USACE News - Apr 2021 - Page 8 - Apr 2021

April

15 Apr 2021
First responders coordinate actions in Center Hill Dam tabletop exercise
LANCASTER, Tenn. (April 15, 2019) – First responders participated in an exercise at Center Hill Dam last week to coordinate actions that would be necessary if they had to respond to a scenario where the U.S. Army Corps of Engineers Nashville District could not operate the spillways during a high water event.
15 Apr 2021
Cherokee Park Reopens April 15
The U.S. Army Corps of Engineers, Little Rock District announces that beginning April 15, Cherokee Park near Morrilton, Arkansas will be available for reservations.
14 Apr 2021
Thron earns Meritorious Civilian Service Medal
Congratulations to Memphis District Biologist Mike Thron, who on yesterday, was presented with the Meritorious Civilian Service Medal, by Mississippi Valley Division Commanding General and Mississippi River Commission President Maj. Gen. Diana Holland, for his outstanding leadership as the National Environmental Policy Act (NEPA) coordinator on the Mississippi River Mainline Levees (MRL) Final Supplement II (Final SEIS II).
14 Apr 2021
Rescue revetment task order awarded
The Memphis District recently awarded a task order to restore existing revetment and repair over-steepened banks along the Mississippi River in Coahoma County, Mississippi, and Phillips County, Arkansas. A total of $1,344,000 was awarded on the current River Repairs IDIQ (Indefinite Delivery, Indefinite Quantity) Contract to Midwest Construction Company.

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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…

Happy New Year! As we welcome 2026, let’s make water safety a top priority. 🛟Always wear your life jacket and make sure its fits 🛟Learn how to swim 🛟Never drink and boat Practice water safety every time you are in, on, or near the water! #LifeJacketsWornNobodyMourns

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Archive: April, 2021

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22 Apr 2021
Comparison of Generic and Proprietary Aquatic Herbicides for Control of Invasive Vegetation : Part 2. Emergent Plants
Abstract: Aquatic herbicides are one of the most effective and widespread ways to manage nuisance vegetation in the US After the active ingredient is selected, often there are numerous proprietary and generic branded products to select from. To date, limited efforts have been made to compare the efficacy of brand name and generic herbicides head to head; therefore, at tot al of 20 mesocosm trials were conducted to evaluate various 2,4 -D, glyphosate, imazapyr, and triclopyr products against alligatorweed (Alternanthera philoxeroides (Mart.) Griseb.), southern cattail (hereafter referred to as cattail, Typha domingensis Pers.), and creeping water primrose (hereafter referred as primrose, Ludwigia peploides (Kunth) P.H. Raven). All active ingredients were applied to foliage at broadcast rates commonly used in applications to public waters. Proprietary and generic 2,4 -D, glyphosate, imazapyr, and triclopyr were efficacious and provided 39 to 99% control of alligatorweed, cattail and primrose in 19 of the 20 trials. There were no significant differences i n product performance except glyphosate vs. alligatorweed (trial 1, Rodeo vs. Roundup Custom) and glyphosate vs. cattail (trial 1, Rodeo vs. Glyphosate 5.4). These results demonstrate under small -scale conditions, the majority of the generic and proprietary herbicides provided similar control of emergent vegetation, regardless of active ingredient.
22 Apr 2021
Rapid Airfield Damage Recovery Next Generation Backfill Technologies Comparison Experiment : Technology Comparison Experiment
Abstract: The Rapid Airfield Damage Recovery (RADR) Next Generation Backfill Technology Comparison Experiment was conducted in July 2017 at the East Campus of the U.S. Army Engineer Research and Development Center (ERDC), located in Vicksburg, MS. The experiment evaluated three different crater backfill technologies to compare their performance and develop a technology trade-off analysis. The RADR next generation backfill technologies were compared to the current RADR standard backfill method of flowable fill. Results from this experiment provided useful information on technology rankings and trade-offs. This effort resulted in successful crater backfill solutions that were recommended for further end user evaluation.