Annisquam River Dredging Plan Introduced

The U.S. Army Corps of Engineers, New England District, is proposing to perform maintenance dredging of the Annisquam River Federal navigation project (FNP) in Gloucester, Massachusetts. 

The work involves maintenance dredging of portions of the 8-foot-deep Mean Lower Low Water (MLLW) channel and anchorage, plus authorized overdepth dredging in the Annisquam River FNP.

Natural shoaling processes have reduced available depths to as little as 1.0 foot in portions of the 8-foot MLLW channel and anchorage making navigation hazardous or impossible at lower stages of the tide,” said Project Manager Erika Mark, of the Corps’ New England District, Programs/Project Management Division in Concord, Mass. “Maintenance dredging of approximately 140,000 cubic yards of sand and some gravel from approximately 20 acres of the authorized project area will restore the FNP to authorized dimensions.”

A private contractor, under contract to the government, will use a mechanical dredge and scows to remove the material and then transport it for placement at the Ipswich Bay Nearshore Disposal Site (IBNDS) and the Gloucester Historic Disposal Site (GHDS).

Under the plan, approximately 132,500 cubic yards of sandy material will be placed at the IBNDS and the remaining 7,500 cubic years of sand and gravel material will go to the GHDS.

Construction is expected to take between 3-4 months between Oct. 1, 2019 and March 15, 2020, said USACE.

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