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  • Corrosion and Performance of Dust Palliatives: Laboratory and Field Studies

    Abstract: This report details laboratory and field experiments on BioPreferred® dust suppressants to assess performance and corrosion characteristics. Numerous bio-based dust suppressant products are marketed, but little data are available to assess performance for dust abatement and corrosion of common metals. A laboratory study used an air impingement device and the Portable In-Situ Wind ERosion Laboratory (PI-SWERL) to simulate wind speeds similar to those in field conditions for rotary wing aircraft. Laboratory corrosion studies used metal coupons imbedded in soil treated with dust palliative. Field trials were conducted using ground vehicle traffic to minimize cost and lower safety concerns while increasing surface wear from repetitive traffic. These studies clearly show that bio-based products demonstrate low corrosion potential with similar dust abatement performance to synthetic-based agents.

  • Incorporating Sentinel-1 SAR imagery with the MODIS MCD64A1 burned area product to improve burn date estimates and reduce burn date uncertainty in wildland fire mapping

    Abstract: Wildland fires result in a unique signal detectable by multispectral remote sensing and synthetic aperture radar (SAR). However, in many regions, such as Southeast Asia, persistent cloud cover and aerosols temporarily obstruct multispectral satellite observations of burned area, including the MODIS MCD64A1 Burned Area Product (BAP). Multiple days between cloud free pre- and postburn MODIS observations result in burn date uncertainty. We incorporate cloud-penetrating, C-band SAR-with the MODIS MCD64A BAP in Southeast Asia, to exploit the strengths of each dataset to better estimate the burn date and reduce the potential burn date uncertainty range. We incorporate built-in quality control using MCD64A1 to reduce erroneous pixel updating. We test the method over part of Laos and Thailand during April 2016 and found average uncertainty reduction of 4.5 d, improving 15% of MCD64A1 pixels. A new BAP could improve monitoring temporal trends of wildland fires, air quality studies and monitoring post-fire vegetation dynamics.

  • District closes fiscal year with day at the ballpark

    U.S. Army Corps of Engineers, Louisville District employees gathered at Louisville Slugger Field Sept. 26, 2021 to recognize and celebrate the hard work by district employees over the past year.

  • Courtesy docks below Gavins Point Dam removed for repairs

    On Sept. 28 and 29, the courtesy docks at the Nebraska Tailwater and the Training Dike boat ramps, both on the Missouri River below Gavins Point Dam near Yankton, South Dakota, will be removed to make routine repairs. The ramps will remain open without the use of the courtesy docks except when the docks are being removed and reinstalled.

  • USACE Vicksburg District announces new Inspection and Dam Safety Section chief

    VICKSBURG, Miss. – The U.S. Army Corps of Engineers (USACE) Vicksburg District has selected Ryan Reves as chief of the Inspection and Dam Safety Section in the Geotechnical Branch.

  • Chief of Engineers signs report for Florida Keys Coastal Storm Risk Management Study

    NORFOLK, Va. – Lt. Gen. Scott A. Spellmon, commanding general of the U.S. Army Corps of Engineers, signed the Chief’s Report for the Florida Keys Coastal Storm Risk Management (CSRM) Study, recommending the study’s findings for authorization by Congress.

  • MKARNS Nav Notice SWL 21-43 Lock 12 Normal Operations Resumed

    MKARNS - Normal operations have resumed at Ozark-Jeta Taylor Lock (No. 12) NM 256.8. The obstruction behind the downstream land wall miter gate (noted in Navigation Notice 21-38) has been removed.

  • MKARNS Nav Notice SWL 21-42 Norrell Lock 01 DS Approach - Channel Reopened

    MKARNS - The shoaling issue in the downstream approach to Norrell Lock (No.1) NM 10.3 has been resolved.

  • National Public Lands Day

    The Burnsville Lake team came together on September 23rd and 24th to plant 45 trees in Bulltown Campground in honor of National Public Lands Day. This day was established in 1994 and held annually on the fourth Saturday in September. The main goal behind this day is to promote connection between people and nature, inspire environmental stewardship, and encourage use of open space for education, recreation, and health benefits.

  • U.S. Army Corps of Engineers construction mission in Southern Europe bolsters stability, security in the region

    CAMPIA TURZII AIR BASE, Romania -- The rolling hills of the Romanian countryside provide a serene backdrop as an excavator fills a truck with fresh earth as part of one of many ongoing construction projects here in support of a broader effort to enhance the U.S. deterrence posture in Eastern Europe and bolster the security and capacity of U.S. allies and partners.