REPORT DOCUMENTATION PAGE 



Form Approved 

 OMB No. 0704-0188 



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1. AGENCY USE ONLY (Leave blank) 



2. REPORT DATE 



July 1997 



3. REPORT TYPE AND DATES COVERED 



Final report 



4. TITLE AND SUBTITLE 



Monitoring of Harbor Improvements at St. Paul Harbor, St. Paul 

 Island, Alaska 



6. AUTHOR(S) 



Robert R. Bottin, Jr., Kenneth J. Eisses 



5. FUNDING NUMBERS 



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



U.S. Army Engineer Waterways Experiment Station 

 3909 Halls Ferry Road, Vicksburg, MS 39180-6199 

 U.S. Army Engineer District, Alaska 

 P.O. Box 898, Anchorage, AK 99506-0898 



8. PERFORMING ORGANIZATION 

 REPORT NUMBER 



Technical Report 

 CHL-97-13 



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



U.S. Army Corps of Engineers 

 Washington, DC 20314-1000 



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 



13. ABSTRACT (Max/mom 200 words) ., , , ^ . , . . . », ^ i . j kt » 



In 1992, St. Paul Harbor, Alaska, was approved for mclusion m the Monitonng Completed Navigadon 



Projects Program. The objective of the monitoring plan for St. Paul Harbor was to determine if the harbor 



and its structures were performing (both functionally and structurally) as predicted by model studies used 



in the project design. Monitoring of the harbor was conducted during the period July 1993 through June 1996. 



Elements of the monitoring program included prototype wave gauging, wave hindcast study, wave runup, wave 



overtopping, bathymetric analysis, broken armor unit surveys, and photogrammetric analysis. 



Wave height data obtained inside the harbor appeared to validate a previous three-dimensional model 

 study. A videotape analysis used to obtain wave runup data along the face of the St. Paul Harbor main 

 breakwater was successful, except during periods of low visibility. Trends in wave hindcast data obtained 

 outside the harbor correlated reasonably well with runup data in a qualitative sense. Absolute values of 

 the hindcast significant wave heights, however, appeared to be substantially lower than the waves 

 experienced in the prototype based on runup values measured, overtopping observed, and local forecasts. 



Although the St. Paul Harbor main breakwater is currently functioning in an acceptable manner and 

 is in good condition structurally, armor stone continues to degrade. Continued deterioration is predicted 

 due to freeze-thaw and wet-dry cycles as well as large waves and sea ice action. Photogrammetric analysis 

 revealed most of the breakwater extension was below its design elevation. 



14. SUBJECT TERMS 



Broken armor unit survey 



Monitoring Completed Navigation Projects Program 



Photogrammetry 



St. Paul Harbor, Alaska 



Wave runup and overtopping 



15. NUMBER OF PAGES 



123 



16. PRICE CODE 



SECURITY CLASSIFICATION 

 OF REPORT 



UNCLASSIFIED 



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 



