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  • Charlevoix channel dredging scheduled to conclude by May 15

    About 13,000 cubic yards of material is scheduled to be removed from the Charlevoix Harbor channel before May 15, as part of a maintenance dredging contract under the U.S. Army Corps of Engineers, Detroit District.  Great Lakes Dock and Materials, LLC., located in Muskegon, will perform the work for the Corps of Engineers for approximately $480,000 and place the dredged materials in open water in Lake Michigan. The state-approved open water is located about a mile and a half northwest of the harbor entrance. 
  • Development and Testing of the Sediment Distribution Pipe (SDP): A Pragmatic Tool for Wetland Nourishment

    Abstract: Standard dredging operations during thin layer placement (TLP) projects are labor intensive as crews are necessary to periodically move the outfall location, which can have lasting adverse effects on the marsh surface. In an effort to increase efficiency during TLP, a novel Sediment Distribution Pipe (SDP) system was investigated. This system offers multiple discharge points along the pipeline to increase the sediment distribution while reducing pipeline movements. An SDP Modeling Application (SDPMA) was developed to assist in the design of SDP field applications by quickly assessing the pressure and velocity inside the discharge pipe and approximating the slurry throw distances. An SDP field proof of concept was performed during a two-phase TLP on Sturgeon Island, New Jersey, in 2020. The SDPMA was shown to be an accurate method of predicting performance of the SDP. The SDP was successful at distributing dredge material across the placement site; however, further research is warranted to better quantify performance metrics.
  • USACE Continues to Embrace Innovation at the San Juan Harbor Dredging and Deepening Project

    San Juan, Puerto Rico – Recognizing the vital role the San Juan Harbor plays in the economy of Puerto Rico, the U.S. Army Corps of Engineers (USACE) Task Force Virgin Islands Puerto Rico (TF-VIPR) highlighted the beginning of the dredging and deepening phase of the San Juan Harbor during the First Bucket Ceremony hosted by Puerto Rico’s Governor, Pedro Pierluisi, and Puerto Rico Ports Authority Executive Director, Joel Pizá.
  • Corps of Engineers Start Outer Harbor Dredging in Holland, Michigan

    The U.S. Army Corps of Engineers, Detroit District, will begin dredging the outer harbor in Holland, Michigan, this weekend to remove about 31,000 cubic yards of sediment from the federal navigation channel. The King Co., based in Holland, Michigan was awarded a $901,885 contract to hydraulically dredge Holland and Grand Haven this spring. The expected completion for both harbors is May 31.
  • U.S. Army Corps of Engineers Issues IPOP Project Permit

    Today, the U.S. Army Corps of Engineers Pacific Ocean Division announced that it has issued a permit to IPOP, LLC to dredge and dispose of material in U.S. waters near Nome, Alaska.
  • USACE seeks comments on proposed work in Narragansett Bay in North Kingstown, Rhode Island

    The U.S. Army Corps of Engineers, New England District received a permit application to conduct work
  • Corps of Engineers begins Grays Harbor maintenance dredging April 8

    U.S. Army Corps of Engineers hopper dredge vessels Yaquina and Essayons begin Grays Harbor outer harbor maintenance dredging, April 8. Maintenance and navigation dredging are required in harbor areas, ports, and marinas, to support the state's economy.
  • Pilot Project Using Tickler Chains in Lieu of Deflectors at Fire Island Inlet to Moriches Inlet, New York, Borrow Sites

    Abstract: Risk for incidental take of sea turtles and sturgeon exists during hopper dredging operations throughout turtle and sturgeon habitats. Since 1992, draghead deflectors have been the main engineering tool used to minimize incidental hopper dredging takes of sea turtles and are also thought to reduce the chance of sturgeon impingement entrainment. Although reduced, turtle takes still happen annually, and the draghead deflectors reduce dredging productivity, increase fuel usage, and increase costs of operations. As such, there remains a need to research alternative turtle avoidance measures. The non-US dredging industry has used various versions of an engineering control called tickler chains (TC) in lieu of deflectors. If effective, TC could lower dredging costs and increase production in comparison to deflectors. This technical report describes a pilot study where TC were used in lieu of deflectors at Fire Island Inlet, New Y0rk. To the authors’ knowledge, this is the first time since the early 1990s that hopper-dredging has occurred without draghead deflectors along the east coast. No takes were recorded during the pilot study; however, no research was done to determine if sea turtles or sturgeon interacted with the TC. Recommendations for future TC research is provided in this technical report.
  • A Beneficial Placement Decision Support Framework for Wetlands: Case Study for Mobile Harbor, USA

    Abstract: The US Army Corps of Engineers, in the responsibility of maintaining navigational infrastructure, has a unique opportunity to improve coastal wetland resiliency and conserve coastal natural infrastructure through the beneficial use of dredged material for wetland restoration. Opportunities are widespread, and tools such as biophysical models can aid coastal managers in assessing habitat vulnerability and planning restoration. In this study, the Marsh Equilibrium Model was utilized in concert with observed data to predict future conditions and evaluate potential effects of beneficial use of dredged material to restore marshes in Mobile Harbor, Alabama. A range of site conditions and two restoration strategies were considered, and the subsequent impact to dredged material management area volumes evaluated. Results showed that wetland restoration via the thin-layer placement of dredged material can restore marsh elevation to combat sea level rise and conserve fill capacity at dredged material management areas. This approach is demonstrated for adoption nationwide by coastal managers.
  • USACE Jacksonville announces changes to Brevard Mid-Reach, South Reach beach renourishment

    USACE Jacksonville District announces changes to the 2024 Brevard County beach renourishment project due to delays in equipment availability.