The geophysical environment at LEO-15 consists of a system of sand ridges extending north and east from the coast. The LEO-15 site is located in 11m deep water on the southern end of Beach Haven ridge (shown as the closed contour in the map). These ridges consist largely of medium sand on top of a bed of holocene lagoonal mud between the ridges.

The bathymetry data for these maps was obtained from USGS-Processed NOS Digital Bathy soundings. and the coastline from the NOAA/NOS medium resolution coastline database.