Project 2010-077-00:Tucannon River Programmatic Habitat Project, Contract 84038:2010-077-00 EXP TUCANNON (PARENT) HABITAT PROGRAM: ADMIN & MANAGE
Wetland
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| BPA_2010-077-00_84038 | | - | | 04/01/2020 | | 03/31/2021 | | Completed | | 11/10/2021 | | |
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Description
Project 2010-077-00:
https://www.cbfish.org/Project.mvc/Display/2010-077-00
Work order: 00270089 task 01
Independent assessments have concluded that the following habitat factors are the most significant limiting factors for spring Chinook salmon in the Tucannon River:
• Elevated fine sediment • Elevated water temperature • Lack of channel complexity • Lack of floodplain connectivity • Reduced streamflow
Objectives of this proposal:
OBJ-1: Increase riparian function to 75% of maximum: Restore and protect riparian species composition and density to improve canopy cover, riparian area (acreage) and riparian structure.
OBJ-2: Increase large woody debris to 2 or more pieces per channel width: Add LWD to increase pool quantity and quality, promote development of side channel and backwater habitat and streambed aggradation to increase floodplain connectivity.
OBJ-3: Increase pool frequency to 15% of stream area: The desired outcome of this objective is to increase stream depth, habitat complexity, substrate sorting, and promote stable pool-out habitat for spawning.
OBJ-4: Reduce channel confinement/increase floodplain connectivity to at least 25% of river length: The desired outcome of this objective is improved channel function, increased stream length and side channel habitat, restored hyporheic conditions and riparian survival.
OBJ-5: Reduce maximum daily water temperature so that it does not exceed 72F at confluence of Pataha Creek (RM 11.8): The outcome of this objective is to improve water temperature, increase useable habitat, and expand the geographic range of spring Chinook.
OBJ-6: Decrease substrate embeddedness to 20% in all reaches above confluence of Pataha Creek (RM 11.8): The outcome of this objective is to increase egg survival, improve invertebrate species diversity and abundance, and increase interstitial spaces.
Contract 84038:
https://www.cbfish.org/Contract.mvc/Summary/84038
Worksites
BPA - BPA_2010-077-00_84038-ws-558543: J: 47. Plant Vegetation
- Worksite Identifier: BPA - BPA_2010-077-00_84038-ws-558543: J: 47. Plant Vegetation
- Start Date: 04/01/2020
- End Date: 03/31/2021
Area Description
Plant trees, shrubs and grasses to support restoration designs and proper habitat structure, function and connectivity, PA13 Rainbow Wetland
Additional Detail
Work Statement Element 150008:
https://www.cbfish.org/WorkStatementElement.mvc/Summary/150008
Enhancing and restoring instream habitats throughout project areas in the Tucannon will be accomplished through a variety of treatment actions in the main channel, along the banks, and within the floodplain; the associated treatment of riparian areas is expected to induce naturally occurring repair, restoration, and recovery of both floodplain and riparian zone function and processes.
The inclusion of streambank and floodplain zone vegetative plantings is an integral component of implementation of the restoration designs, as both: (a) an essential attribute of habitat enhancement in support of the instream LWD and ELJ work elements, addressed to improved habitat function and floodplain connectivity; and (b) an aspect of the remediation of construction impacts that includes the clean-up and restoration of construction access points and materials or equipment storage and mobilization areas.
This work is an active restoration strategy that enhances existing habitat conditions, and in conjunction with the addition of LWD and other structural features contributes to improved instream habitat complexity, encourages greater diversity in riparian plant communities, and promotes increased connectivity and function between instream and riparian habitats, and the re-emerging, reactivated floodplain areas. The work is combined with post-implementation site restoration, for efficiency, to address the unavoidable negative impacts of construction activities.
The overarching implementation strategy is the establishment and support of riparian plantings that serve in the long-term to provide shade and reduce temperatures, and contribute to proper floodplain structure, connectivity and habitat function. Native Grass seed mix will be used to establish a conservation cover; and riparian trees and shrubs such as Blue Elderberry, Mock Orange, Ponderosa Pine, Cottonwood, and Willow stems will be planted for floodplain connection and habitat function in areas where natural recruitment is lacking or conditions are sufficiently changed to support the establishment of new plant communities.
Location Information
- Basin:
- Subbasin:
- Watershed:
- Subwatershed:
- State:
- Recovery Domain:
- Latitude: 46.313501
- Longitude: -117.659626
ESU
No ESU data was found for this worksite.
Map
Photos
Metrics
Metrics
- C.0
Salmonid Habitat Restoration and AcquisitionY (Y/N)
- . . C.8
Wetland ProjectY (Y/N)
- . . . . C.8.a
Wetland funding 2,000.00
- . . . . C.8.c.1
Wetland plantingY (Y/N)
- . . . . . . C.8.c.3
Acres of wetland planted .0
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