156 Ilaimnan — Glacial Modification of Drainage 



ley. So . . . this creek has, in places, cut through 

 the drift to find itself superimposed upon the rock wall 

 of part of the old valley. Where this is the case we have 

 a rock walled gorge, often with falls and rapids, while 

 the other parts of the valley are broad and drift walled 

 . . ." More recent are the studies which Firmer (1) 

 and Rich and Firmer (5) have made, developing further 

 the relationships of the present stream course to the 

 interglacial valleys. , 



The first, and only mention, however, of the glacial 

 diversion of the course of upper Sixmile Creek is made 

 by Tarr (2) who, in the Watkins Glen-Catatonk Folio, 

 p. 25, observes: "Gorges of a second type, with asso- 

 ciated waterfalls, are found where drift deposits have 

 turned the stream to one side of the preglacial valley and 

 forced it to flow across one side of the valley. This con- 

 dition is illustrated at Brookton, about three miles to the 

 west of Slaterville Springs, where a great delta deposit 

 has pushed the stream over to the south side of the val- 

 ley, forming a fall that is utilized for power, and north 

 of Slaterville Springs (see fig. 2), where the creek is 

 pushed over against its east wall by a massive drift 

 deposit, associated in origin with a stand of the ice in 

 this vicinity. Here a deep gorge has been cut." This 

 reference is, however, to East Sixmile Creek (C, fig. 2). 

 No writer has, heretofore, noted the diversion of West 

 Sixmile Creek (H, fig. 2) and the gorge which has 

 resulted therefrom. 



Drainage of the Area Under Discussion. 



In the following description the reader is referred to 

 the topographic key map, fig. 2, on which all streams and 

 other localities mentioned in the text have been labelled, 

 and also to the glacial deposits map, fig. 3. 



Upper Sixmile Creek has been limited, for convenience, 

 to that portion of the stream above its bend to the north- 

 east just east of the village of Slaterville Springs (A, 

 fig. 2). From thence the creek continues for two miles 

 north-east, then divides. The western branch is called 

 West Sixmile (D, fig. 2) and the Eastern branch, East 

 Sixmile (C, fig. 2). Both branches are roughly five miles 

 in length. 



West Sixmile takes its origin in a small upland marsh, 

 trends southeast, and after receiving the waters of four 

 tributaries is turned abruptly, when about three miles 



