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  • Corps begins "delicate dance" as possibility of drought looms

    Erik Petersen, Willamette Valley Project operations project manager, speaks to current conditions, potential impacts and related challenges throughout the Valley.

  • Hurricane Risk Reduction Measures coming to the Rockaways

    The U.S. Army Corps of Engineers, New York District announces the first contract award for the East Rockaway Inlet to Rockaway Inlet and Jamaica Bay, New York Coastal Storm Risk Reduction Project. This is the first of several contracts that will provide nearly $600 million in federal investment for the construction of storm risk reduction infrastructure on both the Atlantic Ocean shoreline and the Jamaica Bay shoreline of the Rockaway Peninsula.

  • 20-021 Corps seeks public input for Ice Harbor Master Plan Revision

    BURBANK, Wash.– The U.S. Army Corps of Engineers’ Walla Walla District (Corps) invites the public to provide scoping comments for its upcoming revision of the Ice Harbor Master Plan. The Corps will be accepting comments from May 1 through June 15, 2020.

  • Memphis Builders: Behind the mask

    Walking around the Alternate Care Facility construction site, people are usually focused on what workers are doing, not so much the people themselves. And if you’re like me, you’re also very focused on the ground as you don’t want to trip and fall over something as simple as a little cord. But, it’s important to get to know the people doing the work. They are the ones making this facility a reality after all. They are also the people sacrificing time with their families, working 12 hours a day and seven days a week.

  • Reading Ranger

    Since the COVID-19 concerns have forced Corps staff and visitors to our projects into practicing safe social distancing, the search is on for creative ways to continue doing our work, and Natural Resource Specialist Kara Wagner, a Park Ranger at Alum Creek Lake in Lewis Center, Ohio, found a great way to reach out to a young audience. 

  • Dover Dam Days Virtual Tour ​

    Visitors look forward to the annual tours of Dover Dam in May, but this year the public visits are canceled because of the COVID-19 restrictions – but the rangers aren't going to let that shut down the event.

  • Thank you: Building a facility of hope

    The team of people building a facility made to care for people who contract the COVID-19 virus are working around the clock to make sure that if our local hospitals can't handle the caseload at that time, no one gets turned away. We want to thank all of our workers out there making this alternate care center ha reality. No matter what part of the team a worker is on, each is important and contributes an invaluable knowledge and skill to this facility of hope and care.

  • MKARNS Nav Notice SWL 20-24 Dredging and Sailing Instruction Update NM 23, NM 49.9

    MKARNS - Dredging at NM 23(noted in SWL 20-23) is complete and the sailing instruction (noted in SWL 20-05) is lifted.

  • PUBLICATION NOTICE: Baldcypress (Taxodium distichum) at the Wallisville Lake Project: A Review of Applicable Literature and Management Considerations

    Abstract: Changing hydropatterns within the Wallisville Lake Project, near the mouth of the Trinity River in Chambers and Liberty Counties, Texas, have the potential to alter baldcypress forest resiliency. Increasing water levels support saltwater barrier operations while maintaining navigation and recreational access. However, potential impacts of increased water levels on the baldcypress forests are of particular concern because these ecosystems provide unique ecological value and wildlife habitat. The maintenance, succession, and resiliency of baldcypress under various flooding, salinity, and inundation regimes remain poorly defined and pose challenges to resource managers. This report reviews available literature pertaining to salinity and inundation impacts to baldcypress forests. Specific emphasis is placed on the ecological effects of water quality and quantity on the health and persistence of baldcypress. The information gathered in this report is intended to supplement material in the Wallisville Lake Project Water Control Manual to improve management of baldcypress forest conditions and avoid negative ecological impacts. Additionally, this report provides management considerations designed to maintain or enhance baldcypress forests within the Wallisville Lake Project.

  • PUBLICATION NOTICE: Lower Columbia River Adaptive Hydraulics (AdH) Model: Development, Water Surface Elevation Validation, and Sea Level Rise Analysis

    Abstract: A numerical model of the Lower Columbia River, validated to water surface elevations, has been generated using the Adaptive Hydraulics (AdH) code. The model boundary conditions include an ocean tidal boundary and five inflows: the Lewis, Cowlitz, Willamette, and Sandy Rivers, and the Columbia River at Bonneville Lock and Dam. The model, which spans approximately 146 river miles, accurately reproduces water surface elevations measured in the field at several locations along the model domain. An examination of the AdH model’s Friction Library was also conducted. The Friction Library was used in this application to estimate the effects of pile dikes. Rather than model individual piles in the model mesh, the piles were modeled using the Friction Library’s submerged vegetation material type. Through testing of this application, it was determined that the Friction Library approach, which enhances model run time and efficiency, can accurately reproduce the global effects of pile dike fields. Additionally, the validated model was used to analyze three sea level rise (SLR) scenarios, which correspond to predicted SLR at Astoria, OR, at 50, 75, and 100 years from the present (0.5 meter [m], 1.0 m, and 1.5 m, respectively).