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NEW YORK STATE MUSEUM 



drift deposits. Thus the movement of water must here have been 

 eastward in Preglacial time. Thirty-four marsh on Rock river 

 comes to within one-half of a rriile of Blue ^Mountain lake and it 

 is about 20 feet lower than the lake surface, the intervening space 

 being occupied by loose sands and gravels. It would be a simple 

 matter, by shovehng out a trench nowhere over 20 feet deep, to 

 cause Blue ^lountain and Eagle lakes to drain eastward. Years 

 ago such an attempt was actually made but stopped by law. The 



rc^aiiGiiS Oi. LTic priiicip5.i Prcgia.ci5.i strcs.ni courses to Lnosc 01 tnc present. Pre^i.s.ci3.i 

 streams show only where essentially different from those of today. The rectangular 

 area shows the position of the Blue Mountain quadrangle. 



Preglacial drainage eastward through the lake basins was more in 

 harmony with the course of the upper waters of Rock river which 

 has its sources in and around Wilson pond about 3 miles southwest 

 of Blue Motmtain lake village. 



Utowana-Raquette lake basins. That the Preglacial drainage 

 through the Utowana lake basin passed westward into the basin 



