The major geomorphological feature is the extensive flood-tide delta at the present location of Barnegat Inlet and its variety of forms and sediment types.
The major channels and their distributaries dissecting the flood-tide delta are sites of coarser sediments, usually with fine sand and shell lining the channel.
The Great Egg Harbor is a relatively small site, and it is dominated by the flood-tide delta composed of fine and very fine sand.
The quantity of sand entering the Great Egg Harbor estuary is apparently insufficient to maintain the complete flood-tide delta system.
The very large flood-tide delta at Fire Island Inlet is probably related to the persistence of that inlet compared to other sites discharging into Great South Bay as well as the extensive migration of the inlet at the western margin of the barrier, more than 8 km from 1825 to 1941 (Smith et al.
The inlet margin of the delta is composed of the coarsest sediment (Pratt and Stauble, 2001); the dredged channels incorporate some gravel as well as shell debris and coarse sand that extend through and at the margins of the flood-tide delta (Dooley, 1974).
As a result, the flood-tide delta was rejuvenated at this temporal interval and repeatedly extended into the estuary.
The existing flood-tide delta is continuing to evolve and has a very complex pattern of channels (Fig.