No replinishment = no sand beach. It will be eroded. The ocean is rising
If you don't replenish the beaches around there then you have to let nature take its course, which means because of a rising ocean on the eastern seaboard that you'll have to get rid of any structures/roads that are near the ocean and let the beach "back up" naturally. Eventually that will happen anyway no matter what we do. You can't stop a rising ocean(over say next 50 to 100 years). A non stop 300 mile long artificial reef is not realistic and would destroy all the fun sand breaks. A reef setup for a few blocks would be really cool though.
That's basically your two options.
Sand sand sand... It's the biggest variable IMHO. Wrong sand equals zero sandbars. Seems like common sense to me. This grainy sand they keep pumping is pretty much useless.. Is there no banks with fine sand left??
There's a common misconception when talking about artificial reefs in the context of beach stabilization, and surfing. The misconception is that the reef itself will serve as a surfing resource. While that may be true in some cases, the main purpose of artificial reefs along our coastline would be to direct and control the movement of sand. Artificial reefs alone are not a magic bullet. There is no magic bullet. It is, at best, PART of the answer. What hard structures like reefs can do is create sand bars... engineer an artificial reef system and the sandbars will take care of themselves. This, along with strategic sand pumping, gives us the best shot at beach stabilization, property protection, and resource conservation.
The best way to challenge the science based Army Corp. is to use their "own science" as an alternative as well as economic benefits of surf able beaches in the eyes of local politicians and business community. In the short term play close attention to the size of sand at study sites by the Army Corp., sand is measured in millimeters. So for maintaining ideal surf able sand bars as smaller grain sand packs better is 3mm-5mm while courser sand from 5mm-8mm shifts with long shore currents creating deep drop offs/shore breaks
You guys gotta try to fight this. It's happening everywhere, unfortunately you got it first and the worst, now you get stuck with the burden of creating a model and precedence for the rest of the coast dwellers and surf community. From what I gather, they have pretty much given up on Plum Island in MA, so beating these proposals down is not out of the question.
I'm confused why Island Beach State Park needs these dunes. There's nothing there to protect- which is why I love surfing there.
EDIT: Nothing man made to protect, I mean. Except the governor's mansion and a couple restrooms and lifeguard stations.