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Severe beach erosion at Surfside, Texas caused by engineering changes to the coast and rivers

Severe beach erosion at Surfside, Texas caused by engineering changes to the coast and rivers. Richard L. Watson, Ph.D. TexasCoastGeology.com (361) 749-4152. Narrated Version Available.

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Severe beach erosion at Surfside, Texas caused by engineering changes to the coast and rivers

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  1. Severe beach erosion at Surfside, Texas caused by engineering changes to the coast and rivers Richard L. Watson, Ph.D. TexasCoastGeology.com (361) 749-4152

  2. Narrated Version Available • A narrated version of this slide show is available. It is a recording of the actual presentation at GSA Denver. • You can click here to download a narrated copy of the presentation.  It is about 13 MB, so it will take time to download.   • Download the file surfsidesound.pps

  3. Beach Erosion at Surfside, 1/11/2007 TexasCoastGeology.com

  4. A River of Sand,Sand Movement in the Surf Zone • 700,000 to 800,000 cuyd/yr • 250 Dump Trucks Per Day • One Dump Truck Every 6 Minutes TexasCoastGeology.com

  5. Sabine TexasCoastGeology.com

  6. Galveston East Jetty, 23 million cubic meters of sand stored(4 million dump trucks) TexasCoastGeology.com

  7. 7.6 million cubic meters lost from the beach TexasCoastGeology.com

  8. The Octagon, 1969 From Surfrider Foundation website

  9. The Octagon, 2000 From Surfriders website From Surfrider Foundation website

  10. H. Rita Landfall, 2005 TexasCoastGeology.com

  11. Surfside Village after Rita TexasCoastGeology.com

  12. Surfside Village, TX after Rita TexasCoastGeology.com

  13. Freeport Jetties, Surfside Freeport Channel New Delta Old DeltaLocation TexasCoastGeology.com

  14. Brazos River Deltas 1935 River moved in 1929 Location of Surfside New Delta Old Delta TexasCoastGeology.com

  15. Brazos River Delta, 1938 Location of Surfside OLD NEW

  16. Brazos River Deltas 1954 Location of Surfside Old Delta New Delta TexasCoastGeology.com

  17. Brazos R. Sediment Discharge From Mathewson & Minter, 1976

  18. Brazos Deltas circa 2002 Surfside Old Delta New Delta

  19. Historic Shorelines, Surfside 2000 1980 1960 1950 1930 (river moved in 1929) From Texas General Land Office, Data by Bureau of Eco. Geol., Aerial Photo 2006

  20. Freeport dredging doubled TexasCoastGeology.com

  21. Relative Sea Level Rise, Galveston, TX From James Gibeaut, Bureau of Economic Geology, Univ. Texas, Austin

  22. Surfside has many causes of shoreline retreat • Brazos River mouth and delta moved • Freeport Entrance greatly enlarged • Subsidence due to water extraction • Updrift sand impoundments at jetties • Updrift sand loss at man-made inlet • Sea level rise • Reduced sand from rivers due to dams

  23. New Brazos River Delta, 1999 Surfside Village San Bernard River OldShoreline

  24. All Storms Since 1851 TexasCoastGeology.com

  25. That’s All Folks! Richard L. Watson, Ph.D. TexasCoastGeology.com (361) 749-4152 You can click here to download a narrated copy of the presentation.  It is about 13 MB, so it will take time to download.   Download the file surfsidesound.pps.   

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