Llyn Trawsfynydd
| Llyn Trawsfynydd | |
|---|---|
Looking south | |
| Location | Gwynedd, North Wales |
| Coordinates | 52°54′40″N 3°56′40″W / 52.91111°N 3.94444°W |
| Type | reservoir |
| Primary outflows | Afon Prysor |
| Built | 1928 |
| Max. length | 4.39 km (2.73 mi) |
| Max. width | 2.3 km (1.4 mi) |
| Surface area | 4.8 km2 (1.9 sq mi) |
| Average depth | 4 m (13 ft) |
| Water volume | 40,390,000 m3 (1.426×109 cu ft) |
Llyn Trawsfynydd is a large artificial reservoir situated near the village of Trawsfynydd in Gwynedd, North Wales. With a total surface area of 4.8 km2 (1,200 acres) the reservoir is slightly more extensive than Wales's largest natural lake, Bala Lake at 4.5 km2 (1,100 acres).