APPENDIX A: SURVEY DATA 



1. Contour diagrams constructed from the bathymetric survey data are 

 presented in this appendix. The profile lines surveyed are identified on each 

 diagram. Contours are in half meters referenced to the National Geodetic 

 Vertical Datum (NGVD) . The distance offshore is referenced to the Field 

 Research Facility (FRF) monumentation baseline behind the dune. 



2. Changes in FRF bathymetry diagrams constructed by contouring the 

 difference between two contour diagrams are also presented with contour inter- 

 vals of 0.25 m. Wide contour lines show areas of erosion. Other areas 

 correspond to areas of accretion. Although these change diagrams are based on 

 considerable interpolation of the original survey data, they do facilitate 

 comparison of the contour diagrams . 



Al 



