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  • Virtual public updates scheduled for Mississippi River study

    The U.S. Army Corps of Engineers, New Orleans District has scheduled a virtual public update meeting for the Lower Mississippi River Comprehensive Management Study (LMR Comp) on Thursday, Oct. 3, 2024, at 2 p.m.

  • MKARNS Nav Notice No. SWL 24-71 MPLD NavPass Closed

    The sediment flushing operation at Montgomery Point Lock and Dam (NM 0.5) has ended.

  • USACE to construct underwater sill to arrest saltwater progression into Mississippi River

    The operational trigger has been met for the U.S. Army Corps of Engineers to construct an underwater sill across the bed of the Mississippi River channel to arrest further upriver progression of salt water from the Gulf of Mexico.

  • Decades in the making: Pittsburgh District celebrates completion of newest lock chamber on Monongahela River

    With the snip of scissors and the blow of a towboat’s horn, the U.S. Army Corps of Engineers Pittsburgh District celebrated the opening and renaming of the most modern lock on the Monongahela River after two decades of construction near Charleroi, Pennsylvania, Aug. 28.

  • USACE, 355th partners break ground on new security entrance at Davis-Monthan Air Force Base

    Senior leaders with the U.S. Army Corps of Engineers and Davis-Monthan Air Force Base broke ground on the new South Wilmot Gate project during an Aug. 23 ceremony at the air base near Tucson, Arizona.

  • Partners and stakeholders join Kansas City District on annual Missouri River barge inspection

    A barge inspection of the Lower Missouri River Basin was held on Aug. 28, 2024, in Kansas City, Missouri. The annual event was hosted by the Kansas City District, U.S. Army Corps of Engineers. The barge inspection is an opportunity for Missouri River partners and stakeholders to view various Kansas City District Civil Works projects on a segment of the river. Subject matter experts from the district were present to discuss the Missouri River Recovery Program, Operations and Maintenance for Navigation, the Lower Missouri River Basin studies and the Kansas Citys Levees Civil Works project. Guest speakers included the Missouri Department of Transportation and Water One.

  • Integrating NOAA’s National Water Model (NWM) into the Antecedent Precipitation Tool (APT) to Support Clean Water Act Decision-Making

    Abstract: This study examines the effectiveness of the National Water Model (NWM) in assessing streamflow normalcy under the Clean Water Act, compared to the commonly used Antecedent Precipitation Tool (APT). The APT, used by the Environmental Protection Agency, US Army Corps of Engineers, and environmental consultants, evaluates waterbody conditions based on precipitation data. However, it was found to be less accurate in predicting streamflow normalcy compared to USGS gage data. The NWM, on the other hand, showed promising results in preliminary analyses, outperforming the APT when compared to USGS gage records. This research expands on these initial findings, evaluating the NWM’s performance across the contiguous United States (CONUS) at gage locations indexed to the NHDPlus Version 2.1 stream network. The results suggest that the NWM provides adequate performance for assessing streamflow normalcy where USGS gages are not present, with accuracy ranging from 40% to 60% in the western half of CONUS and 60% to 80% in the eastern half.

  • Validation of Daily Snow Water Equivalent for a Watershed Statistics Tool

    Abstract: The Watershed Statistics tool is a tool currently being developed for the Remote Sensing and Geographic Information Systems Center of Expertise’s (RSGIS) Extreme Cold Weather web portal and will allow users to easily access and visualize snow water equivalent (SWE) data. The SWE data available on this tool are derived from passive microwave signals acquired by satellite through a technique known as enhanced passive microwave SWE. This analysis used available in situ SWE measurements from snow study sites in four watersheds across the United States and Canada to determine the accuracy of the data available on the tool at the watershed scale. In situ measurements of SWE were compared with the Watershed Statistics tool’s SWE data based on watershed, land cover, and elevation to determine causes if discrepancies between the satellite-based estimations on the tool and ground-based measurements. The extent to which the data available on the Watershed Statistics tool agreed with in situ measurements was highly variable. SWE data available on the Watershed Statistics tool agreed the least with ground-based measurements made at higher elevations and in areas with denser vegetation. The findings of this comparison are consistent with known limitations of the enhanced passive microwave SWE technique.

  • Temporary A1A closures, detours set for early Friday morning in Flagler Beach

    The USACE Jacksonville District Flagler County Coastal Storm Risk Management project in Flagler Beach will temporarily close and re-route traffic along and adjacent to SRS A1A beginning Friday, Aug. 30, at 6 a.m. to relocate heavy equipment from north to south of Flagler Beach Pier. Closures and detours are projected to be restored within 2-4 hours.

  • Generations on the Water

    Born in Cecil County, Baltimore District’s Jacob Tuer was destined for a life on the water. His neighborhood had a slip for the family boat, and he spent countless hours on jon boats cruising the Elk River with his father, Jeff, who operated survey vessels for the Baltimore District from 2014 to 2018. But when a container ship struck the Key Bridge, leading to its collapse and blocking a vital shipping channel, another member of this family of Maryland watermen, Jacob’s brother Matthew, found his path converging with his brother’s in an unexpected way.