Snoqualmie Watershed

Location of the Snoqualmie Watershed in Washington State.  Map courtesy of the EPA.The Snoqualmie watershed covers 677 square miles, and supports agriculture, forestry, rural residences, and urban development. From Snoqualmie Falls to its meeting with the Skykomish, the Snoqualmie River travels over 43 miles. Tributaries of the Snoqualmie produce more coho salmon than all of Oregon, and a growing population of Chinook salmon return to the Snohomish and Snoqualmie to spawn. Habitat in the basin has been affected by roads, agriculture, and flood control efforts, and much of the Snoqualmie River has little to no riparian vegetation.

EPA watershed profile:

Related WRIA: 07

All Puget Sound WRIAs


King County watershed profile

Snoqualmie Stewardship Program


Appendix 5. Map of Skykomish/Tye River Control Locations 2014

Protection and enhancement of riparian buffers in WRIA 7 through restoration and stewardship

The final report on a knotweed removal and native plant project from grant PO-00J08401 to King County DNR for the grant entitled: Protection and enhancement of the riparian buffers in WRIA 7 through restoration and stewardship.

The Snoqualmie River. Photo copyright King County.

King County rivers and streams

The diversity of streams in the county is a reflection of the diversity of its geography. From the small rivulets that begin high in the Cascade Mountains, to the brooks that flow gently across the lowlands, to the five major rivers of the county, there are over 4,800 kilometers (3,000 miles) of perennial streamcourses in King County.