Period (hr) 



20.0 3.0 



1.4 1.0 0.7 0.-5 



0.4 0.3 





1 1 



III 1 



1.44 



1 1 

 Lake Michigan 





1.8 





Pentwoter Lake 



o 



c 

 o 



o 

 > 







5.3 



1 



1 



I.I 







Jw 



1 



\ M II 0.65 



^. jv_ y\.y\L. 1 



0.38 0.73 1.08 1.43 1.78 2.13 2.48 2.84 3.19 3.54 

 Frequency (c/hr) 



- 0.1 - 



Lake Michigan 



Figure 20. Saii5)le Pentwater and Lake Michigan water levels and spectra. 



50 



