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  • USACE partners with USCG to conduct security drills at McAlpine Locks and Dam

    The U.S. Army Corps of Engineers Louisville District hosted personnel from the U.S. Coast Guard, and

  • Detection and Decay of Different Classes of Environmental RNA (eRNA) from Zebrafish (Danio rerio)

    Purpose: This technical note contributes to the growing body of knowledge about macroscopic eukaryotic environmental RNA (eRNA) by exploring detection and decay for several different zebrafish (Danio rerio) eRNAs in a mesocosm setting. The study addressed four basic hypotheses: (1) D. rerio would deposit detectable levels of eRNA into water, (2) different classes of eRNA would be detected, (3) different eRNA sequences (for example, loci) would degrade at different rates, and (4) abiotic and biotic factors would influence rates of degradation. For the last hypothesis, we tracked eRNA concentration decay under treatments with different water temperatures and levels of microbiological activity, two factors known to significantly influence environmental DNA (eDNA) decay (Barnes et al. 2014; Lance et al. 2017; Nielsen et al. 2007; Strickler et al. 2015).

  • Soldier, Brewer, Drill Sergeant, and more: The journey of ERDC’s Trey Burchfield

    Trey Burchfield brings a wealth of diverse experience to the U.S. Army Engineer Research and Development Center's Construction Engineering Research Laboratory in his current role in the Materials and Structures Branch.

  • Smokey Bear’s Ranger Hat

    80 years is a tremendous milestone—for anyone. To make it to 80 means you have overcome life’s greatest challenges and you truly become the elder, the sage, the one who knows a thing or two and should be listened to. Being the spokes-bear, if you will, of the longest running and most successful advertising campaign in American history, at 80 years old, I think Smokey Bear would agree, so does Lake Shelbyville.

  • Clearing the way for navigation at Elizabeth

    The U.S. Army Corps of Engineers Pittsburgh District is prioritizing the opening of a 100-foot-wide navigation channel through the dam at Monongahela River Locks and Dam 3 near Elizabeth, Pennsylvania, by August 28.

  • U.S. Army Corps of Engineers and Kentucky Lock contractor celebrate safety milestone

    GRAND RIVERS, Ky. — The U.S. Army Corps of Engineers Nashville District, in partnership with the contractor currently working on the Kentucky Lock project, Thalle Construction, celebrated a significant safety milestone with a ceremony, July 30, 2024. The event honored the achievement of surpassing one million man-hours without a lost time accident, a testament to the unwavering commitment to safety by all involved.

  • Memphis District section chief named 2024 Geotechnics Professional of the Year

    The U.S. Army Corps of Engineers (USACE) Headquarters Engineering and Construction Division announced in June that Nicholas "Nikko" Aleman, the Geotechnical Section Chief for the Memphis District (MVM), is the recipient of this year's Timothy Skeen Geotechnics Professional of the Year award.

  • Reservoir Sediment Deltas of the Southwestern United States: Challenges and Opportunities for Riparian Vegetation Management

    Purpose: This technical note summarizes methods used to identify 58 reservoir sediment deltas in the Southwestern United States and California, behind 47 different dams, with potential regional importance as breeding or migratory stopover habitat for three species of riparian vegetation–dependent birds listed under the Endangered Species Act[1]: least Bell’s vireo (LBVI) (Vireo bellii pusillus), southwest willow flycatcher (SWFL) (Empidonax traillii extimus), and yellow-billed cuckoo (YBCU) (Coccyzus americanus). Information on inflow streams, drainage area, and management authority are provided for each delta. This technical note recommends follow-up research on the temporal dynamics of vegetation colonization, growth, and mortality on these deltas to explore the potential value of these geographically widespread hydrogeomorphic features on arid-land rivers for the conservation of riparian vegetation–dependent birds.

  • Success Lake Vista Point Overlook to close for 4-6 weeks

    The Vista Point Overlook parking area at Success Lake will be closed for four to six weeks starting

  • Legacy of love: How one man continues to volunteer in honor of his late wife

    Randy and Lisa Smith dedicated nearly two decades of their lives volunteering together with the U.S. Army Corps of Engineers, assisting rangers at campgrounds, lakes and day use areas. Their journey began in 2004 when they first volunteered with USACE at the Mill Creek Campground at Berlin Lake in Ohio. Their volunteer work continued with USACE, Savannah District at J. Strom Thurmond Lake in South Carolina.