27 Apr 2020

PUBLICATION NOTICE: Investigation into Laboratory Bathymetric Measurement Techniques

ABSTRACT: There is no universally accepted way to accurately and efficiently measure bathymetry in laboratory hydraulic models. Remote sensing techniques can measure bathymetry without making contact with the model, and some remote sensing techniques can measure the bathymetry in laboratory models without draining the water. The four categories of remote sensing technology investigated in this report are echo sounding technology, laser technology, image processing technology, and radar technology. The technology of each category has strengths and limitations, but can be used in the laboratory to measure bathymetry. Echo sounding technology works well in environments with suspended sediment, but the accuracy is reduced by large beam footprints. Laser technology does not perform as well with suspended sediment but can provide high-accuracy bathymetric measurements. Stereophotography, discussed in the image processing technology section, requires optically clear water and can provide very accurate bathymetric mapping. Radar technology can be very helpful when sub-bottom stratigraphy is important. Technology from each of the categories has been scaled for field application to measure bathymetry and submerged coastal structures.

27 Apr 2020

PUBLICATION NOTICE: Evaluation of the Potential Impacts of the Proposed Mobile Harbor Navigation Channel Expansion on the Aquatic Resources of Mobile Bay, Alabama

Abstract: This report assesses potential impacts to aquatic resources resulting from proposed navigation channel expansion activities within Mobile Bay, Alabama. This work was conducted for the U.S. Army Corps of Engineers (USACE) Mobile District, to support development of a supplemental Environmental Impact Statement. Changes in water quality and hydrodynamics were evaluated for potential impacts to benthic macroinvertebrates, wetlands, submerged aquatic vegetation, oysters, and fish. The assessment includes extensive characterization of baseline conditions, evaluation of estimated post-project conditions related to aquatic resource habitat (e.g., changes in salinity, dissolved oxygen). An analysis of potential impacts related to a 0.5-m sea level rise scenario were also evaluated. Results suggest that no substantial impacts in aquatic resources within the study area are anticipated due to project implementation, as the area of greatest potential changes to environmental conditions are already adapted to natural shifts in salinity (and other factors), and to conditions resulting from the existing navigation channel. Although sea level rise has the potential to alter aquatic resource habitats with Mobile Bay, additional impacts related to project implementation remain negligible under the 0.5-m sea level rise scenario.

26 Apr 2020

CRREL, Area Fire Departments and the NH Department Environmental Services work to contain spill

The Cold Regions Research and Engineering Laboratory discovered a Number 2 heating oil leak from a boiler at its facility at approximately 4 p.m., Saturday, April 25. The CRREL facility is located at 72 Lyme Road in Hanover. No injuries have been reported. CRREL, along with the Hanover, Lebanon, Hartford and Norwich Fire Departments and the New Hampshire Department for Environmental Services are working together to contain the spill. Residents are asked to stay away from the area at this time.

8 Apr 2020

DoD High Performance Computing Modernization Supports the Fight Against COVID-19

From modeling the movement of how droplets travel through an aircraft to conducting virtual screenings of vaccine possibilities, the Department of Defense High Performance Computing Modernization Program has a powerful weapon in the fight against COVID-19—supercomputers.

27 Mar 2020

CRREL employee tests positive for COVID-19

A U.S. Army Engineer Research and Development Center employee assigned to the Cold Regions Research and Engineering Laboratory, based in Hanover, New Hampshire has tested positive for COVID-19. The employee is currently in a quarantine status at home. All personnel who have come into contact with the infected employee have been notified and the laboratory continues to enforce safety measures to protect the workforce. The ERDC is continuing to restrict access to only mission critical personnel and essential services contractors at its facilities in New Hampshire and across the nation. In addition, the organization continues to closely adhere to all official federal and state safety and health directives to protect the workforce and prevent the spread of COVID-19.

1 Oct 2019

Multi-stakeholder, During Nearshore Event Experiment begins pilot study

Duck, N.C., -- The collaborative During Nearshore Event Experiment pilot study is now underway along the Outer Banks of North Carolina, home to the U.S. Army Engineer Research and Development Center's Coastal and Hydraulics Laboratory’s Field Research Facility.

13 Sep 2019

PUBLICATION NOTICE: Forest Cover Index for Tree Cover Detection Using Landsat-7 Multispectral Imagery

The US Army Engineer Research and Development Center has published the report/note described and linked below. Approved for public release; distribution is unlimited.Report Number:ERDC/GRL TR-19-1Title:Forest Cover Index for Tree Cover Detection Using Landsat-7 Multispectral ImageryAuthor(s):Luisa I. Feliciano-Cruz, Sarah J. Becker, Kristofer D.

11 Sep 2019

PUBLICATION NOTICE: Demonstration of Electro-Osmotic Pulse and Dehumidification Technologies to Mitigate Corrosion in Earth Covered Magazines: Final Report on Project F08-AR23

The US Army Engineer Research and Development Center has published the report/note described and linked below. Approved for public release; distribution is unlimited.Report Number:ERDC/CERL TR-19-17Title:Demonstration of Electro-Osmotic Pulse and Dehumidification Technologies to Mitigate Corrosion in Earth Covered Magazines: Final Report on Project

10 Sep 2019

PUBLICATION NOTICE: Validation of Numerical Modeling for Flows near Draghead in Operation

The US Army Engineer Research and Development Center has published the report/note described and linked below. Approved for public release; distribution is unlimited.Report Number:ERDC/CHL CHETN-V-24Title:Validation of Numerical Modeling for Flows near Draghead in OperationAuthor(s):Morgan M. Johnston and Allen HammackPurpose/Abstract:Fish and

10 Sep 2019

PUBLICATION NOTICE: Demonstration and Evaluation of Eurasian Watermilfoil Control using Aquatic Herbicides in Fort Peck Lake, MT

The US Army Engineer Research and Development Center has published the report/note described and linked below. Approved for public release; distribution is unlimited.Report Number:ERDC/EL TR-19-16Title:Demonstration and Evaluation of Eurasian Watermilfoil Control using Aquatic Herbicides in Fort Peck Lake, MTAuthor(s):Rebecca L. Podkowka, Kurt D.