STEVENS, GLACIATION OF OVERLOOK MOUNTAIN 



265 



Although no data as to the actual stream-flow on Overlook are at han<3 T 

 a comparison of the flow of neighboring watersheds can not fail to be of 

 interest in this connection. Fig. 1 gives the comparative discharge of 

 the Schoharie, Esopus and Catskill Creeks for the different months 

 over a period of years. 7 It shows that more than one-third of the total 

 run-off of these streams occurs during two months, March and April. As 

 the curves represent an average of several years, they give but little idea 

 of the size of some of the floods. In the Schoharie, for instance, the 

 maximum daily discharge in November, 1907, was 13,100 cubic feet per 



Fig. 4. — Average discharge of the Catskill, Esopus and Schoharie Creeks for each month 



over a period of years 



Expressed in second-feet per square mile run-off. Taken as follows : Catskill Creek, 

 South Cairo, N. Y. ; for period 1901 to 1905 ; Esopus Creek, Kingston, N. Y., for period 

 1901 to 1906 ; Schoharie Creek, Prattsville, N. Y., for period 1905 to 1908. Data com- 

 piled from Summary of the Climatological Data for the United States by sections. Sec- 

 tion 104 (Weather Bureau) ; Water Supply and Irrigation Papers Nos. 166 and 202 ; 

 and the Report of the State Engineer and Surveyor, State of New "York, 1907 and 1908. 



second, while for the same month, in 1908, the maximum was onlv 268 

 cubic feet per second. 



The valley of the Saw Kill is primarily of erosive origin. Like many 



7 Records of rainfall, kept at Reservoir No. 1 of the Kingston City Water Works, in- 

 dicate that the rainfall near Overlook is much like that of the other watersheds men- 

 tioned. 



