124 THE GEOLOGY OF MINNESOTA. 



[Elevations. 



wan counties, under the influence of the Cottonwood and Watonwan 

 rivers ; enters Blue Earth county where it is in the same way modified by 

 the Blue Earth river and its tributaries, and barely enters the north side of 

 Faribault county. It passes through Le Sueur and Scott counties east of 

 their centers, and nearly reaches St. Paul, but in the elevated parts of 

 Dakota county it is suddenly deflected southward, and maintains a very 

 crooked course among the bluffs of Goodhue and the southeastern counties, 

 leaving the state near the summits of the bluffs of the Mississippi in 

 Houston county. In the northeastern part of the state this contour-line 

 includes a small part of the St. Louis valley and a narrow strip along 

 the shore of lake Superior as far as the hills of Grand Portage. 



ELEVATION OF LAKES ABOVE TIDE-WATER. 



Feet. 



Lake of the Woods, 1025 



Lake Saganaga, 1518 



Vermilion lake, - - 1511 



Rainy lake, 1150 



Red lake, - 1140 



Itasca lake, 1500 



Cass lake, - 1300 



Winnibigoshish lake, 1290 



Leech lake, - 1292 



Mille Lacs, 1246 



Otter Tail lake, 1325 



Lake Whipple, - 1134 



Lake Traverse, 970 



Big Stone lake, 962 



Lake Minnetonka, 922 



Swan lake, (Nicollet Co.) 970 



Heron lake, (Jackson Co.) - - 1403 



Lake Benton, (Lincoln Co.) 1754 



Lake Shetek, 1475 



Lake Pepin, - - 664 



