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  • River training structure repairs progressing on Missouri River: Bipartisan Infrastructure Law pivotal

    The flood of 2019 made apparent the need for extensive repairs on the Missouri River training devices – dikes and revetments – that direct the downstream flow into the navigation channel to keep it deep enough for boat traffic and generally clear of debris. The Bipartisan Infrastructure Law allocated $248 million to repair those devices that are on the lower stretch of the Missouri River.

  • Corps of Engineers has public meeting for Former Conway Bombing, Gunnery Range

    CONWAY, SC. -- The U.S. Army Corps of Engineers (USACE), Savannah District, has scheduled a public meeting for July 12, 2023, at 6 p.m. at Horry County Memorial Library-Conway, 801 Main Street, Conway, South Carolina, 29526 - and plans to propose no action be taken at the former Conway Bombing and Gunnery Range (Conway BGR) – Munitions Response Site (MRS) 07 in Conway, South Carolina.

  • Corps of Engineers to begin dredging, beach nourishment in South Haven

    The U.S. Army Corps of Engineers, Detroit District will begin hydraulically dredging the federal navigation channel and nourishing the South Haven Harbor shoreline next week. In coordination with the City of South Haven, the Corps of Engineers will dredge 57,300 cubic yards of material from the Black River Federal Channel. The tested-safe material will then be placed on South Haven’s public South Beach from the South Pier and extending 1,900 feet southward for beach nourishment.

  • ERDC Alumni Association presents scholarships to eight high-school graduates

    Members of the ERDC Alumni Association gathered with current ERDC employees, students and their families to present scholarships awarded by the alumni association this year to local high-school graduates.

  • USACE to host public information session for new 1,200-foot lock chamber at LaGrange Lock and Dam

    The U.S. Army Corps of Engineers, Rock Island District, is hosting a public information session, July 11, from 6-8 p.m. to provide review of the preliminary design plan for a new 1,200-foot lock chamber being designed for the LaGrange Lock and Dam on the Illinois Waterway near Beardstown, Illinois.

  • US Air Force Academy Gallagher and Massey Ranch Houses: Historic American Buildings Surveys CO-237, CO-237-A, and CO-238

    Abstract: The US Congress codified the National Historic Preservation Act of 1966 (NHPA), the nation’s most effective cultural resources legislation to date, mostly through establishing the National Register of Historic Places (NRHP). The NHPA requires federal agencies to address their cultural resources, which are defined as any prehistoric or historic district, site, building, structure, or object. Section 110 of the NHPA requires federal agencies to inventory and evaluate their cultural resources, and Section 106 requires them to determine the effect of federal undertakings on those potentially eligible for the NRHP. The US Air Force Academy is located at the base of the Front Range within El Paso County. The US Air Force Academy has been used for training US Air Force officers since 1954. The Gallagher Ranch House and its associated garage, erected circa 1953, and the Massey Ranch House, erected 1941, are eligible for the National Register of Historic Places. This report documents the buildings to the standards of the Historic American Buildings Survey and includes a historic context, architectural descriptions, photographs, and measured drawings. This report satisfies Sections 106 and 110 of the National Historic Preservation Act of 1966 as amended and will be used by the US Air Force Academy for mitigation, allowing for the demolition of the three buildings.

  • USACE Omaha District's historic project and dam safety mission in Jamestown, North Dakota

    The U.S. Army Corps of Engineers, Omaha District, in partnership with the prime contractor, Barnard Construction Company, held a groundbreaking ceremony May 25, 2023 for a large-scale spillway project at Pipestem Dam in Jamestown, North Dakota.

  • U.S. Army Corps of Engineers, Hartwell Lake, buoys inspection results

    HARTWELL LAKE, Ga. and S.C. - The U.S. Army Corps of Engineers, Savannah District, recently conducted an “Aids to Navigation” inspection on Hartwell Lake to inventory all buoys, shoal markers and other navigational aids to ensure proper placement, working condition and visibility.

  • Warning signs on the horizon bring visibility to an invisible danger

    Inexperienced boaters face hidden dangers on the Allegheny River that could result in severe injury or death if they don’t pay attention.

  • Development of Alternative Air Filtration Materials and Methods of Analysis

    Abstract: Development of high efficiency particulate air (HEPA) filters demonstrate an effort to mitigate dangerous aerosol hazards at the point of production. The nuclear power industry installs HEPA filters as a final line of containment of hazardous particles. An exploration of analytical, experimental, computational, and machine learning models is presented in this dissertation to advance the science of air filtration technology. This dissertation studies, develops, and analyzes alternative air filtration materials and methods of analysis that optimize filtration efficiency and reduce resistance to air flow. Alternative nonwoven filter materials are considered for use in HEPA filtration. A detailed review of natural and synthetic fibers is presented to compare mechanical, thermal, and chemical properties of fibers to desirable characteristics for air filtration media. Digital replication of air filtration media enables coordination among experimental, analytical, ma-chine learning, and computational air filtration models. The value of using synthetic data to train and evaluate computational and machine learning models is demonstrated through prediction of air filtration performance, and comparison to analytical results. This dissertation concludes with discussion on potential opportunities and future work needed in the continued effort to advance clean air technologies for the mitigation of a global health and safety challenge.