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Archive: November, 2020
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  • 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.
  • Northbound lane of Highway 187 across Beaver Dam to temporarily close

    The U.S. Army Corps of Engineers is closing the northbound lane of the Arkansas Highway 187 bridge across Beaver Dam from Nov. 9 until Feb. 9, 2021, for repairs to components on the downstream face of the dam.
  • Corps announces approval of an emergency deviation to provide relief from high water levels in the Everglades

    The U.S. Army Corps of Engineers Jacksonville District announces the approval of an emergency deviation to the Combined Operational Plan (COP) Water Control Plan to provide relief from high water levels in the Everglades.
  • USACE plans prescribed burns around Bull Shoals and Norfork lakes

    Personnel from the U.S. Army Corps of Engineers Mountain Home Project Office and the Arkansas Game and Fish Commission will conduct prescribed burns on public land surrounding Bull Shoals and Norfork lakes until Dec. 31.

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