The lake lies 418 m (1,371 ft) above sea level; and has an area of about 93 km2 (36 sq mi).

The border with Sweden lies about 725 metres (0.5 mi) east of the lake.

The Røyrvikelva river flows into the north end of Limingen from the lake Vektaren, through a dam.

The water flows out through a tunnel to Røyrvikfoss Power Station, at the village of Røyrvik.

At the south end, near the village of Limingen in Lierne Municipality, the water flows out of the tunnel to the Tunnsjøen via the Tunnsjø Power Station, as well as to Linvasselv Power Station on the Swedish side.