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  • PUBLICATION NOTICE: Laboratory Characterization of Rapid-Setting Flowable Fill

    Abstract: Utility Fill One-Step 750® is a rapid-setting flowable fill product that has previously been validated in numerous full-scale demonstrations as an expedient backfill solution for Rapid Airfield Damage Recovery. Although the field performance of Utility Fill One-Step 750® has been extensively documented, a full laboratory characterization has not been conducted. This report analyzes and documents results from several laboratory tests conducted at two water to-product ratios. The tests conducted are based on the suite of tests that make up the triservice spall repair certification program used for rapid-setting concrete products. Tests include strength and set time-related properties, typical parameter control tests for concrete, and tests to determine the mineralogy and chemical makeup of the material. Long-term expansion and contraction properties were also tested. The data presented herein are intended to provide an overall assessment of Utility Fill One-Step 750® and to provide reasonable estimates of various design parameters. The results can be used as a basis for the future development of a formal laboratory certification protocol to down-select other rapid-setting flowable fill products for further evaluation.

  • PUBLICATION NOTICE: Application of Chirp Acoustic Sub-Bottom Data in Riverine Environments: Identification of Underlying Rocky Hazards at Cape Girardeau, Missouri, and Thebes, Illinois

    NOTE: A revised version of the report MRG&P Report No. 31 has been published. While the link below remains valid, the PDF attached to the record is new. It is now 47 pages instead of 45 pages after the changes made. Please update your records as needed.

  • PUBLICATION NOTICE: Lake Providence to Old River Geomorphology Assessment

    Abstract: This report integrates information from previous geomorphic studies coupled with new analysis to provide a comprehensive geomorphic characterization of the Lake Providence (River Mile [RM] 487.2 Above Head of Passes [AHP]) to Old River Control Complex, (RM 317 AHP) reach from the early-1800s to present. Individual components of this study included the following: historical geomorphic studies, development of an events timeline, specific gage records, stage and flow duration trends, trends in water surface slopes, bed material studies, suspended sediment data, channel geometry data, and effects of channel improvement features (cutoffs, dike, revetment, and dredging). These individual assessments were consolidated to develop an overall assessment of how the study reach has evolved since the early-1800s.

  • PUBLICATION NOTICE: Baldcypress (Taxodium distichum) at the Wallisville Lake Project: A Review of Applicable Literature and Management Considerations

    Abstract: Changing hydropatterns within the Wallisville Lake Project, near the mouth of the Trinity River in Chambers and Liberty Counties, Texas, have the potential to alter baldcypress forest resiliency. Increasing water levels support saltwater barrier operations while maintaining navigation and recreational access. However, potential impacts of increased water levels on the baldcypress forests are of particular concern because these ecosystems provide unique ecological value and wildlife habitat. The maintenance, succession, and resiliency of baldcypress under various flooding, salinity, and inundation regimes remain poorly defined and pose challenges to resource managers. This report reviews available literature pertaining to salinity and inundation impacts to baldcypress forests. Specific emphasis is placed on the ecological effects of water quality and quantity on the health and persistence of baldcypress. The information gathered in this report is intended to supplement material in the Wallisville Lake Project Water Control Manual to improve management of baldcypress forest conditions and avoid negative ecological impacts. Additionally, this report provides management considerations designed to maintain or enhance baldcypress forests within the Wallisville Lake Project.

  • Louisville District campgrounds to remain closed until further notice

    The U.S. Army Corps of Engineers Louisville District’s Corps-managed campgrounds in Kentucky will remain closed through at least May 31 in the interest of public safety due to the COVID-19 pandemic. While an official date for the reopening of campgrounds and day use areas has not yet been determined, effective today all campground reservations will be cancelled for the month of May.

  • Corps continues flows from Lake O, supports firefighting in Everglades National Park

    The U.S. Army Corps of Engineers Jacksonville District will continue flows from the W.P. Franklin Lock and Dam (S-79) to the Caloosahatchee estuary at a 7-day average rate of 457 cubic feet per second (cfs). Flows to the St. Lucie estuary remain at zero cfs as measured at the St. Lucie Lock and Dam (S-80). Releases are made in a pulse pattern which begin on Saturday. In addition, our partners at the South Florida Water Management District have coordinated with the Corps as they mobilize pumps and modify water management operations to help control a wildfire in Everglades National Park.

  • 20-019 Parents, are your kids driving you crazy? Looking for something to entertain them with? US Army Corps of Engineers is here to help!

    AHSAHKA, Idaho – The U.S. Army Corps of Engineers (USACE) would like to introduce you to a new seven week online education program.

  • Alternate Care Facility construction complete in Michigan

    DETROIT – The U.S. Army Corps of Engineers, Detroit District, announces that construction is complete at Michigan’s second Alternate Care Facility at Suburban Collection Showplace in Novi. The facility is expected to begin accepting patients by the end of the week. The Suburban Collection Showplace Alternate Care Facility is one of the first in the Nation to be turned over to the state. Modeled after the TCF Regional Care Center in Detroit, construction included a triage area, patient support services such as showers and toilets, staff changing areas and administrative space, a command center and pharmacy. The 250,000 square foot conversion of the convention center into a medical facility with 250 bed spaces was originally designed to a capacity of up to 1,100 beds. “Engineering solutions to the Nation's toughest challenges is what we do,” said Lt. Col. Gregory Turner, commander, USACE, Detroit District. “We've worked closely with the State of Michigan to respond to the evolving situation in Michigan and to rapidly deliver projects to help our communities.”

  • Primary Construction Work Completed at Harpersfield Dam

    All major work within the Grand River has been completed by the U.S. Army Corps of Engineers, Buffalo District of the Harpersfield Dam Sea Lamprey Barrier project located on the Grand River, in the town of Geneva, Ohio, with funding through the Great Lakes Restoration Initiative and the non-federal partners.

  • Corps of Engineers awards a $500k contract for the Next NGA West Integrated Project Office’s janitorial services

    The U.S. Army Corps of Engineers has awarded a multiyear contract to a St. Louis, Missouri company for a total of $491,279.81 to provide the Next NGA West Integrated Project Office’s Janitorial Services. Dala Worldwide Services, a Minority Women-Owned Small Business, will provide janitorial services for the on-site office space throughout the construction of the Next NGA West.