STATIONS NEAR ASHTABULA 

 1 2 



OHIO. 

 3 



750 M.- 



-270 M.- 



«0M.- 



-5.000 M- 



Figuie 39. --Horizontal variation in chemical values of the surface waters 

 near Ashtabula, Ohio. The scale from station No. 1 in 

 Ashtabula River outward to station 06. 37 is plotted as the 

 logarithm of the distance in meters. 



96 



