APPENDIX B: HIGH WATER CONTOUR MAPS 
The series of contour maps in this Appendix are segments of the National 
Ocean Service Storm Evacuation maps for Houston, Anahuac, Winnie, Galveston, 
Alvin, and Freeport, Texas. Each segment covers an area approximately 6 miles 
wide and 8 miles long and has a contour interval of 5 ft. High water marks, 
surveyed by the Galveston District, CE, are plotted on the maps. Not all 
maps contain a high water mark but are included for reasons of continuity. 
Each high water mark, written in feet above NGVD, is represented by a A 
on the contour maps. 
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