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  • Notice of Availability: Final Environmental Impact Statement for the Enbridge Line 5 Tunnel Project

    Expiration date: 3/9/2026

    Announcement for the Notice of Availability of a Final Environmental Impact Statement for the Enbridge Line 5 Tunnel Project, Emmet and Mackinac Counties, Michigan. Detroit District, Permit Application No. LRE-2010-00463-56-A19. The Notice of Availability for the Final EIS was published in the Federal Register on February 6, 2026. The Final EIS is available for public review beginning on February 6, 2026, on the project website at www.line5tunneleis.com. The Final EIS addresses the potential environmental impacts of the proposed project and reasonable alternatives to the project. The Final EIS will inform USACE’s Record of Decision and permit decision on the application, which will be completed no sooner than 30 days after Final EIS publication.

  • Notice of Availability: Environmental Assessment - Martin Retention Basin Stormwater Improvements, St. Clair Shores, MI

    Expiration date: 2/15/2026

    The U.S. Army Corps of Engineers, Detroit District, announces the availability of an Environmental Assessment (EA) and preliminary Finding of No Significant Impact (FONSI) for stormwater infrastructure improvements at the Martin Retention Basin, St. Clair Shores, Macomb County, Michigan. This project is authorized under Section 219 of the Water Resources Development Act of 1992. Public comment period: 30 days. Comments due by February 14, 2026.

  • Reissuance of Nationwide Permits (NWPs) for Michigan - Effective March 15, 2026

    Expiration date: 3/15/2031

    The U.S. Army Corps of Engineers announces the reissuance of 56 existing Nationwide Permits (NWPs) and one new NWP, effective March 15, 2026 through March 15, 2031. The 2021 versions of these NWPs expire on March 14, 2026. Regional conditions for Michigan waters will be announced in a future public notice. Federal Register: 91 FR 768.

  • Review Plan - Southeast Michigan Flood Risk Management Feasibility Study

    Review Plan for the Southeast Michigan Flood Risk Management Feasibility Study, Macomb, Oakland, and Wayne Counties, Michigan. The $2.5 million study identifies solutions to reduce flood risk in Southeast Michigan, including Detroit and surrounding communities. Study authorized under Section 8201 of WRDA 2022. Non-Federal Sponsor: Great Lakes Water Authority. Project Number: 510603. This Review Plan defines levels and scopes of review required for the feasibility phase products.

  • Notice of Availability of the Beta Streamflow Duration Assessment Methods for the Northeast and Southeast

    The U.S. Army Corps of Engineers (Corps) Baltimore, Buffalo, Charleston, Chicago, Detroit, Fort Worth, Galveston, Huntington, Jacksonville, Kansas City, Little Rock, Louisville, Memphis, Mobile, Nashville, New England, New Orleans, New York, Norfolk, Philadelphia, Pittsburgh, Savannah, St. Louis, Tulsa, Vicksburg, and Wilmington Districts, and the

    View Notice of Availability

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Consolidation of Studies

The Water Resources Development Act establishes a single-phase cost-shared study process that for each feasibility study undertaken, the district engineer will develop a detailed study schedule and notify the non-federal interests.

Overviews of study schedule milestones are posted below.