Twisp Floodplain Left Bank Alcove Restoration

Salmonid Habitat Restoration and Acquisition

Project ID	18-1857 R
Recovery Domains	Upper Columbia River
Start Date	12/05/2018
End Date	09/22/2020
Year	2018
Status	Completed
Last Edited	05/01/2025

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Description

The project enhanced water quality in a unique spring-fed alcove by the replacement of one undersized road culvert with a bridge, re-construction of a more natural channel meander and enhancement of the channel confluence with the Twisp River. The bridge allows improved fish passage through the channel and into the alcove, thus benefitting ESA-listed spring Chinook and steelhead trout. Site restoration included revegetation with native trees and shrubs.

Project Benefit

To provide expanded access to off-channel rearing habitat along the Twisp river, benefitting ESA-listed spring Chinook and steelhead.

Accomplishments

Metric

Completed

Originally
Proposed

Wetland Habitat

Acres Created

Acres Treated

1.6

Riparian Habitat

Stream Miles Treated

.03

.32

Acres Treated

2.5

Fish Passage

Barriers Removed

Miles Opened

.20

Source

Funds

PCSRF

$41,822

Other

$12,084

Report Total:

$53,906

Worksites

1-TRFP Alcove Channel

Worksite Identifier: 1-TRFP Alcove Channel
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: 48.37192069
Longitude: -120.1917585

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 53,906.01
- . . C.0.b Length of stream treated/protected .04
- . . 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.2 Fish Passage ImprovementY (Y/N)
  - . . . . C.2.a Fish Passage Funding 13,945.42
  - . . . . C.2.b.1 Length of stream made accessible .20
  - . . . . C.2.b.3 Type of blockage/barrier (LOV)
  - . . . . C.2.b.4 Number of blockages/impediments/barriers impeding passage 1
  - . . . . C.2.g.1 Bridge installed or improved at road stream crossingY (Y/N)
    - . . . . . . C.2.g.2 Number of bridges installed or improved/upgraded 1
    - . . . . . . C.2.g.3 Miles of stream made accessible by bridge installation or improvement/upgrade .20
  - . . C.5 Riparian Habitat ProjectY (Y/N)
    - . . . . C.5.a Riparian Habitat Funding 12,069.76
    - . . . . C.5.b.1 Total riparian miles streambank treated .03
    - . . . . C.5.b.2 Total Riparian Acres Treated .1
    - . . . . C.5.d.1 FencingY (Y/N)
      - . . . . . . C.5.d.2 Miles of fence along stream .00
      - . . . . . . C.5.d.3 Acres of riparian area protected by fencing .0
    - . . C.8 Wetland ProjectY (Y/N)
      - . . . . C.8.a Wetland funding 27,890.83
      - . . . . C.8.b Total acres of wetland area treated 1.6
      - . . . . C.8.e.1 Wetland improvement/restorationY (Y/N)
        
        . . . . . . C.8.e.2 Acres of wetland treated 1.6