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  • Hydrographic Surveys (eHydro)

    Access official hydrographic survey data and channel condition reports for USACE navigation projects through the eHydro Dashboard. View survey results, channel depths, and dredging information for all Great Lakes and Ohio River Division waterways. eHydro is the authoritative source for all USACE hydrographic survey data per ER 1110-2-8164.

  • Navigation Charts (IENC)

    Download official Inland Electronic Navigation Charts (IENC) for safe navigation on inland waterways. IENCCloud.us is the only authorized source for USACE navigation charts. Charts are updated regularly and available for free download. Compatible with electronic chart display systems.

  • Notices To Navigation Interests (NTNI) Portal

    View current Notices to Navigation Interests (NTNI) published by the USACE Navigation Data Center. Find information about channel closures, lock and dam status, navigation hazards, chart updates, and dredging operations.

  • Regulatory Request System (RRS) Public Notices

    Search all active permit applications for Section 404 (wetlands), Section 10 (navigable waters), and Section 408 (alterations to USACE projects) in the official Regulatory and Response System (RRS). View permit details, submit comments during public comment periods, and track application status. RRS is the authoritative source for all USACE regulatory permits.

  • Water Management Data (CWMS)

    Access real-time water level data, reservoir operations, water releases, and forecasts for all USACE projects through the Corps Water Management System (CWMS). View current gage readings, historical data, and operational schedules. CWMS is the authoritative source for all USACE water management information per EM 1110-2-3600.

  • Pittsburgh District Regulatory Workshop

    The U.S. Army Corps of Engineers, Pittsburgh District, Regulatory Division is hosting a free regulatory workshop on July 29, 2026, at the Marriott Pittsburgh City Center. The full-day event will cover USACE Regulatory policies, A+ Applications, jurisdictional determinations, mitigation strategies, permit types, and a demonstration of the new Regulatory Request System. Registration is required by July 27, 2026.

  • Draft Environmental Assessment: J. Percy Priest Water Control Manual Revision Available for Public Review

    Expiration date: 1/1/2027

    The U.S. Army Corps of Engineers, Nashville District, has released a Draft Environmental Assessment evaluating proposed revisions to the 1998 Water Control Manual for J. Percy Priest Dam and Reservoir. The proposed update includes an option to delay the annual winter drawdown by up to 42 days, which could provide benefits for hydropower generation, recreation, and wildlife habitat.

    Draft Water Control Manual
    Draft EA

  • Section 340 Williamson Draft EA & FONSI for Public Review

    Expiration date: 8/28/2026

    The draft EA and FONSI for the Section 340 City of Williamson Water System Upgrade Project in Mingo County, WV is available for a 30-day public review period. The City of Williamson currently owns and operates a water system that provides service to approximately 1,742 customers in the communities of Williamson, South Williamson, and surrounding

    View Draft EA
    View Draft FONSI

  • Draft Finding of No Significant Impact and Environmental Assessment — Wilson West Pier Repair

    Expiration date: 7/18/2026

    The U.S. Army Corps of Engineers (USACE) Buffalo District has assessed the environmental impacts of the subject project in accordance with the National Environmental Policy Act (NEPA) of 1969 and has determined a Finding of No Significant Impact (FONSI). Please review the project information and send your comments or recommendations in writing within 30 days to the following e-mail address: WilsonWestPierRepair@usace.army.mil

    View draft EA & FONSI

  • Detroit Lead Line removal, Section 219 Environmental Assessment for Review and Comment

    The U.S. Army Corps of Engineers, Detroit District, provides notice of the availability of an Environmental Assessment (EA) for review and comment. The EA addresses the environmental effects of disconnecting up to 5,000 lead service lines on vacant parcels formerly serviced by the public water distribution system now servicing Detroit residents in Wayne County, Michigan. The EA includes a preliminary Finding of No Significant Impact (FONSI) which includes an evaluation of the anticipated effects from project implementation. The preliminary FONSI reflects the conclusions of the EA that the project does not have a significant effect on the quality of the human environment; therefore, we anticipate that an Environmental Impact Statement (EIS) is not required. This project is authorized under Section 219 of the Water Resources Development Act of 1992, Public Law 102-580, as amended.