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  • Corps of Engineers hosts open house at Upper St. Anthony Lock and Dam

    The U.S. Army Corps of Engineers, St. Paul District, is hosting an open house at the Upper St. Anthony Lock and Dam on the Mississippi River in Minneapolis on July 27.

  • Corps of Engineers to host an open house at Lock and Dam 2

    The U.S. Army Corps of Engineers, St. Paul District, is hosting an open house at Lock and Dam 2 on the Mississippi River in Hastings, Minnesota, on Saturday, July 20.

  • Mississippi River AdH Model Modification and Evaluation, Thebes, Illinois, to Birds Point, Missouri, Reach

    Abstract: A calibrated hydrodynamic and sediment transport model of the Upper Mississippi River, from Thebes, Illinois, to Birds Point, Missouri, was created to investigate hydraulics and sediment transport in the river channel and across the Dogtooth Island Peninsula (DIP) as the result of the Len Small levee breach. A hydrodynamic model was developed for the reach and calibrated to stage and breach outflow discharge data for the floods of 2011, 2015–2016, and 2017. The hydrodynamic model was used to investigate breach outflow discharges and shear stress distribution over the DIP. Soil and geologic maps were investigated to determine soil parameters and the long-term stability of soil formations on the DIP. The Upper Mississippi River sediment transport model was built upon the hydrodynamic model and soil mapping efforts. The sediment transport model was calibrated to the 2015 and 2017 flood events. Calibration data were limited to changes in elevation, which were then areally averaged, computed from comprehensive channel surveys and lidar data for the DIP. This model provides a solid foundation for comparing alternative measures to minimize further erosion of the DIP and for analyzing the risk of a channel cutoff occurring.

  • Corps of Engineers hosts open house at Lock and Dam 4

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, will host an open house at Lock and Dam 4, on the Mississippi River, in Alma, Wisconsin, on July 27.

  • Corps urges caution to rec boaters on newly created islands near Grafton

    The U.S. Army Corps of Engineers, St. Louis District’s Dredge Potter is currently working near Grafton, Illinois, between river miles 218 and 222, using a 300-foot-long flexible floating pipeline to removed material from the navigation channel. The flexible pipeline allows for the creation of ephemeral islands that will be used for habitat restoration and mimics natural sand bar formation. Due to rising water levels and since the dredge placement is unconfined using the energy of the river to distribute the sediment and shape the bar, these newly created ephemeral islands or sandbars may be underwater or unstable and it is recommended that boaters avoid these temporary islands.

  • UPDATE: Locks and Dams 1 and 3 are now open

    The U.S. Army Corps of Engineers, St. Paul District, announced today that Lock and Dam 1, in Minneapolis, is now open to all commercial traffic, and Lock and Dam 3, in Welch, Minnesota, is open to navigation traffic. Be advised that Lock and Dam 1 flows are at 30,000 cubic feet per second with floating debris creating potentially hazardous conditions for recreational traffic; therefore, the lock is closed to recreational traffic until water flows decrease and the excessive amount of floating debris is reduced.

  • Corps closes Lock and Dam 3 due to high Mississippi River flows

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, closed Lock and Dam 3, located upstream of Red Wing, Minnesota, to all traffic until further notice due to high flows over 125,000 cubic feet per second, or cfs. It is anticipated that this lock will be reopened July 4, but it is weather dependent.

  • Mississippi River recreation areas closed due to flooding

    The U.S. Army Corps of Engineers, Rock Island District, has closed multiple campgrounds, boat ramps and day use areas along the Mississippi River due to flooding. Additional closures are expected later this week and are anticipated to remain in place through the 4th of July holiday. Reservation cancelations will be communicated by Recreation.gov, as needed.

  • Corps of Engineers monitoring flood conditions throughout Minnesota

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, is actively working with its partners to monitor flood conditions throughout the state of Minnesota following heavy rains.

  • Corps of Engineers begins dredging operations near Brownsville, Minnesota

    The U.S. Army Corps of Engineers, St. Paul District, is conducting dredging operations at their Above Brownsville Placement site, also known as “Crater Island,” within Pool 8, of the Mississippi River, near Brownsville, Minnesota.