TMDL image

Water Quality Improvement Projects (TMDLs)

Chehalis River near Rainbow Falls State Park, Washington State.  Photo courtesy of Dustin Bilhimer, WA Department of Ecology.
Chehalis River near Rainbow Falls State Park

Water Quality Improvement Projects
Chehalis River Basin Area:
Related Information

Links to Ecology’s related information

Upper Chehalis River TMDL Webmap
Shows how TMDL allocations look on the landscape and provides information about current monitoring efforts by Ecology. Instructions for using the web map.

Chehalis Geographic Response Plan for spills
Shows how the Chehalis Basin is prepared to protect water quality and critical areas in the event of an oil or other toxic chemical spill.

Ecology publications pertaining to WRIA 22
Ecology publications pertaining to WRIA 23

Water Quality Story: Chehalis Basin Education Consortium: Educating Teachers, Students, and the Community
Ecology publication

Washington State Groundwater Assessment Program: Hydrology and Quality of Groundwater in the Centralia-Chehalis Area Surficial Aquifer
Report presenting the results of a 2003-05 hydrogeologic assessment of the Centralia-Chehalis area surficial aquifer.


Links to other related information

Chehalis Salmon Recovery Lead Entity
Learn more about this salmon recovery group

Washington Coast Sustainable Salmon Partnership (WCSSP)
Learn more about all salmon recovery groups on the coast

WA Department of Health Shellfish and National Sanitation and Shellfish Program (NSSP)
Find information about commercial and recreational shellfish harvest status, and how the health of consumers is protected

Water much cleaner in Chehalis basin
The Olympian newspaper article

EPA Water: Nonpoint Source Success Stories - Washington: Chehalis River
Chehalis River nonpoint success stories

Grays Harbor County Marine Resources Committee
Local workgroup that addresses marine issues in Grays Harbor

Forest Practice Rules
Find information about the Washington Forest Practices Act

Marine Spatial Planning
Find maps about marine resources in Grays Harbor and the coast

Habitat Work Schedule
Find information about individual salmon recovery projects

WRIA 22 and WRIA 23: Chehalis Basin and Nearby Drainages: Salmon Habitat Limiting Factors
WA State Conservation Commission



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Last updated March 2016