Somass River

Somass River is a river on Vancouver Island, in the Canadian province of British Columbia. Its drainage basin is 1412 km2 in size.

The river's name comes from a Nuu-chah-nulth word meaning "washing".

Course
The Stamp River flowing out of Great Central Lake and Sproat River join to form the Somass River, which flows generally southeast and south into Alberni Inlet and the harbour of Port Alberni. The river crosses Highway 4 outside of Port Alberni in Tseshaht First Nation territory. Several kilometres of the lower course of the river are tidal.