• Army Corps of Engineers waives day use fees at recreation areas in observance of Veterans Day

    The U.S. Army Corps of Engineers announced today that it will waive day use fees at its more than
  • United States Air Force Academy and U.S. Army Corps of Engineers partner on renovation of Cadet Field House

    The Omaha District is currently partnering with the U.S. Air Force to renovate the Cadet Field House athletic facility at the U.S. Air Force Academy in Colorado Springs, Colorado. This facility has been a cornerstone of athletic and academic life since its construction in the mid-1960s and has not undergone a major renovation since it was built.
  • 2023 Integrated Delivery Schedule highlighting unprecedented progress in Everglades Restoration to be released during November 15 South Florida Ecosystem Restoration Task Force Meeting

    The U.S. Army Corps of Engineers, Jacksonville District invites partners, stakeholders, and the public to join us for the release of the 2023 Integrated Delivery Schedule (IDS) at the South Florida Ecosystem Restoration (SFER) Task Force Meeting on Wednesday, November 15, 2023, from 9 a.m. to 3 p.m.
  • MKARNS Nav Notice No. SWL 23-69 UPDATE 2: White River Entrance Channel

    All traffic on the locking queue at Montgomery Point Lock & Dam (NM 0.5) has been cleared and normal locking procedures have begun. However, dredging operations downstream of the Montgomery Point Lock & Dam (NM 0.5) are ongoing.
  • Establishing a Series of Dust Event Case Studies for East Asia

    Abstract: Dust aerosols have a wide range of effects on air quality, health, land-management decisions, aircraft operations, and sensor data interpretations. Therefore, the accurate simulation of dust plume initiation and transport is a priority for operational weather centers. Recent advancements have improved the performance of dust prediction models, but substantial capability gaps remain when forecasting the specific location and timing of individual dust events, especially extreme dust outbreaks. Operational weather forecasters and US Army Engineer Research and Development Center (ERDC) researchers established a series of reference case study events to enhance dust transport model evaluation. These reference case studies support research to improve modeled dust simulations, including efforts to increase simulation accuracy on when and where dust is lofted off the ground, dust aerosols transport, and dust-induced adverse air quality issues create hazardous conditions downstream. Here, we provide detailed assessments of four dust events for Central and East Asia. We describe the dust-event lifecycle from onset to end (or when dust transports beyond the area of interest) and the synoptic and mesoscale environ-mental conditions governing the process. Analyses of hourly reanalysis data, spaceborne lidar and aerosol optical depth retrievals, upper-air soundings, true-color satellite imagery, and dust-enhanced false-color imagery supplement the discussions.
  • Temporary road closure on MacArthur Boulevard during Cabin John Bridge maintenance

    Cabin John Bridge (Union Arch Bridge), located at the 7400 block of MacArthur Boulevard in Montgomery County, is scheduled to close Nov. 4-5 for necessary maintenance work performed by the Washington Aqueduct, a division of the U.S. Army Corps of Engineers, Baltimore District. A street closure and detour will be in place both days from 6:30 a.m. to 3 p.m.
  • Energy Atlas—Mapping Energy-Related Data for DoD Lands: Phase 3—Data and Portal Expansion: Northeast CONUS

    Abstract: The DoD is a significant land user in northeast United States overseeing approximately 375 k acres of land with a total value of $113 B. The Department of Energy has found that major impacts from climate change will threaten energy infrastructure in the northeast US moving into the future. Current spatial information related to the energy resources and infrastructure on and adjacent to DoD installations can play a vital role in decision-making for sustainable and resilient installation planning in the region. The Energy Atlas (EA) portal provides a secure value-added resource to inform the decision-making process for current and future investment in installation infrastructure, energy management, and improvements to energy resiliency and sustainability. The EA aggregates spatial data for energy, infrastructure, and related environmental resources and facilitates access to that information through a secure online portal. The EA is hosted on a Common Access Card–authenticated portal accessible to DoD decision-makers and their partners through the Intelligence Community Geographic Information System (GIS) portal. The expansion of data coverage within the EA portal helps the DoD account for energy in contingency planning, acquisition, and lifecycle requirements in the northeast US and ensures facilities can maintain operations in the face of disruption.
  • Marine Bioinvasion Risk: Review of Current Ecological Models

    Abstract: This special report describes the first phase of developing an ecological model to inform marine bioinvasion risks in the United States. The project responds to the needs of the US Army Corps of Engineers (USACE) Aquatic Nuisance Species Research Program, or ANSRP, which addresses all problematic invasive aquatic species affecting the nation’s waterways, infrastructure, and associated resources, and the needs of the USACE navigation and dredging programs. Multiple port-deepening studies are either in progress or under consideration, and all must address ecological risk. Understanding whether and how increased dredging contributes to in-creased marine bioinvasion risk allows risk mitigation during early planning phases. Considering the potential impacts of future environmental change, such as changing sea level, ocean temperature, and ocean chemistry, will further strengthen planning for marine bioinvasion risk. There-fore, this special report documents current ecological modeling approaches to marine bioinvasion risk models and identifies models that in-corporate shipping as a vector. The special report then presents a conceptual model and identifies historic vessel position data from the Automatic Identification System, or AIS, now available for most commercial and some recreational vessels around the United States, as a key source for future model development and testing.
  • Proceedings from the Basin Sediment Management for Unique Island Topography Workshop, Mayagüez, Puerto Rico

    Abstract: This report summarizes the Basin Sediment Management for Unique Island Topography Workshop hosted in-person and virtually at the University of Puerto Rico Mayagüez (UPRM) Department of Civil Engineering and Surveying, Mayagüez, Puerto Rico on 11 March 2022. The workshop was attended by approximately 80 federal, state, local, and academic organizations participants. It focused on Engineering With Nature® (EWN®), green infrastructure (GI) and low impact development (LID) opportunities for unique tropical island topography and included seven presentations from subject matter experts, a discussion on limitations and problems with prior projects, and two concurrent breakout sessions. Preworkshop activities included a field trip to multiple sites in the Añasco watershed conducted 09 March 2022, which served as a base case for the workshop. The field trip provided participants a unique perspective of the island’s topography and post 2017 Hurricane María issues and impacts. During the breakout sessions, participants identified new project opportunities for EWN®-GI and LID at two selected sites from the field trip. Each group developed alternatives for their chosen site and identified concepts that could turn into great opportunities for the surrounding communities and significantly benefit the state of practice in Puerto Rico’s unique tropical island topography.
  • USACE announces public comment on water management deviation from the Combined Operational Plan to lower water levels in WCA-3A

    The U.S. Army Corps of Engineers Jacksonville District announces the opening of public comment on the Environmental Assessment (EA) and proposed Finding of No Significant Impact (FONSI) for a planned, temporary deviation from the 2020 Combined Operational Plan (COP). The COP is a comprehensive, integrated Water Control Plan (WCP) for the southern portion of the Central & Southern Florida (C&SF) Project – including Water Conservation Area 3A (WCA-3A), Everglades National Park (ENP), and the South Dade Conveyance System (SDCS). Public engagement is encouraged, and comments are due Monday, November 6.