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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.

  • Silica Sand Levee Disposition Study Review Plan

    This document explains how the U.S. Army Corps of Engineers, Huntington District, will review the Silica Sand Levee Disposition Study to ensure technical and policy quality. It describes the types of reviews that will occur and how the study’s recommendations will be checked before decisions are made.

    Beach City Lake
    Beach City Lake

  • For Public Review: Beech Fork Dam Water Control Plan Draft EA & FONSI

    Expiration date: 11/30/2026

    Beech Fork Dam Water Control Plan Update Draft EA and FONSI for public review. The proposed action would consist of the USACE, Huntington District updating Beech Fork's Water Control Plan to increase the rate of change at the dam’s outflow from 0.5ft/hr to 1ft/hr which would allow for one (1) foot change in stage per hour at the outflow as a result

    Draft Environmental Assessment
    Draft Finding of No Significant Impact

  • Public Review: Grayson Dam Water Control Plan Draft FONSI and EA

    Expiration date: 11/30/2026

    The U.S. Army Corps of Engineers Huntington District is updating Grayson Dam’s Water Control Plan to increase the rate of change at the dam’s outflow from 0.5ft/hr to 1ft/hr which would allow for one (1) foot change in stage per hour at the outflow as a result of the dam’s operations. The draft Environmental Assessment and Findings of No

    Draft EA
    Draft FONSI

  • Environmental Assessment and Findings of No Significant Impact: Upland Placement of Dredged Material Near Gay, Michigan for Grand Traverse Harbor, Houghton County, Michigan

    Expiration date: 9/20/2026

    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 placing dredged material from the federal navigation channel into a state-owned, bermed upland placement site.

  • Special Public Notice: Record of Decision for Enbridge Line 5 Tunnel Project

    The U.S. Army Corps of Engineers, Detroit District has published its Record of Decision (ROD) and announced its decision to issue a permit under Section 10 of the Rivers and Harbors Act and Section 404 of the Clean Water Act to Enbridge Energy, L.P. The permit authorizes Enbridge to bore a 21-foot-diameter tunnel underneath the Straits of Mackinac to replace two existing lakebed pipelines with a new 30-inch-diameter pipeline segment.

    Corps of Engineers issues Enbridge Energy permit for regulated activities proposed for the Line 5 Tunnel project, releases Record of Decision

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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.