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  • Mobile District Receives Hiring Freeze Exceptions for Park Rangers

    The U.S. Army Corps of Engineers (USACE) Mobile District has received 16 hiring freeze exemptions to bring on additional Park Rangers to support public recreation sites across the region.

  • MKARNS Nav Notice No. SWL 25-43 Lock 1 Navigation Pass Open (Through Lock)

    The tailwater elevation at Norrell Lock (No. 1) NM 10.3 has exceeded 143.0 feet. All vessels will be directed to transit through the lock chamber with pinned open gates while the tailwater elevation remains above 143.0 feet.

  • U.S. Army Corps of Engineers to reopen Tompkins Campground June 30; extends 2025 recreation season

    Tompkins Campground at the Tioga-Hammond and Cowanesque Lakes project in Tioga County, Pennsylvania, will reopen on Monday, June 30 and will remain open until Tuesday, October 14, extending its normal recreation season closure by nearly six weeks.

  • U.S. Army Corps of Engineers to Host Ribbon Cutting Ceremony for Upper Wood River Levee Project

    The U.S. Army Corps of Engineers, St. Louis District, in partnership with the Wood River Drainage and Levee District, will host a ribbon cutting ceremony to mark the completion of the Upper Wood River Levee Underseepage Design Deficiency Correction Project on June 20, at 9:30 a.m. at the East Alton No. 1 Pump Station in Alton, Ill. The event will recognize the successful federal-local partnership and celebrate a major milestone in flood risk management for the region. The project enhances the safety and reliability of the levee system by addressing a known design deficiency and implementing features that control underseepage from the Mississippi River. Improvements include 80 new relief wells, a drainage collection system, and an access road.

  • JEFFERSON PARISH DEPARTMENT OF CAPITOL PROJECTS - DICKORY AVENUE EXTENSION (2025-0105)

    The proposed action consists of constructing a new four lane roadway and drainage features to extend the existing Dickory Avenue roadway to Jefferson Highway (Hwy 48). The Requester states that the proposed project is necessary to improve Jefferson Parish’s transportation network to allow more efficient travel for motorists and to promote economic development.

  • Proposed Plan Available and Public Meeting: Former Lake Ontario Ordnance Works

    The U.S. Army Corps of Engineers (USACE), Buffalo District has released the proposed plan for the

  • Chemo-Electrochemical Evolution of Cathode–Solid Electrolyte Interface in All-Solid-State Batteries

    Abstract: The stability of the interface between the cathode and the solid electrolyte (SE) has been found to be a key determinant of solid-state battery (SSB) performance. While interfacial failure from electro-chemical cycling has been studied, temperature effects on the chemical and electrochemical evolution of interface properties are not well-understood. We utilize a dense additive-free LiCoO2 cathode, which provides controlled morphology and crystallography, and well-known high voltage halide SEs (Li₃InCl₆ and Li₃YCl₆) to eliminate the need for cathode coating to explore the nature of interface deterioration induced by operating at up to 100 °C. By promoting temperature-induced accelerated interfacial failure, we show that at elevated temperatures (>60 °C) and higher states of charge, a significant chemo-electrochemical contribution to interfacial resistance results in rapid cell performance degradation. Our findings show that beyond the well sought-after SE electrochemical voltage stability, the atomic-scale restructuring of the cathode surface interfaced with the SE must be considered when designing stable interfaces.

  • A Bellwether for Microplastic in Wetland Catchments in the Great Lakes Region

    Abstract: This study is intended as a bellwether for the occurrence of microplastics (MPs) in Great Lakes wetlands. In 2020, sediment, surface water, and atmospheric deposition samples were collected from wetland catchments in or near five National Wildlife Refuges (NWRs) in the Great Lakes region: Horicon-WI, Seney-MI, Shiawassee-MI, Ottawa- OH, and Montezuma-NY. Sediment and surface water samples were taken from river, stream, and canal inflows and outflows to and from wetland areas. Atmospheric deposition samples were collected in carboys placed near established rain gauges. These sample sites were chosen as indicators of MP deposition into and out of the region’s wetland systems. MPs were extracted from each sample, enumerated, and categorized by particle morphology and polymer type. Average MP particle abundances in the sediment and surface water samples ranged from 344 to 538 particles kg⁻¹ (dry weight) and 2–68 particles m⁻³, respectively. Atmospheric MP deposition ranged from 5.8 to 22.6 particles m⁻² d⁻¹. Fibers were the most abundant MP particle type found in each sample type (sediment, surface water, and atmospheric deposition), followed by fragments. These results suggest that input and retention of MPs are pervasive in the Great Lakes region and surrounding wetland areas.

  • Prediction of Waterborne Freight Activity with Automatic Identification System Using Machine Learning

    Abstract: This paper addresses latency issues related to publicly available port-level commodity tonnage reports. Predicting commodity tonnage at the port-level, near real time vessel tracking data is used with historical WCS with a machine learning model. Commodity throughput is derived from WCS data which is released publicly approximately two years after collection. This latency presents a challenge for short-term planning and other operational uses. This study leverages near real time vessel tracking data from the AIS data set. LSTM, TCN, and TFT machine learning models are developed using the features extracted from AIS and the historical WCS data. The output of the model is the prediction of the quarterly volume of commodities at port terminals for four quarters in the future. Uncategorized and Categorized models were developed. The uncategorized outperformed the categorized based on the Mean Absolute Percentage Error. The uncategorized LSTM model has the highest accuracy. Results show the model has higher accuracy for port terminals that handle a specific type of vessel, compared to the port terminals handling more than one vessel type. The application of the model enables port authorities and stakeholders to make short-term capacity expansion and infrastructure investment decisions based on commodity volume.

  • Liz Suarez earns prestigious award for disaster recovery efforts

    Internal Review Office Chief, Liz Suarez, of the U.S. Army Corps of Engineers, Savannah District, was recently selected as the George A. Sullivan Award recipient due to her efforts during hurricane disaster recovery operations, where she ensured improvements for the Blue Roof missions were implemented and for her fieldwork to improve operations during debris missions.