USACE News - Page 159

May

22 May 2020
Virtual PDT reaches Contract Award milestone ahead of schedule
When the COVID-19 pandemic required the Memphis District to mass telework, our Project Delivery Teams (PDT) suddenly became virtual teams. With the sudden pivot to virtual teamwork, you might expect a lag in PDT performance. However, despite their lack of experience as a virtual team, the Mellwood Seepage Remediation PDT quickly adjusted to remote teamwork and reached their Contract Award milestone, on May 19, ahead of schedule.
22 May 2020
Fisk Scour Repair Project is Ready-to-Advertise
Reaching a project milestone is the result of successive interim achievements along the way. Successive interim achievements have propelled the Fisk Scour Repair Project Delivery Team (PDT) to successfully reach its important Ready-to-Advertise milestone on May 15.
21 May 2020
ERDC researchers model COVID-19 for the Nation
VICKSBURG, Miss. – When the U.S. Army Engineer Research and Development Center’s Dr. Brandon Lafferty sleeps these days, he dreams about predictive models. That’s because since mid-March, Lafferty, a researcher from the ERDC Environmental Laboratory, has been helping lead ERDC’s Modelling and Simulation Team develop the ERDC Susceptible Exposed Infected Recovered ⸺ or SEIR ⸺ model for COVID-19, and it’s an intense effort.
21 May 2020
Tulsa District Natural Resource Specialist Knight selected for ERDC University
VICKSBURG, Miss. — After learning that the U.S. Army Corps of Engineers (USACE) manages outdoor recreation at more than 400 lake and river projects in 43 states, a career as a USACE outdoor recreation planner appealed to Mississippi native Jason Knight. Now with the USACE Tulsa District, the natural resource specialist is a participant in the 2020 Engineer Research and Development Center University (ERDC U).

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RT @USACE_ABQ: 🧊Even on clear ice that’s at least 4 inches thick, you should always wear a #lifejacket and carry ice rescue picks or claws.…

RT @ArmyERDC: Tune in this morning to Beyond the Gates to hear Brent Towne, research civil engineer with the Geotechnical & Structures Lab,…

Every year, our Seattle District clears tons of debris from the Puget Sound and its tributaries. But what happens to that material after they’ve been salvaged? Learn more: https://t.co/4YSlQgM4VS

RT @USACERockIsland: When U.S. Army engineers are called to deploy for critical infrastructure support overseas, a Forward Engineer Support…

Moments ago, during his state of the state address, WA Gov. Bob Ferguson discussed recent atmospheric rivers in the region and USACE contributions to the response. We were honored to stand with our partners in supporting the life, health and safety of all those affected. https://t.co/8jjslN6BlN

RT @USACESacramento: Along the Yuba River, you may encounter Daguerre Point Dam, a low-head dam. Low-head dams may be dangerous for waterwa…

RT @USArmy: 2026 Big Army updates are coming. Tune in to our YouTube channel tomorrow at noon EST to watch our special Army event. https:…

RT @ArmyERDC: ERDC is supporting the innovative use of Pacific Northwest timber in the construction of barracks at @JBLM_PAO. By leveraging…

The Jan. 7 Los Angeles County wildfires debris removal operation was one of our largest, most challenging missions. More than 1,400 USACE personnel deployed from across the nation and from our district to support debris removal operations. /6

But we did not do this alone. The success of this important mission was the result of strong partnerships with FEMA, Cal OES, LA County, local governments and impacted communities. /5

To date, USACE has removed more than 2.6 million tons of debris — the equivalent of more than 218,000 truckloads. /4

We are proud of our efforts, alongside our partners, to rapidly come to the aid of our fellow citizens in their time of need. In just six months, more than 9,500 properties were cleared — making this the fastest, large-scale wildfire debris removal in USACE history. /3

After the devastating Los Angeles wildfires in January 2025, the U.S. Army Corps of Engineers was laser-focused on removing immediate hazards to public health and safety, and supporting economic recovery by removing structural ash, debris and foundations. /2

This week marks one year since the January 2025 Southern California wildfires began. On Jan. 17, the U.S. Army Corps of Engineers began its debris removal mission, which was a critical step in the road to recovery. https://t.co/iF1yZ5D6CP

The U.S. Army Corps of Engineers announced today the publication of the 2026 nationwide permits in the Federal Register. Learn more: https://t.co/3IzyxdqV3P

USACE will reissue 56 existing nationwide permits & issue one new permit for work in wetlands & other waters that are regulated by Section 404 of Clean Water Act and/or Section 10 of Rivers & Harbors Act of 1899. One existing permit will not be reissued: https://t.co/NhihR0uoAM

RT @USACE_Buffalo: 🛥️ Dredging keeps our waterways safe & sustainable! 🌱 Learn how the U.S. Army Corps of Engineers repurposes clean sedim…

RT @ArmyERDC: ERDC is providing innovative support to @USACENOLA civil works mission by inspecting the dewatered bays for voids in the Old…

RT @USArmy: 📆 Soldiers, mark your calendars for the Senior Leader SITREP, premiering on our YouTube channel, Jan. 13 at 12:00 p.m. https://…

RT @StPaulUSACE: Happy New Year! As we welcome 2026, let’s make water safety a top priority. Let’s make 2026 the safest year yet by practic…

46,742

News Releases

31 Jul 2020
Public invited to comment on planned autumn releases from Rathbun Lake
In 2016 in response to stakeholder input, the Corps of Engineers revised its operating guidance for Rathbun Lake. The new guidance allows for an annual opportunity, every autumn, for the lake to schedule a release of water to benefit state and privately managed conservation and recreational areas downstream in the Chariton watershed. This release of water will not exceed 2,700 cubic feet per second from Rathbun Dam and would be sustained for no longer than 3 or 4 days, excluding ramp up and ramp down.
31 Jul 2020
Virtual public meetings set for Collier County study
The U.S. Army Corps of Engineers and Collier County, Florida, its nonfederal sponsor, have released the Collier County Coastal Storm Risk Management Draft Integrated Feasibility Report and Environmental Impact Statement.
30 Jul 2020
PUBLICATION NOTICE: Erosion Thresholds and Rates for Sand-Mud Mixtures
Abstract: Differences in erosion behavior of non-cohesive and cohesive sediments are widely recognized. In many natural environments, sand and mud are not completely separated and occur as mixtures. Significantly less research has been conducted on the erosion behavior of sand-mud mixtures compared to the separate treatment of sand and mud erosion. Sedflume erosion experiments were conducted on sand-mud mixtures with varying mud content to define the relationships between mud content, critical stress for erosion (τc), and erosion rate. Sand-mud mixtures were prepared with three mud sources: (1) non-swelling clay (kaolinite), (2) swelling clay (kaolinite/bentonite), and (3) a swelling, natural mud from the Mississippi River. Test results showed that critical shear stresses of the mixed sediments departed from that of pure sand with mud fractions on the order of 2% to 10%. Peak τc was observed between 30% to 40% mud content, with swelling muds achieving a ten-fold increase in τc while a five-fold increase in τc was measured for kaolinite. Additionally, this study demonstrated that the introduction of small amounts (≤5%) of mud to sand reduced erosion rates by a factor of 10 to 100. This observed abatement of erosion rate has implications for the use of dredged materials in civil and environmental engineering projects.
30 Jul 2020
PUBLICATION NOTICE: Investigation of Shoaling in the Federal Navigation Channel, Waukegan Harbor, Illinois
Abstract: Persistent and excessive shoaling occurs in the Outer Harbor and Approach Channel of the Waukegan Harbor, Illinois. This report describes a numerical modeling study performed for the US Army Corps of Engineers, Chicago District, to evaluate the existing harbor and 11 structural alternatives for three crest elevations. This report provides details of numerical modeling study, analysis of field data, and estimates of shoaling. The focus of the study is the investigation of a variety of structural solutions intercepting and/or diverting sediments to reduce shoaling in the navigation channel. These include breakwaters, groins, spurs, and structural extensions with varying length and crest elevation connecting to the north beach and existing north breakwater. Estimates of both shoaling volume and height are developed with and without project using an integrated wave-flow-sediment transport numerical modeling approach. Quantitative reduction estimates are provided for each structural alternative investigated.