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Dry Creek (Warm Springs Dam) Restoration, Sec. 1135

DRY CREEK (WARM SPRINGS) RESTORATION, SEC. 1135

CONTINUING AUTHORITY

Ecosystem Restoration Detailed Project Report with Integrated Environmental Assessment (PDF)

PROJECT LOCATION AND DESCRIPTION

The project is located along Dry Creek, below USACE Warm Springs Dam (WSD) and near the City of Healdsburg in Sonoma County, CA. The existing Corps project, Warm Springs Dam, was completed in 1983. After the Dam was built there was an increasing awareness of adverse impacts to the anadromous fish populations. A Biological Opinion (BO), issued by the National Marine Fisheries Service on Dry Creek at Warm Springs Dam, mandates that the Corps perform various Reasonable and Prudent Measures to save threatened salmonid species. Project construction for this project was completed in the fall of 2018 and the project is currently in the monitoring and adaptive management phase for up to 5-years or until ecological success is determined by USACE.  The project restored 6.7 acres of stream and riparian habitat along 0.5 miles of stream by improving habitat complexity and hydrologic connectivity with the floodplain through the construction of side channels, large wood structures, riffles, and alcoves pool features. Riparian habitat was improved through invasive species reduction and riparian revegetation with native species. These features have already proven successful in enhancing shelter for young salmon and steelhead as they spend a critical first year or two in freshwater before migrating to the ocean.

            TOTAL FUNDING

            TOTAL COST                                                                           $  6,340,000

            FEDERAL COST                                                                      $  4,430,000

            NON-FEDERAL COST                                                             $  1,910,000 

 

            TOTAL FEDERAL COST THROUGH FY 2019                       $  6,750,000

            FY 2020 BUDGET                                                                   $                0

            COST TO COMPLETE                                                            $   2,320,000

FY 20 ACCOMPLISHMENTS

  • Continued Project Monitoring and Possible Adaptive Management based on Monitoring Results

FY 21 ACCOMPLISHMENTS (subject to the availability of funds)

  • Award new phase of construction
  • Complete construction of the entire reach in Summer 2019

ISSUES AND OTHER INFORMATION

  • The Sonoma County Water Agency is the Non-Federal Sponsor (NFS).
  • Project construction was completed in 2018.
  • Continuing monitoring results will inform the project of the need for adaptive management for up to 10-years. The final OMRR&R plan will be provided to the NFS once ecological success has been determined by USACE.

CONGRESSIONAL INTEREST­

  • 2nd District, Rep. Jared Huffman
  • 5th District, Rep. Mike Thompson

POINT OF CONTACT

  • Deputy for Project Management, Edwin S. Townsley, (415) 503-6593

Updated on 6 February 2020

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