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  • Water managers monitor upper-elevation rain that could cause local flooding

    Pacific Northwest weather can be a conundrum. In 2026, many parts of the region struggled to build snowpack and saw minimal precipitation. However, even average snowpack combined with storm events can lead to elevated stream flows, as the Flathead Basin in western Montana saw this week.

  • High-Level Army Engineer Visits Horry County to Assess Waccamaw River Flood Risk Study Progress

    Senior leadership from the U.S. Army Corps of Engineers (USACE), visit Horry County on May 15 to review key areas of the ongoing Waccamaw River Flood Risk Management Study as it nears completion. Maj. Gen. Jason E. Kelly, Deputy Commanding General for Civil and Emergency Operations, and Lt. Col. Todd Mainwaring, Charleston District commander, met with Horry County officials, who are the non-federal cost-share partners, to review areas where infrastructure currently restricts natural water flow—one of the primary drivers of flooding impacts the study identifies.

  • Dworshak Dam closes some recreation areas for public safety

    AHSAHKA, Idaho – The U.S. Army Corps of Engineers has temporarily closed several recreation areas at Dworshak Dam and Reservoir due to flooding and mudslides.

  • Army engineers complete review, move pump station plan forward

    Army engineers complete a required environmental review for upgrading a pump station in Charleston that will help reduce flooding in the Medical District. Last week, the U.S. Army Corps of Engineers (USACE) determined the project would not have significant environmental impacts, clearing an important milestone so the City of Charleston and USACE can continue advancing the pump station rehabilitation.

  • The human switchboard: how USACE liaisons manage information during flood fight events

    Two weeks of relentless atmospheric rivers inundated western Washington in December 2025. Rivers swelled to historic levels, threatened homes, industrial areas and stressed communities in floodplains. When the U.S. Army Corps of Engineers (USACE) Seattle District, ramped up its emergency operations, a small, specialized group of individuals stepped into one of the most critical and least understood roles in disaster response: the liaison.

  • Army Corps, local leaders outline Midland flood resiliency efforts

  • Army Corps gives update on Midland County flood study

  • A Calibration Method for Projecting Future Extremes via a Linear Mapping of Parameters

    Abstract: In order to study potential impacts arising from climate change, future projections of numerical model output often must be calibrated to be comparable to observations. Rather than calibrating the data values themselves, we propose a novel statistical calibration method for extremes that assumes there exists a linear relationship between parameters associated with model output and parameters associated with observations. This approach allows us to capture uncertainty in both parameter estimates and the linear calibration, which we achieve via bootstrap. To focus on extreme behavior, we assume both model output and observations have distributions composed of a mixture model combining a Weibull distribution with a generalized Pareto distribution for the tail. A simulation study shows good coverage rates. We apply the method to project future daily-averaged river runoff at the Purgatoire River in southeastern Colorado.

  • ‘Like a detective looking for evidence in a crime scene’: How collecting high-water marks helps flood risk reduction efforts

    If a tree falls in a forest and no one is there to see it, does it make a sound? Similarly, if a heavy rain event causes flooding overnight and no one is awake to see it, did it happen? Of course it did. But, how do you know how high the water got if no one was there to witness it? This was the scenario facing the City of Merriam, Kansas, after a significant rainfall event occurred overnight and into the early morning of July 17, 2025. Turkey Creek, which runs through the city, is prone to flash flooding during heavy rain events. On July 17, the creek flooded, impacting parts of the city, but it all occurred overnight when most people were asleep. The flood waters receded almost as quickly as they rose, posing the question: how high did the water get?

  • USACE staff work around the clock to reopen recreation areas after historic flooding

    When floodwaters finally receded throughout Kentucky’s Green River Basin, they left behind more than mud and debris –they left a monumental cleanup challenge for the crews that manage U.S. Army Corps of Engineers Louisville District flood risk management (FRM) projects in the area. Following record rainfall in early 2025, project staff at the district’s lakes have worked tirelessly repairing, cleaning and reopening facilities so visitors could enjoy as much of the 2025 recreation season as possible. Several reservoirs reached historic highs: Rough River Lake crested at a record 530.4 feet MSL (mean sea level), Barren River Lake at 586 feet MSL, Nolin River Lake reached its second-highest pool at 556.28 feet, and Green River Lake rose into its top five historic pools on record.