THE HISTORY OF DEVILS LAKE, WISCONSIN 



367 



From the 1,020 foot level (60 feet above the present lake) the 

 lake surface probably was brought down rapidly by the lowering of 

 its outlet. The stream flowing north across the moraine cut its 



Fig. 4. — A map showing the shape and size of Devils Lake during the occupancy 

 of the ice. The shaded area shows the lake surface. The arrow near the left margin 

 designates the outlet. Scale: if inches equal 1 mile. 



way downward in the glacial till, removing the fine material, but 

 leaving the bowlders on its bed, lowering the lake surface from 1,020 

 to about 970 feet. 



