REPORT DOCUMENTATION PAGE 



Form Approved 

 OMB No. 0704-0188 



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 Ofllceof Management and Budget. Papenvorti Reduction Project (0704-0188). Washington, DC 20503. 



1 . AGENCY USE ONLY (Leave blank) 



REPORT DATE 



July 1997 



3. REPORT TYPE AND DATES COVERED 



Final report 



4. TITLE AND SUBTITLE 



Effectiveness of Beach Nourishment on Cohesive Shores, St. Joseph, 

 Lake Michigan 



6. AUTHOR(S) 



Robert B. Nairn, Peter Zuzek, Andrew Morang, Larry E. Parson 



5. FUNDING NUMBERS 



PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 



W.F. Baird & Associates, Coastal Engineers, Ltd. 



221 Lakeshore Road East, Suite 30, Oakville, Ontario, Canada L6J 1H7 



U.S. Army Engineer Waterways Experiment Station 



3909 HaUs Ferry Road, Vicksburg, MS 39180-6199 



8. PERFORMING ORGANIZATION 

 REPORT NUMBER 



Technical Report CHL-97-15 



SPONSORING/MONITORING AGENCY NAME(S) AND ADORESS(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 22 1 6 1 . 



12a. DISTRIBUTION/AVAILABILITY STATEMENT 



Approved for public release; distribution is unlimited. 



12b. DISTRIBUTION CODE 



13. ABSmACT (Maximum 200 words) 



This report describes a study of the effectiveness of beach nourishment along the cohesive shore of St. Joseph Harbor on 

 Lake Michigan. Objectives of the study were as follows: 



a. To improve understanding of the sediment transport processes for both fine-grain and coarse-grain sand coir^nents at 

 this site. 



b. To improve understanding of the relationship between movement of the cohesionless sediment (both fine- and 

 coarse-grain components) and the irreversible downcutting of the underlying glacial till (cohesive sediment) at this site. 



c. To apply the improved understanding of the sediment transport and erosion processes in developing recommendations 

 for beach nourishment at the St. Joseph site. 



d. To formulate general principles for beach nourishment of cohesive shore sites that suffer from a sediment supply deficit 

 due to the presence of an uplift Uttoral barrier. 



Data in the form of repeated beach profiles, lake bed bathymetry, and shoreline recession rates are summarized. The 



results of a series of analyses performed to develop an understanding of the evolution of the shoreline and lake bed in the 



vicinity of Sl Joseph , and the influence of the beach nourishment program on this evolution, are presented. A descriptive 



model of the historic coastal morphodynamics in the vicinity of St. Joseph is developed and presented, and this descriptive 



(Continued) 



14. SUBJECT TERMS 

 Beach nourishment 

 Coastal morphodynamics 



Sediment transport 

 SL Joseph Harbor 



15. NUMBER OF PAGES 



102 



16. PRICE CODE 



17. SECURITY CLASSIFICATION 

 OF REPORT 



UNCLASSIFIED 



18. SECURITY CLASSIFICATION 

 OF THIS PAGE 



UNCLASSIFIED 



19. SECURITY CLASSIFICATION 

 OF ABSTRACT 



20. UMITATION OF ABSTRACT 



NSN 7540-01-280-5500 



Standard Form 298 (Rev. 2-89) 

 Prescribed by ANSI Std. Z39-18 

 298-102 



