The failing jetties have been cited as a contributor to erosion at Port Jefferson Village's East Beach
Officials believe one of the few things that stands in the way of further erosion of Port Jefferson Village’s East Beach, which sits on the Long Island Sound at the end of Village Beach Road, are jetties, or rock pilings meant to protect the shoreline, at the mouth of Mount Sinai Harbor, just east of the Port Jeff beach. With the two town-owned structures in need of restoration, Brookhaven is looking for some additional funding.
The Brookhaven Town board voted unanimously at a July 12 meeting to submit grant applications to the New York State Green Innovations Grant Program and Local Waterfront Revitalization Program for additional money to work on the jetty reconstruction project.
The $8.6 million jetty project has been in the works for several years, but only truly got underway in 2016. The town is seeking reimbursement of about $1.3 million through the grants. The resulting $7.3 million net cost would be financed through an existing $3 million Dormitory Authority of the State of New York grant, originally provided through New York state Sen. Ken LaValle (R-Port Jefferson), and $4.3 million from a previous town bond resolution.
Councilwoman Jane Bonner (C-Rocky Point) said the old east and west jetties have holes from rocks collapsing, which allows sand to stream through. Age has not been kind to either structure, and the seaward sides of both jetties remain submerged at high tide. Hurricane Irene and Superstorm Sandy caused further damage to the jetties over subsequent years.
With the money the town already has along with these new grant bids, Bonner said she is optimistic reconstruction of the jetties will start some time in 2019.
“Those holes create a current at high tide that allows sand to get through,” Bonner said. “We are completely committed to taking all the necessary steps to make sure this gets done right.”
Brookhaven is the only Long Island municipality in charge of jetties, as the Army Corps of Engineers maintains all others, according to Bonner.
Brookhaven has also hired Melville-based Nelson & Pope Engineers & Land Surveyor, PLLC to at a cost of $151,800 for help in the Mount Sinai Harbor dredging project. The dredging will widen the inlet and relieve the pressure of the water hitting the jetties at high tide, according to Bonner. Widening the inlet will help flush out Mount Sinai Harbor, which would lead to cleaner water for both fish living in the harbor and the town’s shellfish at its mariculture facility.
The failing jetties have had an impact on the shoreline of Port Jeff Village. The bottom 15 feet of the bluff along East Beach had fallen 260 feet west of the rock revetment, according to a 2016 letter from Stony Brook-based GEI Consultants, a privately-owned consulting firm contracted by the village, to the village regarding its concerns about erosion. GEI also stated that repairs to the jetties should be the first step in alleviating erosion issues.
Bonner said some of the preliminary work already done has helped relieve the flow of water coming into the inlet and through the jetties, but until the real reconstruction starts the erosion of the local beach remains a problem.
Suffolk County Legislator Sarah Anker (D-Mount Sinai) said Mount Sinai Harbor contributes millions of dollars to community through tourism.
“It’s a very special harbor,” Anker said. “Repairing the channel should be a primary concern.”