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CNB Hunting/Fishing: NJ's Artificial Reef Program/Deepwater Reef Site

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On June 8, 2020, Marine Fisheries Administration staff deployed a 150-foot long caisson gate on the Deepwater Reef site (pdf). It now rests in 125 feet of water and rises off the bottom 30 feet at the following coordinates: 38*58.300 x 074*10.900 A caisson gate is a barrier used to dam off the open end of a dry dock and is constructed of heavy gauge steel with several tons of ballast in the keel. The deployment is sponsored by The Sportfishing Fund, an organization dedicated to artificial reef building. Caisson Gate Under Tow To Reef Location Caisson Gate Sinking Click images to enlarge Deployments of caisson gates on the Atlantic City and Cape May occurred in 2019. Vessels and structures such as these, after being emptied of all machinery and fluids and thoroughly cleaned, are inspected by the U.S. Coast Guard and DEP before sinking. Due to the thickness and quality of steel used in their construction, staff expect the service life of this artificial reef to last more than 75 years. Artificial reef deployments become home to more than 150 marine organisms including black sea bass, tautog, summer flounder, lobsters, crabs, and mussels. They will surely also become prime destinations for SCUBA divers and anglers alike.

 

Since 1984, the Bureau of Marine Fisheries has been involved in an intensive program of artificial reef construction and biological monitoring. The purpose is to create a network of artificial reefs in the ocean waters along the New Jersey coast to provide a hard substrate for fish, shellfish and crustaceans, fishing grounds for anglers, and underwater structures for scuba divers.

 


 

Artificial reefs are constructed by intentionally placing dense materials, such as old ships and barges, concrete and steel demolition debris and dredge rock on the sea floor within designated reef sites. At present, the division holds permits for 17 artificial reef sites encompassing a total of 25 square miles of sea floor. The reefs are strategically located along the coast so that 1 site is within easy boat range of 12 New Jersey ocean inlets.

Within each reef site, which range in size from one-half to over four square miles, numerous "patch reefs" have been constructed. A patch reef is a one-half to 5-acre area where one barge load of material has been deployed. In total, over 1200 patch reefs have been constructed on the state's 15 reef sites since the program began. Reefs are now being used extensively by anglers and divers who catch sea bass, blackfish, porgy and lobster.

Research projects designed to investigate the biology and ecology of ocean reefs completed during the past year included the food habits of black sea bass and the colonization of reef structures by blue mussels, barnacles and other marine invertebrates. Such studies help assess the effectiveness of reef construction efforts in providing habitat for New Jersey's marine life.

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