US Army Corps of Engineers
New York District

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FACT SHEET-Green Brook Sub Basin

Flood Risk Management Project

Published Jan. 8, 2013

DESCRIPTION: The Green Brook Sub Basin is located within the Raritan River Basin in north-central New Jersey in the counties of Middlesex, Somerset and Union. It encompasses 13 municipalities and drains approximately 65 square miles of primarily urban and industrialized area. For the majority of the project area, the most damaging floods of record resulted from the August 2, 1973 storm, Tropical Storm Floyd on September 16, 1999 and April 15-17 2007 Nor’easter. Eight deaths were attributed to these floods. The Final General Reevaluation Report (GRR) and Supplemental Environmental Impact Statement (SEIS), dated May 1997 recommended flood protection for the Lower Basin and Stony Brook Basin, and is supported by the project sponsor, the New Jersey Department of Environmental Protection. Based on this report and input obtained during the public review period, the State of New Jersey requested that the upper portion of the project be deferred, pending additional consideration of alternatives. The State of New Jersey has requested that a reevaluation of the deferred upper portion of the project be initiated. This effort will be accomplished using General Investigations (GI) funding with a GRR issued for the Upper Basin.  


AUTHORIZATION: This project is authorized for construction in Section 401a of the Water Resources Development Act of 1986, with the following cost sharing requirements: Local interests will provide lands, easements, rights-of-way, and relocations, pay 25 percent of total project costs (of which at least 5 percent is cash), and bear all costs of operation, maintenance, and replacement of flood control facilities. Federal share is 75 percent of total project costs.  


STATUS: A Project Cooperation Agreement was signed 24 June 1999 with the State of New Jersey. The Bound Brook portion of the project has been completed and consists of the following project features: Segment U levee, floodwall; Segment R1 levee; Talmage Avenue Bridge raising; Segment R2 Levee, Floodwall and Pump Station; Segment R2 NJ Transit Closure Gate and Diversion Pipes; Segment U Bendway Weirs; Segment R2 South Main Street Closure Gate; E.Main Street/Lincoln Blvd. Bridge raising; Segment T levee, pump station and closure gate; Segment R-2 Tie-off, Segment T modifications; the East Main St. storm sewer line and the Conrail Bridge demolition.  The LOMR was issued by FEMA on July 18, 2016.  The ribbon cutting was held on August 15, 2016 in Billian Legion Park, Bound Brook, N.J.

The remaining portions of the project that have been completed are as follows: Finderne Farm wetland mitigation site; flood proofing of 500 Union Avenue in Bound Brook; volunteer buyout and demolition of homes on Prospect Place in the Borough of Middlesex.


The following project features are currently completed in the Borough of Middlesex: Segment B1 Sebrings Mills Bridge Raising, Levee, Pump Station and Floodwall. Additional portions of the project within Middlesex specifically the design of Segments B2 & B3 are complete.  The Construction award of Segment B3 occurred on October 14, 2016.  Contractor (CMS) is currently scheduled to substantially complete the levee/flood wall/ pump station wetwell and foundation by May 31, 2018. Segment B2 was awarded on February 16, 2017 to Carbro Constructors. Contractor currently scheduled to substantially complete the levee/flood by May 31, 2018.  Segment C1, Contract 1 (Pump Station); Segment C1, Contract 2 (floodwall) and Segment C1, Contract 3 (Culverts/Pipe Crossing under NJ Transit Raritan Valley Line) and the Piscataway Non-structural are scheduled to be awarded by 30 Sep 2018.


Estimated Project Costs: The total estimated project cost is $656,049,000. To date the NY District has received $185,577,000 in Fed funds. The FY 18 budget amount is $20,000,000.  The FY 19 President’s Budget amount is $5,000,000.



Mr. Robert Greco, Project Manager

U.S. Army Corps of Engineers

New York District

Phone: (917) 790-8394


Programs and Project Management Division

26 Federal Plaza

New York, NY 10278-0090





Current as of February 2018