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  • Berlin Lake seeks public input on master plan updates

    PITTSBURGH – The U.S. Army Corps of Engineers Pittsburgh District is seeking community feedback regarding proposed changes to the Berlin Lake Master Plan and will hold a 30-day public comment period beginning Sept. 27 and closing Oct. 27. The master plan update, based on previously collected-community feedback, will affect the future management of recreational activities and natural resource use at Berlin Lake for the next 25 years.
  • Corps of Engineers announces temporary closure at Gull Lake boat ramp

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, will temporarily close the boat launch at Gull Lake, near Brainerd, Minnesota, to reconstruct the ramp, beginning Sept. 27. The ramp will be closed for about two weeks.
  • Corps of Engineers seeks comments on draft master plan for its four western Minnesota reservoirs

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, is seeking public comments on its draft master plan and environmental assessment for Orwell Lake, near Fergus Falls, Minnesota; Lake Traverse, near Wheaton, Minnesota; Lac qui Parle Dam, near Watson, Minnesota; and Highway 75 Dam, near Odessa, Minnesota.
  • Corps of Engineers issues Northshore Mining Company permit

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District issued a permit to Northshore Mining Company today for discharges of dredged and fill material into waters of the United States resulting from its Tailings Basin Progression project.
  • Working Draft of 2021 Everglades Restoration Integrated Delivery Schedule available to the public

    The South Florida Ecosystem Restoration Task Force Working Group is sponsoring a virtual public engagement workshop for the U.S. Army Corps of Engineers on the Working Draft of the 2021 Integrated Delivery Schedule (IDS) on Wednesday, September 29, 2021 from 9:00 a.m. to 12:30 p.m. The U.S. Army Corps of Engineers, Jacksonville District invites partners, stakeholders, and the public to join us for the release of the Working Draft of the Integrated Delivery Schedule 2021 at the workshop. All participants are required to pre-register at: https://www.evergladesrestoration.gov/workshops/sept-29-2021-integrated-delivery-schedule-ids to receive a secure link allowing them to participate in the Zoom Webinar.
  • Lock and Dam 21 Closed to Visitors

    The U.S. Army Corps of Engineers, Rock Island District, is restricting visitor access to Lock and Dam 21 as it has closed due to road construction.
  • NR 21-32: Public invited to participate in Fall Lake Cumberland Cleanup, National Public Lands Day

    SOMERSET, Ky. (Sept. 21, 2021) – The U.S. Army Corps of Engineers Nashville District invites the public to participate in the Fall Lake Cumberland Cleanup Saturday, September 25th, 2021 on National Public Lands Day.
  • Corps of Engineers releases hunting map app

    SAVANNAH, Ga. – Officials at the three Army Corps of Engineers reservoir projects on the Savannah River have introduced a new mobile application to aid hunters. The free app will cover the Thurmond Lake, Russell Lake and Hartwell Lake areas.
  • USACE’s mobile Blue Roof sign-up vehicles are at new locations

    The U.S. Army Corps of Engineers is announcing the latest mobile locations for its Blue Roof program sign up starting Sept 14.
  • Corps of Engineers hosts open house at Lock and Dam 10

    ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, is hosting an open house at Lock and Dam 10, in Guttenberg, Iowa, Saturday, Sept. 25, in conjunction with GermanFest.

News Releases

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Tag: USACE
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  • Corps awards final cutoff wall contract for HHD rehabilitation

    The U.S. Army Corps of Engineers, Jacksonville District, awarded the final contract for the cutoff wall required as part of the ongoing rehabilitation of the Herbert Hoover Dike (HHD), the earthen structure surrounding Lake Okeechobee.
  • Corps increases flows to Caloosahatchee

    The U.S. Army Corps of Engineers Jacksonville District will increase flows from the W.P. Franklin Lock and Dam (S-79) to the Caloosahatchee estuary at a 7-day average rate of 650 cubic feet per second (cfs). Flows to the St. Lucie estuary remain at zero cfs as measured at the St. Lucie Lock and Dam (S-80). Releases will be made in a pulse pattern beginning on Saturday.
  • Update on levee rehabilitation in the Kansas City District

    The Kansas City District, U.S. Army Corps of Engineers would like to update our partners and the public on progress made in our levee rehabilitation program. There are 66 levee systems on target for repairs, some with breeches, some with other surface damage such as grass kill or scour holes. The Corps currently has 24 contracts awarded with another 16 currently advertised for bids or pending award. Contractors have begun moving dirt on 8 of the 24 awarded contracts – this number is increasing daily.
  • Corps of Engineers opens multi-use recreation areas

    The U.S. Army Corps of Engineers announced day-use and multi-purpose recreation areas around Fort Peck Lake will open May 1 to normal activities, following physical distancing and group limitations to reduce spread of COVID-19.
  • PUBLICATION NOTICE: Geochemical Fingerprinting of Sediment Sources Associated with Deposition in the Calcasieu Ship Channel

    Abstract: This Regional Sediment Management Technical Note (RSM-TN) demonstrates how geochemical fingerprinting techniques were used to distinguish probable sediment sources to the Calcasieu Ship Channel (CSC). These methods were applied to sediment samples collected from suspected source areas identified in past sediment budget studies. The techniques can be used by managers and stakeholders to make more informed decisions on best practices for managing sediment and mitigating sediment deposition within the channel.
  • USACE to host virtual public review of the Lewisville Lake Master Plan Revision

    The Fort Worth District, U.S. Army Corps of Engineers will host an online review to provide information and receive public input on the final draft revision of the Master Plan for Lewisville Lake. Normally, USACE would conduct a face-to-face public workshop to announce the availability of the draft revised master plan, but precautions associated with the COVID-19 virus have made it necessary to conduct the public involvement process online instead of hosting a face-to-face workshop.
  • PUBLICATION NOTICE: Analysis of Snow Water Equivalent Annual Maxima in the Upper Connecticut River Basin Using a Max-Stable Spatial Process Model

    Abstract: Recent advances from the science of spatial extremes and model regularization were applied to develop areal-based extremes of snow water equivalent (SWE) data for the upper Connecticut River Basin. Development of areal-based SWE exceedance probability estimates are of relevance for cool season probabilistic flood hazard analyses (PFHA). The approach profiled in this case study is applicable for other hydrometeor-ological variables of relevance to PFHA. The methodology conforms with Extreme Value Theory (EVT) for the analysis of spatial extremes; hence, there is a firm theoretical basis for extrapolation. Trend surface development is guided by EVT theory and recent advances for regularizing general linear models. R, a free software environment for statistical computing and graphics, and QGIS, a free and open-source geographic information system, were the primary tools used for product development and delivery. The following R software packages were primarily used during project execution: evd, Glmnet, maps, raster, rgdal, SDMTools, sp, and SpatialExtremes. R software packages exist in the public domain and support PFHA analyses of varying complexities. Their application herein is not an endorsement or recommendation. It is recommended that one would need to evaluate any particular R software package regarding its suitability for use for any specific application.
  • PUBLICATION NOTICE: Effects of Boric Acid and Water Content on Fundamental Properties of Proprietary Magnesium Phosphate Cement (MPC) Products

    Abstract: Magnesium phosphate cements (MPCs) have been used for decades in proprietary products for pavement repairs. However, products with high exothermic temperatures have short working times, and research is needed to overcome these unfavorable characteristics. The effects of different boric acid and water contents on the fundamental properties of concrete was investigated through 34 trial batch modifications on the following commercially available MPC products: (1) Premier Magnesia’s PREMag PGDM, (2) BASF Master Builder’s MasterEmaco T545, and (3) CeraTech Inc.’s Pavemend TR. Overall results indicated that the increase of boric acid and water content produced favorable decreased temperatures and increased set times but retardation in the early age development of compressive strength. Modifications in the PREMag PGDM product resulted in poor workability, inaccurate time of setting due to a thixotropic nature, and unacceptable compressive strength loss. The Pavemend TR product was significantly affected by the addition of boric acid resulting in nonrecoverable compressive and bond strength loss, excessive expansions, failure at low freezing and thawing cycles, and unacceptable times of setting for rapid-repair applications. The T545 product showed promising performance with 28-day recovery in compressive, flexural, and bond strengths and minimal differences in other properties when compared to the control mixture.
  • PUBLICATION NOTICE: Preliminary Assessment of Landform Soil Strength on Glaciated Terrain in New Hampshire

    Abstract: Accurate terrain characterization is important for predicting off-road vehicle mobility. Soil strength is a significant terrain characteristic affecting vehicle mobility. Collecting soil strength measurements is laborious, making in-situ observations sparse. Research has focused on providing soil strength estimates using remote sensing techniques that can provide large spatial and temporal estimates, but the results are often inaccurate. Past attempts have quantified the soil properties of arid environments using landform assessments; yet many military operating environments occupy high latitude regions with landscapes dominated by glacial deposits. This study took preliminary strength measurements for glacial landforms deposited from the Laurentide Ice Sheet in New England. A range of common glacial landforms were sampled to assess shear strength, bearing capacity, and volumetric moisture content. Glacial outwash landforms had the highest average shear strengths, glacial deltas the lowest. There was a significant negative correlation between silt content and shear strength of the soil, a significant positive correlation between bearing capacity and clay content, and a significant negative correlation with sand content. Moisture content of soils was inversely correlated to the abundance of gravel in the deposit. This work provides initial insight to this approach on glaciated terrain, but continued sampling will provide more robust correlations.
  • PUBLICATION NOTICE: Improved Vehicle Mobility by Using Terrain Surfacing Systems

    Abstract: Even for military vehicles designed with superior off-road capabilities, problematic soil conditions can impede mobility, particularly when many vehicles need to traverse the same path. Loose sands with little shear strength or wet silts or clays with little bearing capacity can deform rapidly under traffic. U.S. Army Engineer Research and Development Center researchers conducted field testing over several terrain conditions to measure performance of terrain surfacing systems designed to improve vehicle mobility. Soil conditions included poorly-graded sand, medium-strength silt, weak marsh, and two different slope conditions. Five different terrain surfacing, or matting systems, were tested that included four commercial variants and one U.S. government design. All testing took place at the ERDC Ground Vehicle Terrain Surfacing Test Facility in Vicksburg, Mississippi. Military test vehicles included a Marine Tactical Vehicle Replacement, Common Bridge Transporter, and M1 Abrams tank. Results from the testing showed that all matting systems provided notable improvement in the number of allowable vehicle passes over soft sands. Results varied for the different systems over weaker soils, with performance improved for those matting systems having thicker and stiffer panels. However, improved performance among matting systems came with a sacrifice of increased logistical burden. Data presented here-in include detailed site characteristics and soil deformation as a function of traffic.