13 Aug 2020

Corps of Engineers closes Missouri River Levee System L-536 breach near Corning, Missouri

OMAHA, Neb. – The U.S. Army Corps of Engineers, Omaha District closed another breach along the Missouri River Levee System L-536, northwest of Corning, Missouri Saturday.

12 Aug 2020

MKARNS Nav Notice SWL 20-49 Lock 4 Sailing Instruction Lifted

MKARNS - The sailing instruction for the downstream approach to Emmett Sanders Lock (No. 4) NM 66.0, as noted in Navigation Notice SWL 20-42 has been lifted.

12 Aug 2020

Volksweg Trail Extension Now Open to Cordova Park

The newest section of the Volksweg Trail at Lake Red Rock is now complete and open to the public.  This extension adds an additional 2.5 miles of trail from the Roberts Creek trailhead west to Cordova County Park.  The full length of the Volksweg is now over 17 miles.   

12 Aug 2020

Boat Launch Ramp to Close, Dam Face Work Continues

The U.S. Army Corps of Engineers Pittsburgh District’s East Branch Lake Dam announces its boat launch ramp will close Monday, Aug. 24 due to falling lake levels and urges continued caution to travelers as dam construction work continues.

11 Aug 2020

Mississippi River Commission schedules low-water inspection trip

The Mississippi River Commission will conduct its annual low-water inspection trip on the Mississippi River, August 24 – 28, 2020.

11 Aug 2020

Waste Management Disposal Services of Maine seeks permit for landfill expansion in Norridgewock

 The U.S. Army Corps of Engineers, New England District received a permit application from Waste Management Disposal Services of Maine, Incorporated, for proposed work in freshwater wetlands adjacent to 357 Mercer Road, Norridgewock, Maine. The work involves a 48.6 acre expansion of an existing landfill on the 933 acre property the applicant owns.

11 Aug 2020

Army Corps updates water release schedule at Francis E. Walter Dam

The U.S. Army Corps Engineers’ Philadelphia District updated the 2020 Francis E. Walter Dam Flow Management Plan. The Army Corps updated the plan, which states whitewater and fisheries releases will be scheduled if enough water storage is accumulated in the reservoir.

11 Aug 2020

Braddock Bay project complete, Area of Concern moves towards delisting

The USACE and U.S. EPA will host a media event with guest speakers, Thursday, August 13 at 1 p.m., at the Westpoint Marina at Braddock Bay located at 105 E Manitou Rd., Rochester, NY 14612, to celebrate the completion of the Braddock Bay ecosystem restoration project and moving the Rochester Embayment Area of Concern (AOC) one step closer to delisting.

11 Aug 2020

PUBLICATION NOTICE: Post-Project Monitoring of a Navigation Solution in a Dynamic Coastal Environment, Smith Island, Maryland: Year One of Post-Project Monitoring

Abstract: In 2018, jetties and a sill were constructed by the US Army Corps of Engineers (USACE) adjacent to the Sheep Pen Gut Federal Channel at Rhodes Point, Smith Island, Maryland. These navigation improvements were constructed under Section 107 of the Continuing Authorities Program. Material dredged for construction of the navigation structures and realignment of the channel were used to restore degraded marsh. Following construction and dredging, 1 year of post-project monitoring was performed to evaluate the performance of navigation improvements with respect to the prevention of shoaling within the Sheep Pen Gut channel, shoreline changes, and impacts to submerged aquatic vegetation (SAV). Given the short period of record after the completion of the navigation improvements, it was difficult to draw conclusions regarding stability of the channel, structures, and shoreline. Therefore, this report documents methodology and baseline conditions for monitoring, except for SAV, which was found to be potentially impacted by construction. A second year of monitoring was funded by the USACE Regional Sediment Management Program for fiscal year 2020. Findings can be used to inform plan formulation and design for USACE navigation projects by illuminating considerations for placement of structures to prevent shoaling and by informing SAV management decisions.

11 Aug 2020

PUBLICATION NOTICE: The Urban Ground-to-Ground Radio-Frequency Channel: Measurement and Modeling in the Ultrahigh Frequency Band

ABSTRACT:  Ground-to-ground radio communication and sensing within the urban environment is challenging because line of sight between transmitter and receiver is rarely available. Therefore, radio links are often critically reliant on reflection and scattering from built structures. Little is known about the scattering strength of different buildings or whether such differences are important to the urban ground-to-ground channel. We tested the hypotheses that (1) diffuse scattering from built structures significantly impacts the urban channel and (2) scattering strength of urban structures varies with surface roughness and materials.  We tested these hypotheses by measuring urban channels in Concord, New Hampshire, and Boston, Massachusetts, and via channel-modeling efforts with three-dimensional representations of the urban environment. Direct comparison between measured and modeled channels suggest that both of these hypotheses are true. Further, it appears that ray-tracing approaches underestimate the complexity of urban channels because these approaches lack the physical processes to correctly assess the power incident on and scattered from built structures. We developed a radio-geospatial model that better accounts for incident power on both directly visible and occluded buildings and show that our model predictions com-pare more favorably with measured channels than those channels predicted via typical ray-tracing approaches.