REPORT DOCUMENTATION PAGE 



Form Approved 

 OMB No. 0704-0188 



Public reporting burden for this collection of Information Is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining 

 the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions 

 for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports. 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and to the 

 Office of Management and Budget, Paperwork Reduction Project (0704-01 88), Washington, DC 20503. 



1 . AGENCY USE ONLY (Leave blank) 



2. REPORT DATE 



October 1997 



3. REPORT TYPE AND DATES COVERED 



Final report 



TITLE AND SUBTITLE 



Needs Assessment for Water-Level Gauging Along the Texas Coast for the 

 U.S. Army Engineer District, Galveston 



6. AUTHOR(S) 



Nicholas C. Kraus, Carroll I. Thurlow, Daniel J. Heilman, Anne-Lise 

 Lindquist, Mark W. Earle 



5. FUNDING NUMBERS 



7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 



U.S. Army Engineer Waterways Experiment Station, 3909 Halls Ferry Road, 

 Vicksburg, MS 39180-6199 



Conrad Blucher Institute for Surveying and Science, Texas A&M University-Corpus 

 Christi, 6300 Ocean Drive, Corpus Christi, TX 78412-5599 



PERFORMING ORGANIZATION 

 REPORT NUMBER 



Technical Report CHL-97-29 



9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 



U.S. Army Engineer District, Galveston 

 Jadwin Building, P.O. Box 1229 

 Galveston, TX 77553-1229 



10. SPONSORING/MONITORING 

 AGENCY REPORT NUMBER 



11. SUPPLEMENTARY NOTES 



Available from National Technical Information Service, 5285 Port Royal Road, Springfield, VA 22161. 



12a. DISTRIBUTION/AVAILABILITY STATEMENT 



Approved for public release; distribution is unlimited. 



12b. DISTRIBUTION CODE 



1 3. ABSTRACT (Maximum 200 words) 



The U.S. Army Engineer District, Galveston, conducts navigation channel maintenance and operations along the Texas 

 coast from the Sabine River on the north to the Brownsville Ship Channel on the south. The Galveston District has identified 

 a need to have both real-time and recorded water-level data in order to conduct navigation channel maintenance and 

 operation, coastal engineering, and environmental regulatory functions in an economical and accurate way. This report 

 identifies general and specific needs for water-level information, and gives recommendations for obtaining such information. 

 Communications alternatives for supplying real-time, voice-reported, and archived data to the Galveston District are 

 discussed. 



14. SUBJECT TERMS 



Navigation channel maintenance 



Tide gauges 



Tides 



U.S. Army Engineer District, Galveston 

 Water level 



15. NUMBER OF PAGES 



79 



16. PRICE CODE 



17. SECURITY CLASSIFICATION 

 OF REPORT 



UNCLASSIFIED 



18. SECURITY CLASSIFICATION 

 OF THIS PAGE 



UNCLASSIFIED 



19. SECURITY CLASSIFICATION 

 OF ABSTRACT 



20. LIMITATION OF ABSTRACT 



NSN 7540-01-280-5500 



Standard Form 298 (Rev. 2-89) 



Prescribed by ANSI Std. Z39-18 

 298-102 



