• USACE project ensures Fort Campbell readiness

    The U.S. Army Corps of Engineers Louisville District is completing construction of a new microgrid at Fort Campbell, strengthening the installation’s ability to operate independently in the event of a commercial power outage.
  • Assessing Heat Pump Technologies in Cold Regions for Army Installations

    Abstract: Air-source heat pumps (ASHPs) can efficiently provide building heating and cooling. To assess the performance of ASHPs in cold regions for the Army Installation Technology Transition Program, we installed an air-to-air minisplit ASHP in Fairbanks, Alaska. This Interior Alaska location is exposed to extreme cold. The appropriate size of the unit was determined using building size and air temperatures from the location. Using monitoring equipment, the heating performance of the unit was analyzed using measurements collected over the winter months. Finally, the coefficient of performance (COP) was calculated, and a thermal camera was used to assess the heating performance qualitatively. The ASHP effectively heated the building during the project, and ASHPs are therefore recommended for use in cold regions.
  • Simulating Environmental Conditions for a Severe Dust Storm in Southwest Asia Using the Weather Research and Forecasting Model: A Model Configuration Sensitivity Study

    Abstract: Dust aerosols create hazardous air quality conditions that affect human health, visibility, and military operations. Numerical weather prediction models are important tools for predicting atmospheric dust by simulating dust emission, transport, and chemical evolution. We assessed the Weather Research and Forecasting (WRF) model’s ability to simulate the atmospheric conditions that drove a major dust event in Southwest Asia during July–August 2018. We evaluated five WRF configurations against satellite observations and Reanalysis Version 5 (ERA5) reanalysis data, focusing on the event’s synoptic evolution, storm progression, vertical structure, and surface wind fields. Results revealed substantial differences between configurations using Noah and Noah Multiparameterization (Noah-MP) land surface models (LSMs), with Noah providing a superior representation of meteorological conditions despite theoretical expectations of similar performance in arid environments. The best-performing configuration (Noah LSM, Mellor–Yamada–Nakanishi–Niino planetary boundary layer scheme, and spectral nudging) of the five considered accurately simulated the progression of a low-level jet streak and the associated surface winds responsible for dust mobilization throughout the event. This study supports the US Army Engineer Research and Development Center’s efforts to improve dust forecasting and establishes a foundation for evaluating dust emission parameterizations by isolating meteorological forcing errors from dust model physics.
  • Coos Bay North Jetty repairs complete after three years

    The Portland District, U.S. Army Corps of Engineers (USACE), has completed repairs to the Coos Bay North Jetty, which will be commemorated with a ribbon-cutting ceremony Thursday.
  • Reservoir drawdowns coming to Willamette Valley this fall, Detroit drawdown planned for 2026

    This fall and winter, residents living near Cougar, Green Peter, Lookout Point, and Fall Creek reservoirs should expect lower water levels as part of an effort by the U.S. Army Corps of Engineers (USACE) to support the recovery of endangered fish.
  • Grenada Lake Accepting Application for Special Veteran’s Deer Hunt

    VICKSBURG, Miss – The U.S. Army Corps of Engineers (USACE) Vicksburg District announces that Grenada Lake is preparing to host its 2025 Veterans Deer Hunt. There is a change to the format of the hunt this year. There will be a doe-only hunt held below the Grenada Lake Dam on December 12-14, 2025. All participants who harvest at least 3 does during the first hunt will be placed in a draw for an opportunity to hunt one of our two refuges on December 26-28, 2025. During the second draw hunt, a buck may be harvested.
  • Nashville District Emergency Management team supports Nation through FEMA missions

    The U.S. Army Corps of Engineers Nashville District’s Emergency Management team plays a critical role in disaster response and recovery, partnering with federal and state agencies to support affected communities. With a four-member team, they respond swiftly to crises, guiding operations through five key phases, from initial assessments to recovery missions. Over the past five years, they've been instrumental in nationwide efforts, including hurricane recovery, wildfire operations, and COVID-19 response. Their ongoing training and preparedness ensure they remain mission-ready to tackle emergencies at local, national, and global levels.
  • USACE breaks ground on Joint Integrated Test and Training Center at Joint Base Elmendorf-Richardson

    Col. Jeffrey Palazzini, district commander, joined Lt. Gen. Case Cunningham, commander of Alaska NORAD Region, Alaskan Command and Eleventh Air Force, and other distinguished guests to celebrate the groundbreaking for the Joint Integrated Test and Training Center at Joint Base Elmendorf-Richardson on Sep. 22. The center will be the first of its kind, enabling important joint and multinational force training.
  • U.S. Army Corps of Engineers, Jacksonville District celebrates completion of Everglades Agricultural Area Contract 10A

    The U.S. Army Corps of Engineers (USACE), Jacksonville District, along with federal, state, and local partners celebrated the completion of Contract 10A for the Everglades Agricultural Area (EAA) Reservoir Project, a critical milestone in the Central Everglades Planning Project (CEPP). This moment highlights years of dedicated partnership and progress toward restoring one of the world’s most unique ecosystems.
  • Physical Model Evaluation of the Yazoo Backwater Pumping Plant: Pump Intake Model Study

    Abstract: The Yazoo Backwater Area, located in west Central Mississippi, has historically experienced major flood events caused by high floodwaters from the Mississippi River and interior rainfall accumulation. To manage this, the US Army Corps of Engineers, Vicksburg District (MVK) proposed the construction of a 12-pump, 14,000-cfs-capacity pump station. The pump intake performance of the proposed pump station was evaluated using a scaled physical hydraulic model. The 1:17.62-scale model incorporated the hydraulically relevant components of the design including the inlet channel, all 12 intake bays with formed suction intakes and pump columns, abutments, and surrounding topography. Various pump-operating conditions and intake water-surface elevations were evaluated for acceptable pump performance. Approach-flow conditions were generally symmetrical with minor contraction at the intake divider walls. The outer pump bays produced a less uniform flow distribution. Surface vortices were found to be unacceptable for several pump-operating conditions at the minimum-intake water elevation (EL) and pump-on water-surface elevation. Tests indicated that vortex suppressor beams would be required in the pump bays to reduce the severity and frequency of surface vortices. With the beams installed, the pump intakes provided satisfactory hydraulic performance for the approach-flow conditions.