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READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



MR 81-1 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



HYDRAULICS AND STABILITY OF FIVE TEXAS INLETS 



5. TYPE OF REPORT a PERIOD COVERED 



Miscellaneous Report 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfa; 



Curtis Mason 



8. CONTRACT OR GRANT NUMBERfsJ 



PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-FR) 



Kingman Building, Fort Belvoir, Virginia 22060 



F31232 



It. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



January 1981 



13. NUMBER OF PAGES 



14. MONITORING AGENCY NAME ft ADDRESS(II dHlerant from Conlrolllne Olllce) 



15. SECURITY CLASS, (ol thia report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT fo/ Ui/s ReporO 



Approved for public release, distribution unlimited. 



17. DISTRIBUTION STATEMENT (ot the aba 



ed In Block 20, II dlllereni trorrt Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue on reverse aide it neceeaary and identity by block number) 



Hydraulics Inlet-bay systems Inlet stability Texas Tidal inlets 



2Qv ABSTRACT fCozrtfinjc aa r«v«rM ofifB F/ n«(re«aACy and. Identity by block numbar) 



Existing data on tides and currents of five Texas inlets (Freeport Harbor 

 entrance, San Luis Pass, Galveston Bay entrance. Rollover Pass, and Sabine 

 Pass) are analyzed to determine the hydraulics of the inlet-bay systems. The 

 effects of the hydraulics and other factors on inlet stability are also 

 examined. Variability in mean tidal ranges and water levels occurs on 

 several time scales. Significant increases in both range and level will 

 occur through 1986, when maximum values may cause inundation of areas which 

 • (continued) 



M73 



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