PLATE 9 



CLEVELAND 



572.20 

 .10 



XA 



572.00 



.10 



v \ 



/LAKE ERIEMEAW 



AUG.28J9IO SEFT.2 



SEP 



SEPT 



" Observed -^Corrected for barometric and wind effects 



Rainfall + inflow-outflow Record missing 



Elevations of water surface, La'ke Erie, August 28-October 11, 1910. 



