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  • LA District hosts Iron King Mine Project Industry Day

    The U.S. Army Corps of Engineers Los Angeles District’s Mega Projects Division hosted the Iron King Mine Project Industry Day Jan. 28 at Gateway Community College.

  • Landslide causes temporary closure of Dent Recreation Area

    AHSAHKA, Idaho – Dent Recreation Area will be temporarily closed from March 31 - April 4 due to a landslide on Old Dent Road.

  • Restoration advisory board members selected, first meeting set for Buxton FUDS property

    SAVANNAH, Ga. – The U.S. Army Corps of Engineers, Savannah District, announces the Restoration Advisory Board membership has been established and the first meeting is scheduled for April 10, 2025, at 6:30 p.m., for the Buxton Naval Facility, a Formerly Used Defense Sites Program property located within the Cape Hatteras Seashore in Dare County, North Carolina.

  • Headwaters Highlights: A tiny team maintains mighty Mahoning Dam daily

    Tucked into a sleepy creek valley of Western Pennsylvania, the Mahoning Creek Dam has stood for 84 years, holding back waters to protect communities from flooding.

  • Lake Lanier launches ‘Pack In, Pack Out’ approach at East Bank Park & Buford Dam Park

    Starting this summer, the U.S. Army Corps of Engineers at Lake Lanier will implement a “Pack In, Pack Out” policy at East Bank Park and Buford Dam Park to support cleaner public spaces and encourage visitor responsibility.

  • Managing the Cumberland River: How the Corps works to reduce flood risk

    When heavy rain falls across Tennessee and Kentucky, many people wonder: What is the U.S. Army Corps of Engineers doing to manage the water? The answer is a complex, coordinated effort involving monitoring, real-time decision-making, and strategic dam operations designed to reduce flood risks along the Cumberland River system. While flood control is one of the Corps’ primary missions, the reality is that nature does not always cooperate. The USACE Nashville District’s highly trained engineers, dam operators, and other water management professionals carefully balance the flow of water through the system—holding back water when possible and releasing it in a controlled manner to minimize damage downstream.

  • U.S. Army Corps of Engineers issues scoping letter for Shingle Creek Feasibility Study

    JACKSONVILLE, Fla. (March 31, 2025) – The U.S. Army Corps of Engineers, Jacksonville District is beginning preparation of a National Environmental Policy Act (NEPA) document for the Shingle Creek and Kissimmee River Flood Resiliency Study, referred to hereafter as the Shingle Creek Feasibility Study, in partnership with our non-Federal sponsor, Osceola County, Florida. The project was authorized by section 201(a)(5) of the Water Resources Development Act of 2020, Public Law 116-260, for flood risk management and section 8201(b)(2) of the Water resources Development Act of 2022, Public Law 117-263

  • Effects of Thermal Modification on the Flexure Properties, Fracture Energy, and Hardness of Western Hemlock

    Abstract: This study investigates the effect of thermal modification on the flexural properties, transverse fracture energy, and hardness of western hemlock. Flexure tests on specimens featuring longitudinal and transverse grains showed that thermal modification at 167 °C leads to less statistical variability compared to unmodified samples. Additionally, thermal modification leads to a decrease in the transverse flexural strength. On the other hand, the fracture and Janka hardness tests revealed a more pronounced brittleness of the thermally modified samples. The total mode I fracture energy of modified single-edge notch bending samples was about 47% lower for radial–longitudinal systems and 60% lower for tangential–longitudinal systems. Similarly, the average Janka hardness in the tangential and transverse planes was 8.5% and 9.4% lower in the modified specimens, respectively. The results presented in this work show that thermal modification can have a significant effect on the fracturing behavior of west-ern hemlock and its energy dissipation capabilities. For design, this must be taken into serious consideration as these properties significantly influence the damage tolerance of this wood in the presence of stress concentrations such as those induced in bolted joints and cut outs. Fracture energy and hardness are also strongly correlated to ballistic performance.

  • USACE Relief Wells for Dams and Levees: History and Current Practice

    Abstract: The purpose of this study was to review relief well practices within the United States Army Corps of Engineers (USACE). A literature review was performed on the history and use of relief wells relief and the state of practice within the USACE. As part of this study, a survey about relief well use and maintenance practice was prepared and distributed to selected Districts containing a large number of relief wells to determine their standard operating procedures for using those wells and to learn the history of their use. Responses obtained from these Districts were tabulated and classified according to the subject categories requested. Research needs and tools were requested as part of the survey, and a large portion of the responses indicated that there is an important need for research into biofouling prevention and remediation. Finally, a laboratory experiment was performed on several commercial-off-the-shelf sensors to measure effluent flow remotely. The results of the experiment showed that remote sensing of relief well flow is viable. It was found that pore pressures could be used to measure the relief well flows over a wide range of flow rates and with an error of 10 percent or less on average. Ultrasonic sensors also performed well during testing, with an average error of 10 percent or less.

  • ERDC leads demonstration of hydrogen fueled equipment at National Guard site in Illinois

    The U.S. Army Engineer Research and Development Center's (ERDC) Construction Engineering Research Laboratory (CERL) is advancing energy resiliency and reliability by using hydrogen as a sustainable, renewable energy source. ERDC-CERL is spearheading research and development efforts to integrate hydrogen energy solutions into military operations, aiming to provide clean backup energy systems that enhance the energy independence of Department of Defense (DoD) installations.