Great Lakes Dredge & Dock Co. LLC, Houston, Texas, was awarded a $25,638,900 firm-fixed-price contract for maintenance dredging of Portsmouth Harbor and Piscataqua River. Bids were solicited via the internet with two received. Work will be performed in Newington, New Hampshire; and Eliot, Maine, with an estimated completion date of April 1, 2022. Fiscal 2021 Corps of Engineers civil construction; non-federal improvement; contributed funds for the beneficial use of Massachusetts Department of Conservation and Recreation; and operation and maintenance, Corps of Engineers funds in the amount of $25,638,900 were obligated at the time of the award. U.S. Army Corps of Engineers, Concord, Massachusetts, is the contracting activity (W912WJ-21-C-0027).