News Stories

  • January

    ERDC partners with University of Southern Mississippi to maximize Gulf oyster habitat restoration

    The U.S. Army Engineer Research and Development Center (ERDC) has announced a three-year research collaboration with the University of Southern Mississippi (USM) to create oyster reef habitat in the northern Gulf of Mexico.
  • JED STEM Reaffirmation

    U.S. Army Corps of Engineers – Japan District renewed their commitment to the nation’s emerging scientists and engineers with the signing of a Memorandum of Understanding uniting Japan Engineer District and Zama Middle High School at JED’s headquarters here Jan. 19.
  • Ribbon-cutting ceremony for Hopefield Point completion

    The Memphis District Commander Col. Zachary Miller, district leadership, and members of the Project Delivery Team gathered on the Mississippi Riverbanks in Arkansas for a ribbon-cutting ceremony to celebrate the completion of a bank armoring project, Wednesday, Jan. 20, 2021.
  • A look back: Kuykendoll Cash’s 35 years of service

    Congratulations to Project Management Branch Chief Regina Kuykendoll Cash, who retired from the Memphis District after serving about 35 years of federal service. To celebrate her, we take a look back at her many years of service and recognize her for most everything she’s done, not just for the Memphis District, but also for our Nation.
  • Cumberland River Aquatic Center flexes its mussels with Corps mitigation dollars

    NASHVILLE, Tenn. (Jan. 22, 2021) – It took 12 years, but a $750,000 mitigation effort culminated in late 2020 that helped the Cumberland River Aquatic Center to propagate mussels and other aquatic species.
  • Deep Creek Bridge Project receives $12.6M in USACE Work Plan

    WASHINGTON - The U.S. Army Corps of Engineers (USACE) delivered to Congress its Fiscal Year 2021 (FY 2021) Work Plan for the Army Civil Works program on January 19, 2021, which included funding appropriations for the Deep Creek Bridge Replacement Project in Chesapeake, Virginia in the amount of $12,657,000.
  • Corps’ top leaders tour, receive update on VA Long Beach Healthcare System projects

    Top leaders with the U.S. Army Corps of Engineers made a Jan. 13 site visit to the Department of Veterans Affairs Long Beach Healthcare System medical complex to see the progress of two projects totaling $350 million.
  • From the Navy to the Army: Andra Homer serves with pride

    Have you ever met someone and just instantly felt like they could be your best friend? Someone who’s energy is so contagious, warm, and welcoming, that you just want to bundle them up and keep them close to you all the time? Someone who looks at the world through a rose-colored lens, where every obstacle is an opportunity? If not, then let me introduce you to Andra Homer.
  • Unmanned Aircraft pilots take USACE imagery to new heights

    It was a seriously chilly morning, at least by California standards, when U.S. Army Corps of Engineers Sacramento District Public Affairs Specialists John Prettyman and Luke Burns arrived with the sun at Prairie City recreation area near Folsom on Dec. 16. It was a perfect day for training. Windless, the sun burning off light ground fog, a smattering of layered clouds in the distance.
  • Abou-El-Seoud selected as senior economist for USACE Great Lakes and Ohio River Division

    Dena Abou-El-Seoud, economist in the USACE Chicago District’s Planning Branch, has been selected to become the senior economist at the Great Lakes & Ohio River Division’s (LRD) Planning and Policy Division. With yesterday as her official start day, she will be a virtual employee and Chicago District will continue to be her home base. The Chicago District is one of seven districts under LRD.

News Releases

  • Evaluating the Conductive Properties of Melanin-Producing Fungus, Curvularia lunata, after Copper Doping

    ABSTRACT:  Melanins are pigmented biomacromolecules found throughout all do-mains of life. Of melanins’ many unique properties, their malleable electrically conductive properties and their ability to chelate could allow them to serve as material for bioelectronics. Studies have shown that sheets or pellets of melanin conduct low levels of electricity; however, electrical conductance of melanin within a cellular context has not been thoroughly investigated. In addition, given the chelating properties of melanin, it is possible that introducing traditionally conductive metal ions could improve the conductivity. Therefore, this study investigated the conductive properties of melanized cells and how metal ions change these. We measured the conductivity of pulverized Curvularia lunata, a melanized filamentous fungi, with and without the addition of copper ions. We then compared the conductivity measurements of the fungus to chemically synthesized, commercially bought melanin. Our data showed that the conductivity of the melanized fungal biomass was an order of magnitude higher when grown in the presence of copper. However, it was two orders of magnitude less than that of synthetic melanin. Interestingly, conductance was measurable despite additional constituents in the pellet that may inhibit conductivity. Therefore, these data show promising results for using melanized cells to carry electrical signals.
  • A Measurement System for the Study of Nonlinear Propagation Through Arrays of Scatterers

    Abstract: Various experimental challenges exist in measuring the spatial and temporal field of a nonlinear acoustic pulse propagating through an array of scatterers. Probe interference and undesirable high-frequency response plague typical approaches with acoustic microphones, which are also limited to resolving the pressure field at a single position. Measurements made with optical methods do not have such drawbacks, and schlieren measurements are particularly well suited to measuring both the spatial and temporal evolution of nonlinear pulse propagation in an array of scatterers. Herein, a measurement system is described based on a z-type schlieren setup, which is suitable for measuring axisymmetric phenomena and visualizing weak shock propagation. In order to reduce directivity and initiate nearly spherically-symmetric propagation, laser induced breakdown serves as the source for the nonlinear pulse. A key component of the schlieren system is a standard schliere, which allows quantitative schlieren measurements to be performed. Sizing of the standard schliere is aided by generating estimates of the expected light refraction from the nonlinear pulse, by way of the forward Abel transform. Finally, considerations for experimental sequencing, image capture, and a reconfigurable rod array designed to minimize spurious wave interactions are specified.
  • Army Installations of the Future Industry Day 2019: Summary Report

    Abstract: The Army Installations of the Future Industry Day was held on 23 May 2019 at the Renaissance Capital View hotel in Arlington, VA to identify the availability and maturity of specific commercial off-the-shelf (COTS) “smart installation” capabilities, technologies, and products; and to seek interest from industry in exploring potential approaches, requirements, standards, and/or specifications for pilot demonstrations at Army installations focused on 10 use-case technology areas. The Industry Day event included approximately 336 participants comprised of Academia (5), Industry (226), and Government (105). This report presents “road maps” that outline the Army’s desired outcomes for the target technology areas and potential pilot technology demonstrations.
  • Numerical Analysis of Weak Acoustic Shocks in Aperiodic Array of Rigid Scatterers

    Abstract: Nonlinear propagation of shock waves through periodic structures have the potential to exhibit interesting phenomena. Frequency content of the shock that lies within a bandgap of the periodic structure is strongly attenuated, but nonlinear frequency-frequency interactions pumps energy back into those bands. To investigate the relative importance of these propagation phenomena, numerical experiments using the Khokhlov-Zabolotskaya-Kuznetsov (KZK) equation are carried out. Two-dimensional propagation through a periodic array of rectangular waveguides is performed by iteratively using the output of one waveguide as the input for the next waveguide. Comparison of the evolution of the initial shock wave for both the linear and nonlinear cases is presented.
  • USACE Vicksburg District to use new payment system for fee collection at Lake Ouachita campground

    VICKSBURG, Miss. – The U.S. Army Corps of Engineers (USACE) Vicksburg District will use a new electronic payment system for fee collection at Twin Creek Campground beginning Dec. 1.
  • Hunter Ethics

    CARLYLE LAKE - With the fall hunting season underway, hunters are reminded of their obligation to practice ethical and safe hunting while in the field. Remember, your personal ethics might not match your neighbors, but certain guidelines do pertain to all hunters.
  • TAM Awards Task Order for Saudi Arabia forces

    The U.S. Army Corps of Engineers Middle East District awarded a task order for AE services for the Royal Saudi Land Forces Aviation Command (RSLFAC) Master Planning and Construction Phase 2A Facilities and Infrastructure in the Kingdom of Saudi Arabia.
  • Gavins Point Dam releases to be reduced to winter release rate in late November

    In two virtual public meetings held Nov. 2, U.S. Army Corps of Engineers’ Missouri River Water Management Division presented current hydrologic conditions and planned operation of the Missouri River mainstem reservoir system for the remainder of 2020. Public meetings are held each fall and spring to update the region on current conditions and planned operations. The Nov. 2 meetings included draft plans for operating the system during 2021.
  • Hartwell Lake officials release new shoreline management plan

    SAVANNAH, Ga. – Officials from the Hartwell Dam and Lake Project recently released the latest Shoreline Management Plan (SMP) for the reservoir.
  • Changes for Camping Reservations at Lake Shelbyville

    For Immediate Release: 05 November 2020 Release No.: 21-02 Changes Coming to Lake Shelbyville Campgrounds in 2021 Lake Shelbyville- The U.S. Army Corps of Engineers at Lake Shelbyville would like to announce campground opening dates and policy changes for the 2021 recreation season. Lake Shelbyville had a successful year in 2020 with campsite utilization rates up almost 20%. The 2021 season is projected to be another busy year for outdoor recreation and camping.

Mississippi Valley Division

Institute for Water Resources

South Pacific Division

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