Table 5. Base width of measured dunes in 1981. Measurements show dune width 

 between increasing elevations above 2.4 meters MSL on the seaward 

 side and decreasing elevations below 2.4 meters MSL on the landward 

 side. 



STUDY DUNES 



Width of dune base 



(m) 





North half 







South half 





1976 



1977 



1981 



1976 



1977 



1981 



15.2 



39.6 



91. 4^ 



9.1 



24.4 



91.42 



29.0 



30.5 



33.5 



30.5 



36.6 



39.6 



38.1 



45.7 



50.3 



42.7 



51.8 



53.3 



30.5 



53.3 



56.4 



30.5 



33.5 



39.6^ 



21.3 



24.4 



29.0 



27.4 



30.5 



36.6 



Unplanted control dune 

 366-meter sea oats 

 Dune-width extension 

 335-meter bitter panicum 

 366-raeter bitter panicum 



NATURAL DUNES 



1974 



1981 



91 meters North of Ranger Station 



Access Road 

 Pedestrian Traffic (18 meters south) 

 Pedestrian Traffic 



(2.25 kilometers south) 

 Pedestrian Traffic 



(2.6 kilometers south) 



70.1' 



82,3' 

 91.4 



79.2 

 91.4 



^Does not include the one cross section where the hurricane breach occurred. 



^Dune width values for natural dunes show that at least the indicated width 

 of dune is 2.4 meters above MSL. 



32 



