Savannah Harbor, Dredged Material Containment Area (DMCA) 1N Dike Raising

Savannah Harbor DMCA 1N is approaching maximum capacity and will soon be unable to be used for dredge material containment. The proposed project includes clearing, grubbing and raising the perimeter dike around the 130-acre dredged material containment area (DMCA) along with the entrance ramp and the two southernmost pipe ramps, raising the existing cross-dike along with its existing double-barrel weir/water control structures, and raising both existing weir/water control structures in the southeast corner of the DMCA. The existing perimeter dike currently has a crest elevation of approximately 26 feet MLLW. After clearing and grubbing, the dike will be raised to a uniform elevation of 33 feet MLLW to gain additional capacity for containment of Savannah Harbor dredged material. An extension of the weir-riser will be added to the existing weir structures. The cross dike extending north/south will be raised to a crest elevation of 31 feet MLLW.