454 C. R. DPYER — FINGER LAKE REGION OF WESTERN NEW YORK 



plate 39). The valley is slightly curved, so that it opens into the east 

 side of Hemlock valley at both ends. At the south end the floor of 

 Canadice valley is 300 feet above the floor of Hemlock, and at the north 

 end 160 feet. At both ends the floor is very thinly covered with drift. 

 Canadice valley therefore bears to Hemlock valley the relation of a 

 hanging valley at both ends. 



Canadice outlet flows northward over a drift bed 2 miles with a fall of 

 40 feet ; thence through a gorge cut in shale and over rapids, which fall 

 60 feet in one-eighth of a mile, to the Hemlock valley at the foot of the 

 lake, where it has built a broad alluvial fan. 



Honeoye Valley 



The central position, length, and low level of the Honeoye valley in- 

 dicate that it was made by an important pre-Glacial stream of the region.. 

 From the drift dam at its lower end it extends southward, with a gentle 

 curve to the southeast in its upper part, 17 miles, to the point where it 

 opens into the west side of Canandaigua valley, above Naples. In the 

 lower two-thirds the flat floor varies in width from three-fourths to 1 mile, 

 and is partly covered by the shallow and somewhat irregular Honeoye 

 lake, nowhere more than 30 feet in depth. Its surface is 800 feet above 

 tide. In the lower third the valley slopes rise 700 to 800 feet in a mile and 

 a half, while farther south the walls increase in steepness and height to 

 1,200 feet within less than one mile. This is the steepest slope of equal 

 height observed in the region. The upper third is narrow and choked 

 with morainal deposits. The swampy col at its head is 1,150 feet above 

 tide, while on either side the crest of the plateau reaches levels above 

 2,000 feet (figure 1, plate 38). Honeoye outlet flows northward through 

 heavy drift deposits to the Rush-Victor glacial drainage channel, which 

 it follows westward to the Genesee. 



Bristol Valley 



Bristol valley lies 6 miles east of Honeoye and parallel with its lower 

 portion. It is 10 miles long, and its width varies from one-fourth to 

 three-fourths of a mile. The floor rises from 760 feet above tide at the 

 north end to 1,080 feet at the south. The walls are steep throughout 

 and their height increases from 400 feet at the lower end to more than 

 1,000 feet at the upper. At South Bristol, Gannett hill, one of the highest 

 summits in western New York, 2,256 feet above tide, stands directly 

 athwart the valley which divides around it. The southeastern fork is a 

 narrow moraine-choked pass, which leads over a col at 1,300 feet to 

 Bristol Springs, where it opens into the west side of Canandaigua valley. 

 A large delta lies on the slope below the notch. The southwestern fork 



