1. Bureau of Economic Geology The University of Texas at Austin

2. GEOTUBES ALONG THE UPPER COAST Preliminary Observations James Gibeaut Coastal Coordination Council Executive Committee Special Meeting November 12, 2001

3. Long-term Average Annual Rate of Shoreline Change

4. Geotube Schematic Approx. 30 ft Approx. 7 ft

5. InstallationCovered and vegetated ExposedMaintenance

6. Treasure Island July 19, 2001

7. Geotube Locations July 2001 Rollover Pass San Luis Pass Gilchrist East 6,200 feet Gilchrist East Total = 6.32 miles Gilchrist West Gilchrist West14,400 Dellanera Dellanera 1,590 Pocket Park 2 Pocket Park 2 380 Riviera Riviera 590 Pirates Beach Pirates Beach 8,540 Treasure Island, North, Middle, South Treasure Island 1,650

8. 2001 July 1997 Nov 1998 Pre- Frances 1998 Post- Frances 2000 May LIDAR Topographic Images Gilchrist East Geotube Area Rollover Pass Gulf of Mexico 1,000 ft

9. Pirates Beach on Galveston Island June 14, 2001

10. Exposed Geotubes June 13, 2001 ProjectExposed (ft)% Exposed Gilchrist, East1,67027 Gilchrist, West10,63074 Dellanera41326 Pocket Park 200 Riviera00 Pirates Beach85010 Treasure Isl.96058 Total14,52043

11. Beach Profile Gilchrist West (GLO-021) Height in meters Distance in meters geotube

12. GLO-021 Profile Location Sept. 23, 1999

13. June 13, 2001 GLO-21 Profile Location July 18, 2001

14. Website www.beg.utexas.edu/coastal/coastal01.htm