Twelve-Mile Artificial Reef

12-Mile Artificial Reef

12.0 nautical miles from Moriches and Shinnecock Inlets, 1.33 sq miles
Depth: 123 - 143 ft






rock reef
A hopper barge full of rock

All manner of concrete, steel, and stone rubble from dredging, demolition projects, and other construction is used as artificial reef materials. This material is generally available at very low cost or free from construction companies who are more than happy to get rid of it. Transportation costs determine where this material is used by the Reef Program.


Delaware Artificial Reefs

Delaware has a string of artificial reef sites in the Delaware bay, but they are of little interest to divers. Most of the sites are quite shallow and perilously close to the shipping lanes, several of them were actually reduced for this reason. The conditions in the bay are hardly good for diving. The reefs consist mostly of concrete rubble from construction in Philadelphia and other cities on the river. Also shown is New Jersey's sole artificial reef in the bay.