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REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



MR 81-2 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



COASTAL CHANGES, EASTERN LAKE MICHIGAN, 1970-74 



5. TYPE OF REPORT a PERIOD COVERED 



Miscellaneous Report 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfsJ 



William A. Birkemeier 



8. CONTRACT OR GRANT NUMBERfsJ 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-FR) 



Kingman Building, Fort Belvoir, Virginia 22060 



D31194 



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 



14. MONITORING AGENCY NAME 8 ADDRESSfy/ dllterent horn Controlling Office) 



IS. SECURITY CLASS, (of thia report) 



UNCLASSIFIED 



16. DISTRIBUTION ST ATEMENT fo/ (h/s ReporO 



Approved for public release, distribution unlimited. 



17. DISTRIBUTION STATEMENT (of the abs 



itered In Block 20, If different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue ■ 



aary and identify by block i 



Beach profile changes 

 Beach sediments 

 Bluff erosion 



Lake levels 

 Lake Michigan 



20. ABSTRACT (Continue . 



everja aide If necaaaary and Identify by block number) 



Bluff recession and volumetric losses at 17 profile lines along the 

 eastern shore of Lake Michigan were measured monthly from August 1970 to 

 December 1974. Average rate of bluff recession for the period equaled 2.5 

 meters per year per profile line with an average loss of 4.2 meters per year 

 on the most severely eroded line. Bluff recession tended to increase with 

 lake level but the seasonal peak in recession coincided with the storm period 



(continued) 



DD ,^5 



EDrTlOH OF t NOV 65 IS OBSOLETE 



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