Newburyport Harbor and North Point Plum Island

The proposed action involves maintenance dredging of the Newburyport Harbor Federal Navigation Project (FNP) on the Merrimack River in Newburyport, Massachusetts (Attachments 2, 3, and 4). It is the responsibility of the USACE to maintain this FNP and to ensure shoaling does not present a hazard to vessels navigating the channel. This maintenance dredging effort involves the removal of about 220,000 cubic yards (cy) of sandy material that has shoaled areas of the 9-foot-deep Mean Low Water (MLW), 200-foot-wide inner harbor channel, and the 15-foot-deep MLW, 400-foot-wide entrance channel of the FNP. Larger quantities of dredged material, in excess of 220,000 cy, may require removal based on updated bathymetric surveys of the channel shoaling. This excess material may include an additional 30,000 cy for a total of 250,000 cy resulting in an increase to the quantities identified and will be placed at either of the placement sites described below.

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