Home / Media / News / NewsSearch

  • ERDC R&D underpins harmful algal bloom removal technology at Ohio demonstration

    VICKSBURG, Miss.– U.S. Army Engineer Research and Development Center (ERDC) researchers attended a demonstration of freshwater harmful algae removal technology at William H. Harsha Lake in Batavia, Ohio, September 15. The Ohio Department of Natural Resources H2Ohio Program hosted the event, with industry partners Woolpert, an architecture, engineering, geospatial and strategic consulting firm, and AECOM, an infrastructure and engineering company presenting the technology. The Harmful Algal Bloom Interception, Treatment, and Transformation System (HABITATS) underpins the harmful algal bloom (HAB) removal unit demonstrated at the lake, which is located just outside of Cincinnati.

  • Volunteers clean Stark Knob Boat Ramp during National Public Lands Day

    HENDERSONVILLE, Tenn. (Sept. 28, 2022) – Volunteers celebrated National Public Lands Day at Stark Knob Boat Ramp, on Old Hickory Lake, Saturday, Sept. 26th. The annual event brought together volunteers from the local community and Nashville District park rangers who helped restore, clean, and improve the recreation area.

  • Corps suspends operations at navigation locks

    With Hurricane Ian set to make landfall in Florida, the U.S. Army Corps of Engineers, Jacksonville District, is suspending its operations at the five lock and dam structures on the Okeechobee Waterway and at the Canaveral Lock.

  • USACE Kansas City District’s Meinert continues ERDC University Project

    Brandon Meinert, an advanced modeling manager with the U.S. Army Corps of Engineers (USACE) Kansas City District, was recognized Sept. 15 as a graduate of U.S. Army Engineer Research and Development Center’s (ERDC) six-month detail program, known as ERDC University (ERDC-U).

  • MKARNS Nav Notice SWL 22-53 Montgomery Point L&D - Closed to Navigation Traffic

    MKARNS - Montgomery Point Lock & Dam (NM 0.5) will be closed to traffic from 7 a.m. to 5 p.m. Wednesday, 28 Sep, for emergency repairs to the hydraulic system that controls the downstream miter gates.

  • Wave Attenuation of Coastal Mangroves at a Near-Prototype Scale

    Abstract: A physical model study investigating the dissipation of wave energy by a 1:2.1 scale North American red mangrove forest was performed in a large-scale flume. The objectives were to measure the amount of wave attenuation afforded by mangroves, identify key hydrodynamic parameters influencing wave attenuation, and provide methodologies for application. Seventy-two hydrodynamic conditions, comprising irregular and regular waves, were tested. The analysis related the dissipation to three formulations that can provide estimates of wave attenuation for flood risk management projects considering mangroves: damping coefficient β, drag coefficient CD, and Manning’s roughness coefficient n. The attenuation of the incident wave height through the 15.12 m long, 1:2.1 scale mangrove forest was exponential in form and varied from 13%–77%. Water depth and incident wave height strongly influenced the amount of wave attenuation. Accounting for differences in water depth using the sub-merged volume fraction resulted in a common fit of the damping coefficient as a function of relative wave height and wave steepness. The drag coefficient demonstrated a stronger relationship with the Keulegan–Carpenter number than the Reynolds number. The linear relationship be-tween relative depth and Manning’s n was stronger than that between Manning’s n and either relative wave height or wave steep

  • Analytic Methods for Establishing Restoration Trajectories

    Abstract: This special report identifies metrics (standard and novel) and analytic approaches to developing trajectories and then describes the conceptual process of using those metrics and approaches to develop restoration trajectories to inform adaptive management in salt-marsh systems. We identify the composite time series trajectory (CTST) approach, in which metrics are measured from restoration sites of different ages within a small spatial range, and the retrospective single-site trajectory (RSST) approach, in which the same restoration metrics are measured over time at one restoration site. In all, we assessed the metrics of 39 studies of salt-marsh restoration in the United States between 1991 and 2019.

  • New Guardrail Systems on Mark Twain Lake Boat Ramps

    September 27, 2022, Mark Twain Lake – The U.S. Army Corps of Engineers at Mark Twain Lake is announcing the temporary closure of four boat ramps to improve visitor safety. The South Fork, Indian Creek West, Stoutsville, and John F. Spalding Boat Ramps will be receiving new guardrail systems. The closures are necessary to facilitate removal of the old guardrail and installation of the new guardrail. The temporary closures are as follows:

  • A $400,000 signature: Corps signs PAS agreement with Indiana County, Pennsylvania

    With a pen stroke, Pittsburgh District Commander Adam Czekanski set the gears in motion for a $426,000 project in Indiana County, Pennsylvania.

  • North Bend Park at John H Kerr scheduled for closure

    North Bend Park at John H Kerr Dam and Reservoir (Buggs Island), 64 N. Bend Drive, will be closed