| Lake Eiði | |
| Pushpin Map: | Faroe Islands |
| Location: | Near Eiði, Faroe Islands |
| Coords: | 62.2847°N -7.0547°W |
| Catchment: | 42.6km2 |
| Basin Countries: | Faroe Islands |
| Area: | 47ha (natural size) |
| Volume: | 17000000m2 |
| Elevation: | 129m-149mm (423feet-489feetm) |
Lake Eiði (Faroese: Eiðisvatn) is a lake on the island of Eysturoy in the Faroe Islands.[1]
Lake Eiði is located between the villages of Eiði and Ljósá.[1] It is the fifth-largest natural lake in the Faroe Islands, with a natural size of 47ha that has been increased to 1.14km2.[2] The size of the lake was increased by walls 22 and 13 m high, constructed by the SEV company in connection with the Eiði power plant, which uses the lake as a reservoir. Electricity production was started in 1987.[3] Two tunnels redirect water from adjacent valleys to Eiði.[4]