The configuration of the site was largely shaped by the railroad and the old mill. The mill is all gone, as are the tracks, but the railroad grade itself now helps create a series of lagoons (pocket estuaries, as we often call them here). The result is a fairly natural interpretation of a largely artificial shoreline.
In my earlier post, I had suggested that the tracks might have followed a longer spit across the mouth of the main lagoon, but I realize that the remnant spit at the northeast end of the lagoon (on the bayside of the railroad causeway) is probably all there was.
There's not much wave action here and it may take a while for the beach to sort itself out, but the vegetation is beginning to take off. A large portion of the beach is already sprouting new salicornia (pickle weed), foreshadowing its future as a marsh as much as a beach. This site has a little of everything - a low energy beach, fringing marshes, a stream, multiple lagoons, and upland forest. It will be fun to watch it evolve in the coming years.