^ 177.5 r— 



E 



S 1 77.0 — 



176.5 



0.5 I— 



e 



E 



a> 



.!::; 0.4 



CO 



0.3 



0.2 



Foreshore 



Backshore 



100 



— 



90 





80 



tJ^ 



70 



jr 



60 



— 



50 



— 



40 



— 



30 



— 



20 



b^ 



10 

 



Ft*h, 



Sand, Backshore 



Sand, Foreshore 



Gravel, Foreshore 



Silt, Backshore 

 / Gravel, Backshore 



Oct. 



Nov. Dec. Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 

 ( mo) 



Figure 18. Monthly variation in average median sand size 

 and sample content for the 17 eastern Lake 

 Michigan profile lines, 1973-74. 



35 



