 Long Beach on Long Island, New York, is an example of what can happen when there's no beach renourishment. So the entire island under? Underwater. Yep. After Superstorm Sandy destroyed more than 1,000 homes here, the Corps renourished and built up the beach. What we found is that where you had a stable, well-maintained beach, berm, and dune system, the damages were extremely less than where you did not.