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  • USACE awards $35.9M contract for Mount St. Helens sediment dam improvement

    In an effort to manage flood risk for downstream communities, the U.S. Army Corps of Engineers will raise the dam that captures some of the sediment that continues to flow from Mount St. Helen after its 1980 eruption. USACE awarded a $35.9 million contract to Anvil Builders, Inc., to raise the 184-foot-tall Mount St. Helens Sediment Retention Structure (SRS) by 10 feet.

  • Second Life: Turning Debris into Critical River and Coastal Habitats

    Since 2006, U.S. Army Corps of Engineers, Seattle District, and the Port of Seattle have repurposed salvaged large, woody debris to restore vital aquatic ecosystems. This collaborative effort transforms navigational hazards into fish and wildlife habitat, that support shoreline resilience. The collaboration began small ... and has grown over the years.

  • Century-Old Huron Pier Gets $3.5 Million Overhaul

    The U.S. Army Corps of Engineers first performed work at Huron Harbor in 1906, widening the pier from 120 feet to 180 feet to accommodate the larger vessels that drove industry and the local economy. Today, more than a century later, major repairs are underway to ensure the harbor continues to function safely and reliably.

  • Army Corps shares update on Maurice River maintenance dredging

    The U.S. Army Corps of Engineers’ Philadelphia District shared an update regarding upcoming maintenance dredging of the lower Maurice River in Cumberland County, N.J. The Army Corps’ contractor, Cottrell Contracting Corporation of Chesapeake, Va., will dredge approximately 80,000 cubic yards of sediment from the federal channel near the mouth of the Maurice River.

  • Forecast shows Missouri River runoff returning to more normal levels after below-average 2025

    For the 2025 calendar year, Missouri River basin runoff above Sioux City, Iowa totaled 19.9 million acre-feet, 78% of average. For 2026, the U.S. Army Corps of Engineers is forecasting runoff in the Missouri River basin above Sioux City, Iowa to be near- average at 24.5 MAF, 96% of average.

  • MKARNS Nav Notice SWL 26-02 Lock Closure Forecast - 2026

    The purpose of this Navigation Notice is to provide forecasted lock closures for the 110-ft Stoplog Conversion projects in 2026. The information below is considered tentative and the closure details could change depending on site conditions, construction means and methods and other variables.

  • Army Corps shares update on New Jersey Intracoastal Waterway maintenance dredging

    The U.S. Army Corps of Engineers’ Philadelphia District shared an update regarding upcoming maintenance dredging of the New Jersey Intracoastal Waterway. In mid-January, the Army Corps’ contractor Barnegat Bay Dredging Company of Harvey Cedars, N.J. will begin dredging the New Jersey Intracoastal Waterway federal channel between markers 152 to 163 (west of Brigantine, N.J.). The sediment will be beneficially used to enhance salt marsh at the East Pool at Edwin B. Forsythe National Wildlife Refuge.

  • MKARNS Nav Notice SWL 25-91 MPLD Nav Pass Closed

    Due to falling river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is in operation and the navigation pass is closed. All vessels are required to pass through the lock until further notice.

  • MKARNS Nav Notice SWL 25-90 MPLD Nav Pass Open

    Due to increased river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is lowered and the navigation pass is open. When the Montgomery Point Lock and Dam tailwater elevation drops below 115 ft, the navigation pass will be closed. Vessels may contact Montgomery Point Lock and Dam on Channel 16 for further information.

  • Army Corps monitors widespread navigation hazards

    Army Corps monitors widespread navigation hazards caused by the recent accumulation of large woody debris carried into the Puget Sound and along the Washington coast, due to multiple atmospheric rivers and heavy precipitation impacting the region.