Gagnon CMZ Off-Channel Habitat Project

Salmonid Habitat Restoration and Acquisition

Project ID	05-1546 R
Recovery Domains	Upper Columbia River
Start Date	03/01/2006
End Date	11/30/2008
Year	2003
Status	Completed
Last Edited	05/01/2025

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Description

The CCNRD constructed the Gagnon Off-Channel Habitat Project providing off-channel refuge and rearing habitat for spring Chinook, endangered summer steelhead trout, and other salmonids. The site is located near RM 12.4 within the Lower Wenatchee River. This project was identified as part of the Wenatchee River Channel Migration Zone Study completed in the spring of 2004.

Within the lower Wenatchee River the construction of dams and roads, logging, channelization, and human use has resulted in the disconnection of off-channel habitat and floodplain side channels. The resulting lack of off-channel refuge, and forested riparian vegetation are the primary salmonid habitat limiting factors. The Gagnon Project addresses limiting factors by creating approximately .56 acres of off-channel high-flow (>3,000 cfs) refuge and rearing habitat while connecting 0.5 acres of currently isolated pond habitat. This project directly benefits juvenile Chinook, steelhead, and coho. The project also includes 1.39 acres of riparian restoration.

Project Benefit

The goal of the project is to connect isolated freshwater in-stream habitat to increase the range and distribution of salmon. The objective of the project is to increase access to freshwater in-stream side channels, oxbows, and other channels.

Accomplishments

Metric

Completed

Originally
Proposed

Instream Habitat

Stream Miles Treated

.13

.08

Riparian Habitat

Stream Miles Treated

.13

Acres Treated

1.4

Source

Funds

PCSRF

$354,954

Other

$62,982

Report Total:

$417,937

Worksites

1-Gagnon CMZ Off-Channel Habi

Worksite Identifier: 1-Gagnon CMZ Off-Channel Habi
Start Date:
End Date:

Area Description

No Area Description data was found for this worksite.

Location Information

Basin: Upper Columbia (170200)
Subbasin:
Watershed:
Subwatershed:

State: Washington
Recovery Domain: Upper Columbia River
Latitude: 47.53261156
Longitude: -120.52219397

ESU

Upper Columbia River Summer- and Fall-run Chinook Salmon ESU
Upper Columbia River Steelhead DPS
Upper Columbia River Spring-run Chinook Salmon ESU

Map

Photos

Metrics

C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
- . . C.0.a Habitat restoration and acquisition funding 417,937.31
- . . C.0.b Length of stream treated/protected .13
- . . C.0.c
  Project identified in a Plan or Watershed Assessment
  
  Wenatchee Channel Migration Zone Study (2004)
- . . C.0.d.1 Project Monitoring (LOV)
- . . C.0.d.2 Monitoring Location (LOV)
- . . C.2 Fish Passage ImprovementY (Y/N)
  - . . . . C.2.a Fish Passage Funding 1.15
  - . . . . C.2.b.1 Length of stream made accessible .00
  - . . . . C.2.b.3 Type of blockage/barrier (LOV)
  - . . . . C.2.b.4 Number of blockages/impediments/barriers impeding passage 1
  - . . . . C.2.c.1 Fish passage blockages removed or altered (other than road crossings reported in C.2.f to C.2.i)Y (Y/N)
    - . . . . . . C.2.c.2 Number of blockages/impediments/barriers removed/altered 0
  - . . C.4 Instream Habitat ProjectY (Y/N)
    - . . . . C.4.a Instream Habitat Funding 417,933.85
    - . . . . C.4.b Total length of instream habitat treated .13
    - . . . . C.4.c.1 Channel reconfiguration and connectivityY (Y/N)
      - . . . . . . C.4.c.2 Type of change to channel configuration and connectivity (LOV)
      - . . . . . . C.4.c.3 Miles of stream treated for channel reconfiguration and connectivity .01
      - . . . . . . C.4.c.4 Miles of off-channel stream created through channel reconfiguration and connectivity .13
      - . . . . . . C.4.c.5 Acres of off-channel or floodplain connected through channel reconfiguration and connectivity 1.1
      - . . . . . . C.4.c.6 Instream pools created/added through channel reconfiguration and connectivity 1
    - . . . . C.4.d.1 Channel structure placementY (Y/N)
      - . . . . . . C.4.d.2 Material used for channel structure (LOV)
      - . . . . . . C.4.d.3 Miles of stream treated through channel structure placement .01
      - . . . . . . C.4.d.4 Acres of streambed treated through channel structure placement .5
      - . . . . . . C.4.d.5 Pools expected to be created through channel structure placement 1
      - . . . . . . C.4.d.7 Number of structures placed in channel 22
    - . . . . C.4.e.1 Streambank stabilization Y (Y/N)
      - . . . . . . C.4.e.2 Material Used For Streambank Stabilization (LOV)
      - . . . . . . C.4.e.3 Miles of streambank stabilized .03
    - . . C.5 Riparian Habitat ProjectY (Y/N)
      - . . . . C.5.a Riparian Habitat Funding 1.15
      - . . . . C.5.b.1 Total riparian miles streambank treated .13
      - . . . . C.5.b.2 Total Riparian Acres Treated 1.4
      -      . . . . C.5.c.1 Riparian plantingY (Y/N)
        
             . . . . . . C.5.c.2
        Species of plants planted in riparian
        
        Populus balsamifera, Cornus stolonifera, Salix scouleriana, S. lasiandra, S. exigua, Amalanchier alnifolia, Rosa woodsii
        
             . . . . . . C.5.c.3 Acres planted in riparian 1.4
      -      . . . . C.5.h.1 Riparian plant removal/controlY (Y/N)
        
             . . . . . . C.5.h.2
        Species of plants treated/removed in riparian
        
        N/A
        
             . . . . . . C.5.h.3 Acres of riparian treated for plant removal/control .0
      -      . . C.8 Wetland ProjectY (Y/N)
        
             . . . . C.8.a Wetland funding 1.15
        
             . . . . C.8.b Total acres of wetland area treated .0
        
             . . . . C.8.e.1 Wetland improvement/restorationY (Y/N)
        
             . . . . . . C.8.e.2 Acres of wetland treated .0