Peshastin RM 4.3 Side Channel Preliminary Design

Salmonid Restoration Planning and Assessments

Project ID	19-1477 P
Recovery Domains	Upper Columbia River
Start Date	12/12/2019
End Date	03/18/2022
Year	2019
Status	Completed
Last Edited	05/03/2024

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Description

The project completed conceptual and preliminary designs (including basis of design report, construction cost estimate, hydraulic modeling, etc.) for an effort to better connect an approximately 9-acre floodplain surface, construct approximately 2,500 ft of side channel habitats, and add in-stream structure between approximately RM 4.0 and 4.4 on Peshastin Creek. The designs lay the groundwork for a future restoration project to provide off-channel habitats and enhance in-stream habitats primarily to benefit juvenile Chinook and steelhead rearing.

Project Benefit

To develop a preliminary design for a off-channel restoration alternative to provide critical juvenile Chinook and steelhead rearing habitat.

Source

Funds

PCSRF

$79,208

Other

$19,802

Report Total:

$99,010

Worksites

1-Peshastin Side Channel RM 4

Worksite Identifier: 1-Peshastin Side Channel RM 4
Start Date:
End Date:

Area Description

No Area Description data was found for this worksite.

Location Information

Basin:
Subbasin:
Watershed:
Subwatershed:

State: Washington
Recovery Domain: Upper Columbia River
Latitude: 47.51820564
Longitude: -120.62539229

ESU

Upper Columbia River Steelhead DPS
Upper Columbia River Spring-run Chinook Salmon ESU

Map

Photos

Metrics

B.0 Salmonid Restoration Planning and AssessmentsY (Y/N)

. . B.0.a Planning And Assessment Funding 99,010.00
. . B.0.b.1 Area Encompassed 8.9
. . B.0.b.2 Stream Miles Affected .43

. . B.1 Restoration Planning And CoordinationY (Y/N)

. . . . B.1.a Planning and Coordination funding 99,010.00

. . . . B.1.b.11 Engineering/design work for restoration projectsY (Y/N)

. . . . . . B.1.b.11.a

Name of plan implemented
Interfluve. 2010. Lower Peshastin Creek Tributary and Reach Assessment. Wenatchee Subbasin, Chelan County, WA. Prepared for Yakama Nation Fisheries Toppenish, WA June.

. . . . . . B.1.b.11.b

Description and scope of the plan implemented

The project is identified in Upper Columbia Spring Chinook Salmon and Steelhead Recovery Plan (August 2007). Peshastin Creek is identified as a Category 2 Assessment Unit. Recommendations are to re-establish connectivity throughout the assessment unit by removing, replacing, or fixing; artificial barriers; use practical and feasible means to increase stream flows (within the natural hydrologic; regime and existing water rights) in Peshastin Creek; reduce water temperatures by increasing stream flows and restoring riparian vegetation along the stream. Increase habitat diversity and quantity by restoring riparian vegetation, adding instream structures and large woody debris, and reconnecting side channels and the floodplain with the stream (page 207, lines 17-18)