ANCIENT WATER LEVELS OP . CHAMPLAIN-HUDSON VALLEYS 171 



Shore lines at Harkness. At Harkness on the hill east of the 

 railroad station there is a beach ridge at about 500 feet (aneroid). 

 This hill has a northeast exposure. A small stream entering the 

 valley just east of the station has a sand delta at 510 feet. Above 

 this delta on the hillside there is a faint shore line at 550 feet. 

 Going up a gully excavated in gravel and sand and coarse cobbly 

 drift, one comes to the top of an earlier deposit of the stream at 

 about 650 feet. Above this level to 675 feet is a till ridge with 

 kamelike contours. 



Below Harkness on the east of the railroad and at the foot of 

 Hallock hill a sandy ridge extends for 2 or 3 miles at about 380 

 feet elevation. The materials appear to have been wind blown. 



Deltas of the Saranac. There is a heavy development of deltas 

 along the course of the Saranac river specially between Platts- 

 burg and Cadyville. Unfortunately this district immediately west 

 of Plattsburg has not yet been mapped topographically. 



There is a high level glacial delta just east of and below Cady- 

 ville station (732 feet) with associated kames indicating deposi- 

 tion in the presence of ice. Baldwin gives the elevation as 729 feet. 

 This corresponds with a series of sand plains in the valleys west 

 of Lake Champlain if we admit a tilting essentially parallel with 

 that of the upper marine limit. This tilted level correlates with the 

 bare rock spillway southwest of Schuylerville from near Quaker 

 Springs toward the battlefield of Saratoga. The waters in these 

 northern side valleys must have flowed along the ice margin with 

 slight fall toward the south where a lake appears to have existed 

 at least over the Fort EdAvard district. 



Below this high level delta about 40 feet is another level as yet 

 not well understood. At about 650 feet there is a large sand 

 delta which appears to be correlated with the tilted water plane 

 contemporaneous with the Coveville stage of the glacial lake which 

 covered this district. 



Again at Morrison ville station (449 feet) there is a broad plain 

 at about 450 feet above the sea which* appears to be correlated with 

 the uppermost of a crowded series of beaches which extend up to 

 540 feet at the international boundary and decline southward. It 

 was probable that at this time the waters did not discharge south- 

 ward through even the lowest of the channels near Fort Edward 



