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  • VE program stays course despite COVID shutdown

    The COVID-19 pandemic has changed the way Huntsville Center does business, but it has not changed the business we do. For the Center’s Value Engineering (VE) Program, that means implementing innovative solutions to continue helping the Center’s programs provide high-quality work in the most efficient and cost-effective manner. Through collaborative workshops to evaluate methods and processes, the program increases value and stretches taxpayer resources by proactively searching for and resolving issues. The Corps of Engineers requires all Huntsville Center programs to conduct a VE study once every five years.

  • Army Corps awards contract for construction of upland Dredge Material Management Area and stormwater modifications at the Martin County Business Park in Jensen, Florida

    U.S. Army Corps of Engineers, Jacksonville District, has awarded a $4,173,500 contract to Dickerson Florida, Inc., of Fort Pierce, Florida, for the construction of an upland Dredge Material Management Area (DMMA) O-23 and modifications to the stormwater management system within the Martin County Business Park in Jensen Beach, Martin County, Florida.

  • Jacksonville District, U.S. Army Corps of Engineers, awards contracts for maintenance dredging of Tampa Harbor Upper Channels, Alafia River

    U.S. Army Corps of Engineers, Jacksonville District, awarded a contract Sept. 20, 2021for the maintenance dredging of the Tampa Harbor Upper Channels to Orion Marine Construction, Inc., of Tampa, Florida, in the amount of $3.45 million.

  • Corps awards contract for maintenance dredging of Palm Beach Harbor

    U.S. Army Corps of Engineers, Jacksonville District, has awarded a $5,911,728 contract to Cashman Dredging & Marine Contracting Co., LLC, of Quincy, Massachusetts, for maintenance dredging of Palm Beach Harbor, Florida. The project, undertaken in partnership with the Port of Palm Beach, will be 100 percent federally funded.

  • Another year of success as USACE, SCDNR host 7th Annual Warrior Dove Hunt

    On the 20th anniversary of the September 11th terrorist attacks, 32 veterans participated in the 7th annual Wounded Warriors and Veterans Dove Hunt at the U.S. Army Corps of Engineers’ Cooper River Rediversion Project.

  • Cagle joins the ERDC’s Coastal, Hydraulics Laboratory

    Taylor Cagle has joined the Hydrologic Systems Branch in the Coastal and Hydraulics Laboratory (CHL) at the U.S. Army Engineer Research and Development Center (ERDC).

  • Green River Lock and Dam 5 removal improves safety, enhances habitat

    A steady downpour and muddy terrain could not keep five conservation partners from celebrating the

  • Virtual Public Meeting Notice for Beech Fork Lake and East Lynn Lake Regional Master Plan

    You are invited to participate in a public meeting regarding the US Army Corps of Engineers’ preparation of a Regional Master Plan Update for Beech Fork and East Lynn Lakes.  The purpose of the meeting is to obtain public input on the preliminary resource objectives and recommendations that have been drafted.  A master plan is the strategic land use management document that guides the management and development of all recreational, natural, and cultural resources of the projects.  

  • WATERFOWL HUNTING PROCEDURES ANNOUNCED FOR THE OKAW WETLANDS

    Lake Shelbyville– Due to high water this summer, all hunting in Okaw Wetlands and Whitley Potholes will be in accordance with statewide regulations. There will not be pit blinds or skid blinds available this year. The handicap blind in the Okaw Wetland will still be reservable this season, and is located in the same location as years past. Hunters not hunting in the handicap blind will have to follow the state minimum distance regulation of 200 yards between groups. For questions or to reserve the handicap blind contact Park Ranger Taylor Finks at (217) 774-3951 Ext. 7028 or at taylor.m.finks@usace.army.mil. -30-

  • Extra-Wide-Angle Parabolic Equations in Motionless and Moving Media

    Abstract: Wide-angle parabolic equations (WAPEs) play an important role in physics. They are derived by an expansion of a square-root pseudo-differential operator in one-way wave equations, and then solved by finite-difference techniques. In the present paper, a different approach is suggested. The starting point is an extra-wide-angle parabolic equation (EWAPE) valid for small variations of the refractive index of a medium. This equation is written in an integral form, solved by a perturbation technique, and transformed to the spectral domain. The resulting split-step spectral algorithm for the EWAPE accounts for the propagation angles up to 90􀀁 with respect to the nominal direction. This EWAPE is also generalized to large variations in the refractive index. It is shown that WAPEs known in the literature are particular cases of the two EWAPEs. This provides an alternative derivation of the WAPEs, enables a better understanding of the underlying physics and ranges of their applicability, and opens an opportunity for innovative algorithms. Sound propagation in both motionless and moving media is considered. The split-step spectral algorithm is particularly useful in the latter case since complicated partial derivatives of the sound pressure and medium velocity reduce to wave vectors (essentially, propagation angles) in the spectral domain.