Llyn Trawsfynydd
Gwynedd, United Kingdom · built 1928
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, Llyn Tegid (Bala Lake) at 4.5 km2 (1, 100 acres).
Reservoir data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).