US Army Corps of Engineers
San Francisco District Website Website

Dry Creek (Warm Springs Dam) Restoration

DRY CREEK (WARM SPRINGS DAM) ECOSYSTEM RESTORATION

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 main objective of the project is to restore stream and floodplain habitat for fish and wildlife, including threatened and endangered salmon. This project is now in the PED phase with construction scheduled for 2021-2024. The project will restore approximately 47 acres of stream, floodplain and riparian habitat along 2.6 miles of stream. Restoration measures include increasing habitat complexity and improving hydrologic connectivity with the floodplain by constructing combinations of riffles, large wood structures, backwaters, side channels, and alcoves pool features to create refuge for young fish. The features will be constructed using natural materials such as logs and rocks. Bank stabilization measures will prevent or reduce erosion and provide vegetation cover.  Riparian habitat will be improved through invasive species reduction and revegetation.

Project construction is scheduled in three phases as follows:

  • Phase I: Construction scheduled for 2021-2022 along 1.0 mile of upper Dry Creek.
  • Phase II: Construction scheduled for 2022-2023 along 0.65 miles of Dry Creek.
  • Phase III: Construction scheduled for 2023-2024 along 0.95 miles of lower Dry Creek.

            TOTAL FUNDING

            TOTAL COST                                                                                        $      48,138,000

            FEDERAL COST                                                                                   $      30,784,000

            NON-FEDERAL COST                                                                          $      17,354,000

            TOTAL FEDERAL COST THROUGH FY 2020                                     $        3,385,000

            FY 2021 BUDGET                                                                                 $                      0
            COST TO COMPLETE                                                                           $          500,000
            Includes Feasibility (50/50) and PED (75/25) funding.

FY 21 ACCOMPLISHMENTS

  • Complete 100% designs
  • Initiate Subphase 1 of 3 Construction Subphases

FY 20 ACCOMPLISHMENTS

  • Complete Draft 99% designs.
  • Execute Construction PPA (funding dependent).

FY 19 ACCOMPLISHMENTS

  • Directors Report Signed on 29 March 2019
  • PED Design Agreement Executed on 22 April 2019
  • Initiated PED and Project Designs and Completed Project 60% Designs

ISSUES AND OTHER INFORMATION

  • The Sonoma County Water Agency (SCWA) is the Non-Federal Sponsor.
  • A Biological Opinion (BO), issued by the National Marine Fisheries Service, mandates that SCWA and USACE perform various Reasonable and Prudent Measures to save threatened and endangered salmonid species. Implementation of this ecosystem restoration project will help comply with these BO requirements.
  • Construction will be competed in three subphases and each subphase is scheduled for two construction seasons. The first subphase of construction is planned for 2021-2022.

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 4 February 2020

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Contact

General Questions
415-503-6708
450 Golden Gate
San Francisco, CA 94102