CONTENTS 



TABLES--Continued 



Page 



9 Summary o£ bluff, shore, and beach data for reach E 47 



10 Comparison of average bluff recession and shoreline changes for all 



reaches 49 



11 Summary of bluff recession rates reported in various sources 53 



12 Reach A recession and process data used in linear regression model . . 55 



13 Longshore current measurements in reach B 59 



14 Comparison of volumeteric losses behind and adjacent to seawall. ... 59 



FIGURES 



1 Location of study reaches 10 



2 Annual average of Lake Michigan water level as recorded at 



Ludington, Michigan, from 1951 to 1974 12 



3 Monthly mean Lake Michigan water levels at Ludington, Michigan .... 12 



4 Aerial view of lakeshore ice along reach B 16 



5 Composite aerial photo of reach A taken 23 November 1974 19 



6 Severe bluff erosion at the northern end of reach A 20 



7 Rates of bluff recession and shoreline change along reach A. .... . 22 



8 Rates of bluff recession and shoreline change along reach A from 



19 November 1970 to 23 November 1974 23 



9 Composite aerial photo taken 2 3 November 1974 showing reach B with 



main sections identified 25 



10 View southward from station 13 26 



11 View southward from station 28 along the seawall 27 



12 View northward from station 42 showing the dune section north of 



the seawall 27 



13 Composite aerial photo of the northern section of reach B taken 



19 November 1970 28 



14 Rates of bluff recession and shoreline changes along reach B 29 



15 Aerial photos showing development of the downdrift cut south of the 



seawall from 16 November 1972 to 20 November 1973 31 



