Walla Walla River RM 35.5 Restoration

Salmonid Habitat Restoration and Acquisition

Project ID	21-1004 R
Recovery Domains	Middle Columbia River
Start Date	09/23/2021
End Date	02/02/2024
Year	2021
Status	Completed
Last Edited	05/12/2026

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Description

The Walla Walla County Conservation District implemented a 0.56 mile long restoration project located on the Walla Walla River, in Walla Walla County in the summer of 2023. Construction started at the Last Chance Road bridge and continued upstream for 0.56 miles. The overall project goals were to install instream and streambank structures, floodplain reconnection, side channel reconnection and enhancement, and riparian plantings. There were a total of 28 structures placed both instream and on the rivers bank. Riparian plantings occurred following constructions. There were 29 acres of undercanopy plantings in the project area. This project will improve all aspects of habitat for Mid Columbia steelhead and bull trout.

The project was imlpemented as designed. The discrpency in the number of wood structures installed is due to a reporting error at the time the project was put under agreement.

Project Benefit

The installation of 28 instream structures were placed with the intent to improve instream fish habitat and restore natural stream processes through the 1/2 mile long reach. This project is intended to promote retention of mobile wood, increase floodplain connectivity, and improve all aspects of habitat for Mid Columbia steelhead and bull trout.

Accomplishments

Metric

Completed

Originally
Proposed

Instream Habitat

Stream Miles Treated

.56

Riparian Habitat

Stream Miles Treated

.20

Acres Treated

1.3

Source

Funds

State

$249,810

Other

$51,000

Report Total:

$300,810

Worksites

1-WALLA WALLA RIVER RM 35

Worksite Identifier: 1-WALLA WALLA RIVER RM 35
Start Date:
End Date:

Area Description

No Area Description data was found for this worksite.

Location Information

Basin: Middle Columbia (170701)
Subbasin:
Watershed:
Subwatershed:

State:
Recovery Domain: Middle Columbia River
Latitude: 46.02883209
Longitude: -118.43979186

ESU

Middle Columbia River Steelhead DPS

Map

Photos

Metrics

C.0 Salmonid Habitat Restoration and AcquisitionY (Y/N)
- . . C.0.a Habitat restoration and acquisition funding 300,810.05
- . . C.0.b Length of stream treated/protected .56
- . . 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.4 Instream Habitat ProjectY (Y/N)
  - . . . . C.4.a Instream Habitat Funding 277,165.82
  - . . . . C.4.b Total length of instream habitat treated .56
  - . . . . 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 .07
    - . . . . . . C.4.c.5 Acres of off-channel or floodplain connected through channel reconfiguration and connectivity 1.2
    - . . . . . . C.4.c.6 Instream pools created/added through channel reconfiguration and connectivity 2
  - . . . . 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 .56
    - . . . . . . C.4.d.5 Pools expected to be created through channel structure placement 12
    - . . . . . . C.4.d.7 Number of structures placed in channel 28
  - . . C.5 Riparian Habitat ProjectY (Y/N)
    - . . . . C.5.a Riparian Habitat Funding 23,644.23
    - . . . . C.5.b.1 Total riparian miles streambank treated .20
    - . . . . C.5.b.2 Total Riparian Acres Treated 1.3
    - . . . . C.5.c.1 Riparian plantingY (Y/N)
      - . . . . . . C.5.c.2
        Species of plants planted in riparian
        
        willows, alders, red osioer dogwood, water birch, mock orange, ponderosa pine, chokecherry
      - . . . . . . C.5.c.3 Acres planted in riparian 1.3
      - . . . . . . C.5.c.4 Miles of streambank treated with riparian planting .20