Great Lakes Dock and Dredge, Inc. will be conducting maintenance and improvement dredging in Portsmouth Harbor and Piscataqua River, Newington, New Hampshire and Eliot, Maine starting 1 November 2021 to 1 April 2023. 

Operations will be conducted 24 hours a day, 7 days a week, and transiting the dredged material south to Nantasket Beach as well as to the Isle of Shoals North disposal site.  The attached haul route shows the width of the approved route.  Fishermen should remove gear from the haul route immediately.  Maine DMR works with the US Army Corps of Engineers (USACE) to provide notice to fishermen of these routes, but did not receive final confirmation of this route until today.  According to the USACE, dredging will begin on or about Nov 16th – the initial material SHOULD be going to MA nearshore sites BUT there is a possibility they may have some material would need to go to IOSN.  Blasting will begin in December, with all of that material going to IOSN.