21 Aug 2020

Officials to break ground on DeSoto, Tunica County seepage remediation projects

WHAT: Groundbreaking ceremony for the Commerce, Mississippi, Seepage Remediation Project and Clack/Norfolk, Mississippi, Seepage Remediation Project. WHO: Desoto County and Tunica County Partners, Yazoo-Mississippi Delta Levee Board, Mississippi River Commission, and Memphis District, U.S. Army Corps of Engineers. WHEN: Tuesday, August 25, 2020, at 4 p.m. WHERE: North of the intersection of Bailey Road and Levee Road. See the attached map and directions.

20 Aug 2020

Maintenance repairs on Longview Dam through October

KANSAS CITY, Mo. – The U.S. Army Corps of Engineers at Longview Lake announces maintenance and repair work to the embankment slopes (front and back) of Longview Dam in Kansas City, Mo. For the safety of lake visitors and workers, traffic lights are installed on the dam for the duration of the project while construction crews work to repair shallow slides and place additional bedding and riprap. These slides are not impeding the performance or integrity of the dam; however maintenance is required to prevent that.

20 Aug 2020

St. Francis River Basin Partners, Mississippi River Commission, and Corps of Engineers to break ground on seepage remediation projects

Groundbreaking ceremony for construction of multiple seepage remediation projects to include Below Senath, Missouri; Big Island, Arkansas; and Below Piggott/Below Hwy 90, Arkansas. The Below Senath Seepage Remediation project, in Dunklin County, Missouri, will reduce risk from the effects of under-seepage by performing drainage ditch work to change the flow of water into a more desirable pattern for the stability of the levee. Work began in May 2020, and the tentative completion date is October 2020. The local partner for the project is Levee District No. 4 of Dunklin County, Missouri, and the prime contractor is C&M Contractors.

20 Aug 2020

Special permit archery hunt scheduled for Perry Lake

PERRY, Kan. – The U.S. Army Corps of Engineers at Perry Lake announces the opening of the application process for its annual Special Archery Hunt at Longview and Rock Creek parks to be held Oct. 1 – Dec. 31, 2020 and Slough Creek park Oct. 16 – Dec. 31, 2020.  Applications are due Sept. 7, 2020. This is a specially permitted, archery-only hunting event. Hunting is not usually allowed in the park areas at Perry Lake; however, the U.S. Army Corps of Engineers hosts this annual hunt in areas that are closed to public hunting to prevent overpopulation of deer.

20 Aug 2020

Corps to temporarily close River Run East and West Parks

ASHDOWN, Ark. - The U.S. Army Corps of Engineers, Millwood Tri-Lakes Project Office is temporarily closing access to the River Run East and West Recreation Areas at 8 a.m. Aug. 23 to make repairs to the Millwood Lake stilling basin. Depending on weather, the stilling basin work should be complete by mid October.

20 Aug 2020

St. Paul resident selected for prestigious award

ST. PAUL, Minn. – The U.S. Army Corps of Engineers Headquarters in Washington, D.C., recently selected St. Paul, Minnesota, resident and St. Paul District Chief of Logistics Mike McGarvey as recipient of the National Meritorious Logistician of the Year Award.

20 Aug 2020

PUBLICATION NOTICE: Spatial and Temporal Variance in the Thermal Response of Buried Objects

ABSTRACT:  Probability of detection and false alarm rates for current military sensor systems used for detecting buried objects are often unacceptable. One approach to increasing sensor performance and detection reliability is to better understand which physical processes are dominant under certain environmental conditions. Incorporating this understanding into detection algorithms will improve detection performance. Our approach involved studying a small, 3.05 × 3.05 m, test plot at the Engineer Research and Development Center’s Cold Regions Research and Engineering Laboratory (ERDC-CRREL) in Hanover, New Hampshire. There we monitored a number of environmental variables (soil temperature moisture, and chemistry as well as air temperature and humidity, cloud cover, and incoming solar radiation) coupled with thermal infrared and electro-optical image collection. Data collection occurred over 4 months with measurements made at 15 minute intervals. Initial findings show that significant spatial and thermal temporal variability is caused by incoming solar radiation; meteorologically driven surface heat exchange; and subsurface-soil temperatures, density, moisture content, and surface roughness.

20 Aug 2020

PUBLICATION NOTICE: Shallow Water Seakeeping Tests with Columbia Class Submarine for Integration into the Environmental Monitoring and Operator Guidance System

Abstract: The Environmental Monitoring and Operation Guidance System (EMOGS) tool was developed in 1989 to provide a real-time risk analysis for underkeel clearance for the Ohio class submarine while in transit to the Naval Submarine Base at Kings Bay, Georgia. The program computes expected submarine response for input water level, depth, speed, wave, and other input conditions using shallow-water motion transfer functions generated by the strip theory tool, Large Amplitude Motion Program (LAMP). The integration of the new Columbia class submarine into EMOGS required that new transfer functions be developed using LAMP. The LAMP results are to be validated using measured motions from physical model laboratory testing. This report summarizes a laboratory study of the Columbia class submarine response in shallow-water waves. The study was conducted at the US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, and was done in direct support of the Naval Surface Warfare Center, Carderock Division. These seakeeping tests were performed in a shallow basin with a multi-directional wave generator, with measured still water vessel motions and measured vessel motion in regular and irregular waves of varying height, period, and direction.

20 Aug 2020

PUBLICATION NOTICE: Evaluating Collection Parameters for Mobile Lidar Surveys in Vegetated Beach-Dune Settings

Purpose: The goal of this Coastal and Hydraulics Engineering Technical Note (CHETN) is to compare collection parameters and gridding techniques for mobile lidar surveys of beach-dune systems in the northern Outer Banks, NC.

20 Aug 2020

PUBLICATION NOTICE: Utilizing Stream Flows to Forecast Dredging Requirements

Abstract: In recent years, the United States Army Corps of Engineers (USACE) has spent an average of approximately a billion dollars annually for navigation channel maintenance dredging. To execute these funds effectively, USACE districts must determine which navigation channels are most in need of maintenance dredging each year. Traditionally, dredging volume estimates for Operations and Maintenance budget development are based on experiential knowledge and historic averages, with the effects of upstream, precipitation-driven streamflows considered via general-rule approximations. This study uses the Streamflow Prediction Tool, a hydrologic routing model driven by global weather forecast ensembles, and dredging records from the USACE Galveston District to explore relationships between precipitation-driven inland channel flow and subsequent dredged volumes in the downstream coastal channel reaches. Spatially based regression relationships are established between cumulative inland flows and dredged volumes. Results in the test cases of the Houston Ship Channel and the Sabine-Neches Waterway in Texas indicate useful correlations between the computed streamflow volumes and recorded dredged volumes. These relationships are stronger for channel reaches farther inland, upstream of the coastal processes that are not included in the precipitation-driven hydrologic model.