Norwalk Harbor Maintenance Dredging Phase II

Located at the estuary of the Norwalk River, flowing into the Long Island Sound, the Norwalk Harbor is both a recreational and commercial harbor and seaport. There are 15 marinas, 13 private clubs with boating facilities, and 5 commercial port facilities located in and around the harbor, as well as more than 1,800 berthing spaces. The Norwalk Harbor is one of the most important centers of recreational boating, commercial shellfishing, and other water-dependent activities on the Western Long Island Sound. Flowing south for about 20 miles before flowing into the Long Island Sound, the Norwalk River and its reach from Wall Street to the Sound gives shape to the harbor. 

CASHMAN was contracted by the US Army Corps of Engineers to provide Maintenance Dredging to the Harbor.


  • CASHMAN removed approximately 200,000 Cubic yards of dredged material, at a rate of 2,000 CY/day, from the Norwalk River and disposed of it at the Long Island Sound Disposal Site 
  • Some of the clean material was used for capping other offshore disposal site used throughout the project 
  • Channel and anchorage areas were dredged to depths ranging from -6 to -12 feet 
  • Work was completed on schedule in accordance with contract, state, local and other applicable regulations 
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US Army Corps of Engineers, New England District
$4.9 million
Oct. 2008 – Feb. 2009