Big River Salmonid Rearing Habitat and Large Wood Enhancement Project Designs.

Salmonid Restoration Planning and Assessments

Restoration Planning And Coordination
Project ID1611968186709
Recovery DomainsN Central California Coast
Start Date05/25/2021
End Date02/29/2024
Last Edited11/05/2021
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The purpose of the Project is to produce site characterizations, a risk assessment, and design and preparation of engineering plans for large wood habitat enhancement structures within a three-mile reach of the Big River. The project is necessary because multiple state and federal salmonid recovery plans promote restoration projects designed to create or restore complex habitat features that provide for localized pool scour, velocity refuge and cover in high priority watersheds like Big River.

The specific objective of this Project is to identify opportunities for, and design engineered log jams (ELJs) that, once implemented, will provide physical shelter, promote diversity in flow velocity structure where fish can harbor during higher velocity events, create scouring forces to develop a complex channel bed with deep pools, and locally raise the water surface elevation to increase floodplain connectivity.

Project Benefit    

The project goal is to restore salmonid habitat complexity in a three-mile reach of the Big River by installing moderate to large-scale ELJ structures. These structures will be used to create habitat diversity and flow complexity for Coho, steelhead, and Chinook Salmon to improve both summer and winter rearing conditions. It is expected that the habitat improvements will also benefit lamprey, and other native aquatic species.


Metric Completed Originally

Funding Details

Report Total:$295,171

Project Map



  • Worksite Identifier: 1611968186939
  • Start Date:
  • End Date:
Area Description
Big River Project Reach

Location Information

  • Basin: Northern California Coastal
  • Subbasin:
  • Watershed:
  • Subwatershed:
  • State: California
  • Recovery Domain: N Central California Coast
  • Latitude: 39.31183
  • Longitude: -123.63774


  • California Coastal Chinook Salmon ESU
  • Central California Coast Coho Salmon ESU
  • Northern California Steelhead DPS




  • B.0 Salmonid Restoration Planning and AssessmentsY (Y/N)
    •      . . B.0.a Planning And Assessment Funding .00
    •      . . B.0.b.1 Area Encompassed
    •      . . B.0.b.2 Stream Miles Affected
    •      . . B.1 Restoration Planning And CoordinationY (Y/N)
      •      . . . . B.1.a Planning and Coordination funding
      •      . . . . B.1.b.11 Engineering/design work for restoration projectsY (Y/N)
        •      . . . . . . B.1.b.11.a
          Name of plan implemented
        •      . . . . . . B.1.b.11.b
          Description and scope of the plan implemented