To the Editor:

There seems to be some general misunderstanding about the two different types of dunes found on Long Beach Island.

Imagine a 9-foot-long cement driveway with a mound of sand near the top a foot high. Now lay a garden hose down so it is aimed up the driveway. As long as the hose doesn’t pound at the sand mound, the mound will hold back the water and stop it from traveling farther up the driveway.

March 4, 2015