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  • Corps of Engineers hosts open house at Lock and Dam 10

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, is hosting an open house at Lock and Dam 10, in Guttenberg, Iowa, Saturday, Sept. 25, in conjunction with GermanFest.

  • The Corps of Engineers hosts open house at Lock and Dam 7

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, is hosting an open house at Lock and Dam 7, near La Crescent, Minnesota, Saturday, Sept. 18, in conjunction with Applefest.

  • Geophysical Investigation to Assess Condition of Grouted Scour Hole: Old River Control Complex—Low Sill Concordia Parish, Louisiana

    Abstract: Geophysical surveys, both land-based and water-borne, were conducted at the Old River Control Complex‒Low Sill, Concordia Parish, LA. The purpose of the surveys was to assess the condition of the grout within the scour region resulting from the 1973 flood event, including identification of potential voids within the grout. Information from the ground studies will also be used for calibration of subsequent marine geophysical data and used in stability analysis studies. The water-borne survey consisted of towed low frequency (16-80 MHz) ground penetrating radar (GPR), whereas the land-based surveys used electrical resistivity and seismic refraction. The GPR survey was conducted in the Old River Channel on the upstream side of the Low Sill structure. The high electrical conductivity of the water (~50 mS/m) precluded penetration of the GPR signal; thus, no useful data were obtained. The land-based surveys were performed on both northeast and southeast sides of the Low Sill structure. Both resistivity and seismic surveys identify a layered subsurface stratigraphy that corresponds, in general, with available borehole data and constructed geologic profiles. In addition, an anomalous area on the southeast side was identified that warrants future investigation and monitoring.

  • A Bathymetric Study of the Forebay at the Old River Low Sill Structure from 1963 to 2019

    Purpose: The purpose of this study is to use historical hydrographic surveys to quantify bathymetric changes in the forebay channel area of ORLSS over the last 56 yr. The results from this comparison support an ongoing geotechnical study led by Mr. Lucas Walshire, U.S. Engineer Research and Development Center (ERDC), for the U.S. Army Corps of Engineers, New Orleans District (USACE MVN).

  • Construction to begin on Sturgeon Lake environmental project; Sturgeon Lake boat landing will remain open

    ST. PAUL, Minn. –The U.S. Army Corps of Engineers, St. Paul District, will soon begin construction activities in Sturgeon Lake in Pool 3 of the Mississippi River and at the Sturgeon Lake boat landing near Red Wing, Minnesota.

  • Corps continues to monitor its Mississippi River Headwaters reservoirs

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, continues to monitor water levels at its Mississippi River Headwaters reservoirs. The water levels in the reservoirs, except for Pokegama Lake, are below the summer target level, which is the level maintained for water supply, environmental and recreational benefits. All reservoirs are releasing the minimum flow. The Corps urges boaters to go slow and use caution in lower-than-normal lakes levels.

  • CANCELED: Corps halts Motor Vessel Mississippi open houses

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, has canceled its three open houses that were planned for the Motor Vessel Mississippi due to increased COVID-19 precautions.

  • Corps to host three open houses onboard the Motor Vessel Mississippi

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, will host three open houses onboard the Motor Vessel Mississippi: • La Crosse, Wisconsin, Aug. 12, 5-7 p.m., at Riverside Park • Wabasha, Minnesota, Aug. 13, 5-7 p.m., at 50 Pembroke Ave. (adjacent to the National Eagle Center) • Red Wing, Minnesota, Aug. 14, 10 a.m.-12 p.m., at Levee Park

  • Corps announces additional temporary closures at Hastings lock and dam to replace nearly 80-year-old gates

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, will have additional temporary closures at Lock and Dam 2 in Hastings, Minnesota, August 3 and 5 to properly align and seal the lock chamber’s new miter gates. The lock will be closed from 7 a.m. to 7 p.m.

  • Corps set to move dredged material, urges caution near work site

    The U.S. Army Corps of Engineers, St. Paul District, is scheduled to begin moving approximately 50,000 cubic yards of river sand, or dredged material, from the Dakota Island Placement Site, near Dakota, Minnesota, to the Trempealeau, Wisconsin, Placement Site, which is about 8 miles away.