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  • Annual sediment flushing exercise scheduled at Cherry Creek Reservoir

    The U.S. Army Corps of Engineers, Omaha District, will conduct its annual sediment flushing exercise at Cherry Creek Reservoir, Colorado, Wednesday, May 26.

  • ERDC partnership with University of Maine delivers innovative military engineering technology

    For researchers at the U.S. Army Research and Development Center (ERDC), long-term strategic partnerships with industry and academia are essential in executing ERDC’s mission in support of Army modernization and U.S. Army Corps of Engineers civil works, as well as the needs of other sponsors and stakeholders.

  • Arkansas channel cleanout project ‘Ready to Advertise’

    In support of the district's flood risk management mission, the Memphis District regularly plans and executes projects to maintain and repair channels and levees as needed. Most recently, a project called "The Locus Creek Channel Cleanout", recently reached a significant milestone known as "Ready to Advertise" (RTA). "Ready to Advertise" means the project package has been sent to the district contracting team for awarding this fiscal year. The work to be done is in the Craighead County, Arkansas area. According to PDT Project Manager Amber Jarnagin, Locust Creek has been experiencing debris blockages that aren't allowing proper channel drainage.

  • Suppressing the pressure-source instability in modeling deep-draft vessels with low under-keel clearance in FUNWAVE-TVD

    Abstract: This Coastal and Hydraulics Engineering Technical Note (CHETN) documents the development through verification and validation of three instability-suppressing mechanisms in FUNWAVE-TVD, a Boussinesq-type numerical wave model, when modeling deep-draft vessels with a low under-keel clearance (UKC). Many large commercial ports and channels (e.g., Houston Ship Channel, Galveston, US Army Corps of Engineers [USACE]) are traveled and affected by tens of thousands of commercial vessel passages per year. In a series of recent projects undertaken for the Galveston District (USACE), it was discovered that when deep-draft vessels are modeled using pressure-source mechanisms, they can suffer from model instabilities when low UKC is employed (e.g., vessel draft of 12 m¹ in a channel of 15 m or less of depth), rendering a simulation unstable and obsolete. As an increasingly large number of deep-draft vessels are put into service, this problem is becoming more severe. This presents an operational challenge when modeling large container-type vessels in busy shipping channels, as these often will come as close as 1 m to the bottom of the channel, or even touch the bottom. This behavior would subsequently exhibit a numerical discontinuity in a given model and could severely limit the sample size of modeled vessels. This CHETN outlines a robust approach to suppressing such instability without compromising the integrity of the far-field vessel wave/wake solution. The three methods developed in this study aim to suppress high-frequency spikes generated nearfield of a vessel. They are a shock-capturing method, a friction method, and a viscosity method, respectively. The tests show that the combined shock-capturing and friction method is the most effective method to suppress the local high-frequency noises, while not affecting the far-field solution. A strong test, in which the target draft is larger than the channel depth, shows that there are no high-frequency noises generated in the case of ship squat as long as the shock-capturing method is used.

  • Corps to host virtual public meeting for Former Camp Sherman Artillery Range

    The USACE invites the community to attend a virtual public meeting to learn more about the site and proposed cleanup plan on Wednesday, May 19, at 6:00 p.m. Meeting details, including login information, can be found online at: https://go.usa.gov/xHEjD

  • Corps removes about 250 tons of debris at Santa Fe Dam

    Amid dense vegetation and boulders at the foot of the Santa Fe Dam Spillway, the Operations Division with the U.S. Army Corps of Engineers Los Angeles District is clearing tons of litter and debris from a homeless encampment in Irwindale, California.

  • Building dams and, we hope, public trust

    I take pride in knowing my organization, the U.S. Army Corps of Engineers’ Portland District, has played an important role in the story of how our country taps into our water resources like the Willamette River. On April 17, the district celebrated 150 years of serving Oregon and southwestern Washington.    

  • Mississippi River Visitor Center at Locks and Dam 15 set to reopen May 23

    The U.S. Army Corps of Engineers, Rock Island District, announces the Mississippi River Visitor Center at Locks and Dam 15 on the Rock Island Arsenal will reopen to the public Sunday, May 23. Summer visiting hours through Labor Day weekend will be from 9 a.m.-5 p.m. seven days a week.

  • Sam Rayburn Reservoir and Town Bluff Dam continue flood operations

    The U.S. Army Corps of Engineers, Fort Worth District, in keeping with its flood risk reduction charter, continues to monitor and manage recent flooding at Sam Rayburn Reservoir and B.A. Steinhagen Lake/Town Bluff Dam in Texas. Water releases from Town Bluff Dam were increased due to inflow in the Neches River Basin above the reservoir and weather conditions in the area. Currently, releases out of Town Bluff are approaching 40,000 cubic feet per second.  The Fort Worth District has notified impacted emergency managers of these circumstances and the potential for downstream flooding. 

  • Hartwell Lake visitor center to reopen May 24

    SAVANNAH, Ga. – The U.S. Army Corps of Engineers, Hartwell Project Office, will reopen the project’s visitor center May 24, after more than a year of closure due to the COVID-19 pandemic.