• USACE commemorates completion of Three Rivers Project with ribbon cutting

    The U.S. Army Corps of Engineers Little Rock District commemorated the completion of the Three Rivers Project during a ribbon cutting ceremony Aug. 12, 2026, celebrating a nationally significant infrastructure project that protects the long-term reliability of the McClellan-Kerr Arkansas River Navigation System.
  • U.S. Army Corps of Engineers Recognizes National Hydropower Day and Highlights Public-Private Energy Partnerships

    The U.S. Army Corps of Engineers (USACE) is proud to recognize National Hydropower Day, Aug. 24. For more than 140 years, the USACE Hydropower Program has been providing the nation with ready, reliable, and resilient energy. USACE is the largest owner and operator of hydroelectric power plants in the United States, generating more than 25% of the nation’s hydropower and ranking among the nation’s top 10 power producers overall.
  • Make core memories at the Corps of Engineers Lock and Dam 7 open house

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, will host a public open house at Lock and Dam 7 in La Crescent, Minnesota, Sept. 19. Held in conjunction with La Crescent’s annual Applefest, the event offers the public a rare, behind-the-scenes look at how the Corps maintains the Mississippi River navigation channel — which allows a single commercial barge to transport the equivalent of 7.5 million apples.
  • Army Corps’ Albany Field Office Receives OSHA’s Highest Rating For Safety

    The U.S. Army Corps of Engineers’ Albany Field Office has earned the Occupational Safety and Health Administration’s (OSHA) prestigious Voluntary Protection Program (VPP) Star Award ⎼ OSHA’s highest honor for exemplary achievement in workplace health and safety.
  • Mock-up building for Rhine Ordnance Barracks Medical Center scheduled for demolition

    At the end of August, the façade mock-up building for the hospital, a skinny, two-story building located near the entry gate, will be torn down. This demolition is part of the ongoing construction process for the hospital.
  • USACE Chicago District announces minimum water releases at JE Roush, Salamonie, and Mississinewa Lakes

    The U.S. Army Corps of Engineers (USACE), Chicago District, is adjusting operations at JE Roush, Salamonie, and Mississinewa Lakes due to recent heavy rainfall during the preceding week. As reported by the Ohio River Forecasting Center, between 3 and 10 inches fell across the Upper Wabash, with larger amounts having fallen along the most downstream limits of the basin. Up to an additional inch of rainfall is anticipated over the weekend, with the potential for localized areas of heavier rainfall. Based on current forecasts, the water level of the Wabash River, as measured at the USGS streamgage located at Lafayette, is forecasted to crest just below moderate flood stage the afternoon of 16 August 2026.
  • USACE Welcomes 16th Command Sergeant Major

    The U.S. Army Corps of Engineers conducted a Change of Responsibility ceremony between outgoing Command Sgt. Maj. Douglas W. Galick, the 15th USACE command sergeant major, and incoming Command Sgt. Maj. Shade Munday at Fort Belvoir, Virginia, Aug. 15.
  • Travel Times on Inland Waterways: Historic Statistical Calculations Between Selected Locks and River Confluences Using Automatic Identification System (AIS) Data from Calendar Year 2021

    Abstract: In the context of multimodal-freight modeling efforts, the US Army Corps of Engineers (USACE), Engineer Research and Development Center (ERDC), Coastal and Hydraulics Laboratory (CHL), entered into an inter-agency agreement with the Department of Transportation (USDOT), Bureau of Transportation Statistics (BTS), to produce travel-time statistics for select portions of the US inland waterway transportation system. Statistics include the median, interquartile range average, and 10th–90th percentile averages between origin and destination (OD) sets selected based on vessel traffic activity, especially lock and dam locations, which are natural stopping points. Travel-time statistics are derived from position reports broadcast via Automatic Identification System (AIS) transceivers for vessel transits that occurred in 2021. This technical report summarizes the methodology and findings.
  • A Local Meteoric Water Line for Interior Alaska Constrains Paleoclimate from 40 000 Year Old Relict Permafrost

    Abstract: Anthropogenic climate warming is degrading permafrost across interior Alaska. Information from past warming events provides long-term perspectives for future trajectories; however, late Quaternary seasonal temperatures are poorly constrained. We have established a stable water isotope meteoric water line for interior Alaska and measured stable water isotope values from 126 permafrost cores representing different ice types deposited over the past ∼40 ka (thousand years before 1950 CE). Samples represent two late Quaternary warm periods: marine isotope stage three (MIS3; 57–29 ka) and the Holocene (11.7 ka-present). Older samples provide insight into local climatic conditions slightly before the first archeological evidence for Paleolithic hunter-gatherers in the region. From permafrost ice we calculate that summer temperatures warmed by ∼10 ◦C between late MIS3 and today, with six degrees of warming between 40–30 ka and 3 ka and an additional 4 ◦C of warming since 3 ka. Half this recent 4 ◦C warming has occurred over the past 70 years.
  • A linguistic analysis of energy terminology in the wastewater literature

    Abstract: Recent wastewater treatment research has focused on technologies that can recover resources such as energy from the influent waste stream. Many unrelated studies have introduced or used energy-related terms to describe changes to wastewater treatment plant energy balances based on these technological innovations. Unfortunately, these wastewater energy-related terms are not well defined in the literature, with many used interchangeably and/or inconsistently. To address this shortcoming, this study (1) identified and defined the most prominent energy-related terms in academic literature, (2) proposed a classification schema, and (3) explored trends in term usage over time. Energy-related terms identified from the literature were defined and classified based on the term’s functional role in the context of wastewater treatment plant energy use. Specifically, each term was classified as a wastewater treatment plant’s long-term energy ‘state’, a descriptive short-term energy ‘condition’ at the plant, or an energy ‘mechanism’ that drives a plant from one state to another. The trend analysis concluded that the development of energy-related wastewater literature has generally outpaced the baseline rate of academic publishing in all fields. The results of this study can ensure clear communication between actors in the wastewater treatment sector by standardizing definitions for energy-related terms.