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READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



CETA 81-4 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE fand Sub(i(/e; 



PREDICTING ADJUSTMENTS IN SHORE AND 

 OFFSHORE SAND PROFILES ON THE GREAT LAKES 



5. TYPE OF REPORT & PERIOD COVERED 



Coastal Engineering 

 Technical Aid 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfs; 



Edward B. Hands 



8. CONTRACT OR GRANT NUMBERfs; 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CEREN-GE) 



Kingman Building, Fort Belvoir, Virginia 22060 



D31667 



11. 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 



25 



14. MONITORING AGENCY NAME h ADDRESS(ll different from Controtllne Office) 



15. SECURITY CLASS, (of tllla report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (of this Report) 



Approved for public release; distribution unlimited. 



17. DISTRIBUTION STATEMENT (of the abstract entered In Block 20, If different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Co 



saary and Identify by block number) 



Beach profile adjustments 



Great Lakes 



Lake level changes 



Lake Michigan 

 Offshore bathymetry 



20. ABSTRACT (Continue on reverse aide If neceaaary and identify by block i 



nber) 



This report summarize'! si prcceHurc for calculotlng the ultimate advance or ratreat of the 

 beach profile in response to a semipermanent change In water level elevation. The method, 

 applicable to sandy shores throughout the Great lakes, Is Illustrated by two examples. Hands 

 (1980) describes the development of the procedure. A strictly empirical correlation useful 

 for estimating shore retreat on a 1- to 5-year basis Is discussed In Hands (1979). The 

 present procedure couples field measurements with a model of how the profile ultimately 

 reestablishes equilibrium with a new water level elevation. The former procedure would 

 generally underestimate this longer term change. 



DD ,^5 



1473 



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