CONTENTS 



Page 



CONVERSION FACTORS, U.S. CUSTOMARY TO METRIC (SI) 7 



I INTRODUCTION 9 



1. Study Area 9 



2. Available Data 11 



II ENVIRONMENTAL CHARACTERISTICS OF THE STUDY AREA 11 



1. Lake Levels 11 



2. Waves 13 



3. Storms 14 



4. Littoral Material and Transport ....... 15 



5. Ice 15 



III AIR PHOTO MEASUREMENTS . 17 



1. Data Collection 17 



2. Reach A 18 



3. Reach B 24 



4. Reach C 34 



5. Reach D 39 



6. Reach E 40 



IV COMPARISON OF RESULTS 48 



1. Comparison Between Reaches 48 



2. Previous Berrien County Erosion Studies 50 



3. Prediction of Bluff Recession 54 



4. Explanatidn of Seawall's Effect 58 



V SUMMARY 60 



1. Results 60 



2. Further Research 62 



LITERATURE CITED 63 



APPENDIX ANALYSIS PROCEDURE 67 



TABLES 



1 General characteristics of study reaches 9 



2 Summary of visual breaking wave data at Warren Dunes State Park, 



26 October 1971 to 4 December 1974 13 



3 Winter deepwater design waves for a 50-year storm 14 



4 List of aerial photos 17 



5 Summary of bluff, shore, and beach data for reach A 23 



6 Siimmary of bluff, shore, and beach data for reach B 34 



7 Summary of bluff, shore, and beach data for reach C 39 



8 Summary of bluff, shore, and beach data for reach D 43 



