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FACT SHEET-Long Island Intracoastal Waterway, New York - Federal Navigation Channel

Maintenance and Stewardship

U.S. Army Corps of Engineers, New York District
Published Jan. 18, 2022

DESCRIPTION: This asset provides for a navigation channel 6 feet deep, 100 feet wide from the Federally improved channel in Great South Bay, opposite Patchogue, to the south end of Shinnecock Canal. The lengthy 33.6 mile project traverses the inland waters through the Great South Bay, the Bellport Bay, the Narrow Bay, the Moriches Bay, the Quantuck Bay and the Shinnecock Bay.

AUTHORIZATION: The Rivers and Harbors Act of August 26, 1937.

BACKGROUND: The last maintenance dredging cycle was completed in January 2019 in the Moriches Bay reach. The prior two maintenance dredging cycles included shoals within the same vicinity located in the Moriches Bay area. One cycle was completed in November 2014. Prior cycle was completed in November 2012 and was used to close the breach of the barrier island caused by Hurricane Sandy at Smith Point County Park.

STATUS: During FY22, funding will provide for commonly performed Operations & Maintenance (O&M) work including monitoring of the channel shoaling conditions, coordination with the US Coast Guard and other users and stakeholders, completing Plans and Specs and awarding a maintenance dredging contract.  Production of an annual hydrographic condition survey, and publication of the Controlling Depth Report on the District’s website (https://www.nan.usace.army.mil/Missions/Navigation/Controlling-Depth-Reports/) is also scheduled for this fiscal year. 


Edward Wrocenski
Project Manager
P: (917) 790-8636
Email: edward.wrocenski@usace.army.mil
U.S. Army Corps of Engineers, New York District
26 Federal Plaza
 New York, NY 10278