Snohomish River - Definition and Overview

The Snohomish River is a river which starts with the confluence of the Skykomish and Snoqualmie rivers at Monroe, Washington. It flows northwest entering Puget Sound between Everett, Washington and Marysville, Washington. At Snohomish, Washington, it is joined by the Pilchuck river. The river system drains the west side of the Cascade Mountains from Snoqualmie Pass north to beyond Stevens Pass.