• Kootenai River Basin experiences another dry year, declining Lake Koocanusa inflows

    According to U.S. Army Corps of Engineers (USACE), Seattle District, Water Management officials, 2025 is shaping up to be one of the driest years on record for Lake Koocanusa, with extremely low precipitation and a mostly depleted snowpack.
  • U.S. Army Corps of Engineers celebrated ribbon cutting for Harlan County Salt Cedar Ecosystem Restoration Project

    The Kansas City District, U.S. Army Corps of Engineers, in partnership with the Nebraska Game and Parks Commission, was proud to host a ribbon cutting ceremony for the Harlan County Salt Cedar Ecosystem Restoration Project at Methodist Cove, Harlan County Lake, Nebraska. The event took place on Tuesday, June 24, 2025, at the main campground shelter in Methodist Cove.
  • Wilson Lock expected to reopen soon

    FLORENCE, Ala. (June 26, 2025) – The U.S. Army Corps of Engineers Nashville District officials report that Wilson Lock at Tennessee River mile 259.4 is expected to reopen on or about June 30, 2025. 
  • Pacific Ocean Division Welcomes Command Sgt. Maj. Zachary R. Plummer

    Command Sgt. Maj. Zachary R. Plummer assumed responsibility as the new Pacific Ocean Division (POD) Command Sergeant Major at a June 25 ceremony at Ft. Shafter, Hawaii.
  • Dworshak Dam to increase releases beginning June 25th

    AHSAHKA, Idaho – Dworshak Dam releases will increase from 3,200 cubic feet per second (cfs) on Thursday, June 26, to 10,000 cfs by Sunday, June 29, for flow augmentation.
  • Building together: USACE highlights regional needs, invites business innovation

    The Society of American Military Engineers (SAME) Northwest Posts hosted the Meet the Chiefs 2025 Regional Event on June 17, at the Seattle Airport Marriott. This gathering brought together leaders from key federal agencies and industry partners for a full day of strategic insights, networking, and future planning.
  • Congressman Michael Collins tours Army Corps projects in Puerto Rico and the U.S. Virgin Islands

    SAN JUAN, PUERTO RICO – The Honorable Michael Collins (R-GA) recently concluded a three-day tour of Army Corps of Engineers projects across Puerto Rico and the U.S. Virgin Islands, gaining firsthand insight into the initiatives spearheaded by the Corps’ newest district—the Caribbean District.
  • Community Cove Welcomes New Kayak Launch and Pollinator Field

    The area of public lands designated as Dam West High Water Boat Ramp, commonly referred to as “Community Cove”, recently acquired a new kayak launch and pollinator plots through various partnerships and grants. The “Community Cove” area includes the Dam West High Water Boat Ramp as well as public lands directly encompassing the boat ramp. This area extends West to Forest Park, South to the 9th Street and Dam Road intersections, and East to the Dam West Recreation Area.
  • Louisville District’s Humphrey selected as LRD Chief of Operations and Regulatory

    The U.S. Army Corps of Engineers (USACE) Louisville District’s Chief of Operations, Mr. Waylon Humphrey, has been selected to serve as the Chief of Operations and Regulatory for the USACE Great Lakes and Ohio River Division (LRD)
  • Bioconcentration, Maternal Transfer, and Toxicokinetics of PFOS in a Multi-Generational Zebrafish Exposure

    Abstract: To enable risk characterization of perfluorooctane sulfonic acid in extended chronic and multi-generational exposures, we assessed PFOS bioconcentration in zebrafish exposed continuously to environmentally-relevant PFOS concentrations through 180 days postfertilization in parental and first filial generation fish. Exposures included five replicate tanks per treatment where whole-body PFOS concentrations were measured. Perfluorooctane sulfonic acid accumulation reached an apparent steady state at ≤ 14 dpf where whole-body wet-weight concentrations remained constant through 180 dpf in the P and F1 generations. The median bioconcentration factor of 934 L/kg was observed for all PFOS exposures with a range from 255 to 2,136 L/kg which varied with PFOS exposure concentration and sex of adult fish. Maternal transfer of PFOS was observed from P females to F1 eggs where maternal whole-body and egg PFOS burdens were equivalent, suggesting PFOS transfer to eggs was not a depuration pathway. Finally, a toxicokinetic model was developed that reliably reproduced PFOS whole-body burdens across all exposure durations spanning the P and F1 generations, providing a tool for PFOS bioaccumulation predictions relevant for risk assessment of acute, chronic, and multi-generational exposures.