Lake Ströms Vattudal is about seventy kilometers long and extends from Svaningen in the west to a few kilometers east of Strömsund. At Strömsund the elongated lake narrows. This divides it into two lakes: Gårdsjön in the west and Russfjärden in the southeast. The valley and the lake are traversed by the Faxälven, a tributary of the Ångermanälven.