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for a reach with low foredunes to 4.5 meters per year along a reach with a 

 high sandy bluff. The greatest amount of recession resulted from a signifi- 

 cant storm occurring 16 to 18 March 1973. 



Simple regression analysis of the data from both lake level and storm 

 parameters identified storms as the primary cause of recession. However, 

 the data set was too small and at such a unique point in the long-term lake 

 level cycle <the crest of a rising peak) to quantify the effect of lake level. 



The effect of a 5 79-meter-long seawall constructed during the study is 

 discussed; the volume of material eroded downdrift of the wall nearly equaled 

 the amount of material removed from the sediment supply by the seawall. 



The procedures used in analyzing the air photos and their accuracy are 

 described in an Appendix. Guidance is also given for determining the number 

 of measurement points needed per distance along the shore depending on the 

 desired accuracy of the bluff recession rates. 



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