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FACT SHEET-Lake Montauk Harbor, New York - Federal Navigation Channel

Maintenance of Infrastructure and Stewardship

U.S. Army Corps of Engineers, New York District
Published Dec. 20, 2023

DESCRIPTION: This navigation asset is located on the north shore of the south fork of the eastern end of Long Island in the Town of East Hampton, Suffolk County, NY, approximately 125 miles by water east of the Battery, New York City; and provides for a channel, 12 feet deep at mean low water (MLW), 150 feet wide, extending from the 12 feet contour in Block Island Sound to the same depth in the existing boat basin east of Star Island; a boat basin 10 feet deep, 400 feet wide and 900 feet long, located northwest of Star Island; repair and extension shoreward of the east and west jetties; and addition of sports fishing facilities on the top of both jetties.  The total length of the channel is about 0.7 miles.

AUTHORIZATION: Rivers and Harbors Act of 1945 (P.L. 79-14).

COMMERCE: This asset serves as a Critical Harbor of Refuge during severe storms, and supports U.S. Coast Guard Station Montauk, NY Search & Rescue (SAR) missions. The harbor is also homeport to approximately 45 commercial fishing vessels, and supports 11.3 million pounds of commercial fish landings valued at $16.4 million, interstate ferry services, and at least eight commercial marinas.

BACKGROUND: This asset was last maintenance dredged by the U.S. Army Corps of Engineers (USACE) in Fiscal Year (FY) 2019, when approximately 37,000 cubic yards (CY) of dredged sand was removed and beneficially used along the adjacent shoreline west of the west jetty. Prior to that, the channel was maintenance dredged by USACE in FY2015, when approximately 19,000 CY of dredged sand was removed and used along the same adjacent shoreline west of the west jetty. Prior to that, the channel was maintenance dredged by USACE in FY2012, when approximately 12,000 CY of sand was removed, and also beneficially used along the same adjacent shoreline. During FY1996, an east jetty rehabilitation project was completed. 

STATUS: Dredging is next expected to occur in the latter part of 2024 with construction-phase work to deepen this Federal Navigation Channel, as part of a separate Lake Montauk Harbor, NY Navigation Improvement Project (See also: https://www.nan.usace.army.mil/Media/Fact-Sheets/Fact-Sheet-Article-View/Article/487490/fact-sheet-lake-montauk-harbor-navigation-improvement-project-ny/) Production of an annual hydrographic channel condition survey, and publication of a controlling depth report on the District’s website (https://www.nan.usace.army.mil/Missions/Navigation/Controlling-Depth-Reports/) is scheduled for FY2024. 


Alexander F. Gregory
Project Manager
P: (917) 790-8427
Email: alexander.f.gregory@usace.army.mil
U.S. Army Corps of Engineers, New York District
26 Federal Plaza
New York, NY 10278

District Area: NY # 1