 239 m low point 221 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.
Where Llwyn-on Reservoir sits
- Region
- Wales60United Kingdom371Europe2,143
Nearby places
Pontsticill ReservoirLake↑5.2 km ENE
Pen y FanPeak · 886 m↑9.7 km N
Llyn Cwm LlwchLake↑10 km N
Talybont ReservoirLake↑12 km NE
Llyn FawrLake↑12 km SW
More 1
Llwyn-on Reservoir downloads: topographic map, heightmap, STL 3D model and DEM
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Print & wall
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GIS & GPS
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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 2025 (scene 2025-08-16)
- 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)
- Forecast
- Weather forecast from MET Norway (CC BY 4.0)