NE-SAW-JE-WON 



in the lake history.) It is apparent that a lake corresponding 

 to Lake Arkona may have existed again for a short time when 

 the Whittlesey waters reached the former Arkona level on 

 the way down to the level of Lake Wayne. 



Early Lakes of the Superior Basin 



About this time the ice lobe in the Superior basin had re- 

 treated north of the drainage divide, and five small lakes had 

 formed along its borders. The largest of these, glacial Lake St. 

 Louis (formerly called Lake Upham), was held between the 

 Superior ice lobe on the east and the Keewatin ice on the west 

 and covered the central drainage basin of St. Louis River, 

 south of the Mesabi Range in Minnesota. Its outlet was down 

 St. Louis River to the ice border, thence along the border to 

 Kettle River, a tributary of St. Croix River. A second small 

 lake formed in southeastern Carlton County, Minnesota, in 

 the extreme western end of the Lake Superior basin. It has 

 been named Lake Nemadji, as Nemadji River flows across its 

 bed. Its outlet was westward to Moose Lake and Kettle River 

 and to the St. Croix. In northern Douglas and Bayfield 

 counties, Wisconsin, glacial Lake Brule covered about twenty 

 square miles of the drainage valley of Bois Brule River. Its 

 outlet was southward through St. Croix River to the Mis- 

 sissippi. At first it received drainage along the ice border 

 from as far east as Baraga County, Michigan, but later the 

 border drainage expanded into two other lakes, Ashland and 

 Ontonagon. Lake Ashland covered several townships in 

 northeastern Ashland County, Wisconsin, and extended to 

 the eastern slope of Bayfield Peninsula. It was separated from 

 Lake Brule by the highlands of the Copper Range but had an 

 outlet across Bayfield Peninsula into Lake Brule. Farther 

 east, glacial Lake Ontonagon occupied much of the drainage 

 basin of Ontonagon River, south of the Copper Range in the 

 Northern Peninsula of Michigan. Its outlet was the peculiar 

 narrow channel, one-eighth to one-fourth of a mile wide and 



46 



