Lower Columbia River Estuary: Chinook

Salmonid Habitat Restoration and Acquisition

Project ID00-1040 R
Recovery DomainsWillamette R. - Lower Columbia
Start Date03/17/2000
End Date02/28/2005
Last Edited04/19/2022
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Sea Resources used this funding to design, implement, and monitor a restoration project on the Chinook River estuary at river mile five of the Columbia River. The Chinook River is home to five species of anadromous salmonids: coho, Chinook, and chum salmon, steelhead and sea-run cutthroat trout. The estuary provides the last feeding and rearing habitat for juvenile Columbia Basin salmonids prior to entering the Pacific Ocean. Previous studies had identified sediment and organic material dynamics as the limiting factor in the watershed and had recommended tidegate removal, upland stabilization, and riparian enhancement as critical to salmon habitat improvement.
Sea Resources retained the consulting firm Foster and Wheeler to investigate the proposed tidegate removal. They established vegetation monitoring sites, sampled water quality, marked 31,000 juvenile coho, and monitored a smolt trap at the river mouth to determine pre-restoration migration patterns. The consultants also ran six models of different tidegate removal scenarios under normal high tide and 100-year storm event conditionn. They found that a 200-foot opening might be required to restore adequate tidal function in the estuary. Ultimately, the property bordering the main tidegate was not available for purchase and the tidegate replacement part of this project was not completed.
The project also included replacing a 5’ wooden culvert with a 12’ x 7’ metal culvert at Kalstron Creek on Chinook Valley Road. Engineering and construction was managed by Ducks Unlimited. In addition, Sea Resources worked with community members to allow public input into project planning.
Project partners included Ducks Unlimited, US Army Corps of Engineers, US Fish & Wildlife Service, Washington Department of Fish & Wildlife, Columbia Land Trust, and Natural Resource Conservation Service.

Project Benefit    

The goal of the project is to restore estuarine and nearshore conditions and processes in the marine environment. The objective of the project is to restore shoreline habitat diversity and function.


Metric Completed Originally

Funding Details

Report Total:$736,898

Project Map


1-Work Site #1    

  • Worksite Identifier: 1-Work Site #1
  • Start Date:
  • End Date:
Area Description

No Area Description data was found for this worksite.

Location Information

  • Basin: Lower Columbia
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: Washington
  • Recovery Domain: Willamette R. - Lower Columbia
  • Latitude: 46.30335114
  • Longitude: -123.96802171


  • Lower Columbia River Chinook Salmon ESU
  • Lower Columbia River Coho Salmon ESU
  • Southwest Washington Steelhead DPS
  • Columbia River Chum Salmon ESU




  • C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
    •      . . C.0.a Habitat restoration and acquisition funding 736,898.28
    •      . . C.0.b Length of stream treated/protected .20
    •      . . C.0.c
      Project identified in a Plan or Watershed Assessment
    •      . . C.0.d.1 Project Monitoring (LOV)
    •      . . C.0.d.2 Monitoring Location (LOV)
    •      . . C.9 Estuarine/Nearshore ProjectY (Y/N)
      •      . . . . C.9.a Estuarine/nearshore funding 736,898.28
      •      . . . . C.9.b Total amount of estuarine/nearshore area treated .0
      •      . . . . C.9.f.1 Estuarine culvert modification/removalY (Y/N)
        •      . . . . . . C.9.f.2 Culverts modified/removed to allow fish passage 1
        •      . . . . . . C.9.f.3 Acres opened to fish passage .1