HYDROLOGY OF NEW YORK 



507 



0.24 cubic foot per second per square mile. There seems little 

 reason to doubt but that this stream will go as low as from 0.10 

 to 0.15 cubic foot per second per square mile. 



A measurement of Clove creek, the largest tributary of Fishkill 

 creek, was made September 24, 1902, when the discharge was 3.5 

 cubic feet per second (catchment, 20 square miles), or at the rate 

 of 0.18 cubic foot per second per square mile. 



Minimum -flow of Rondout creek. The low-water flow of this 

 stream is estimated at from 0.05 to 0.1 cubic foot per second per 

 square mile. 



Minimum flow of Wallkill river. The lowest flow thus far ob- 

 served on this stream at New Paltz is 124 cubic feet per second 

 (catchment, 736 square miles), or at the rate of 0.17 cubic foot per 

 second per square mile. This flow is from a single current meter 

 measurement on July 17, 1902. The minimum flow of this stream 

 will go as low as from 0.05 to 0.1 cubic foot per second per square 

 mile. 



Minimum flow of Esopus creel 1 . The flow of this stream at 

 Kingston on August 5, 1901, was 40 cubic feet per second (catch- 

 ment, 312 square miles), or at the rate of 0.13 cubic foot per sec- 

 ond per square mile. This stream will at times go as low as 0.05 

 cubic foot per second per square mile. In June, 1899, the mean 

 flow for the entire month was only 0.24 cubic foot per second per 

 square mile. 



Minimum flow of Gatskilt creek. The available data show that 

 this stream will in dry time run down to 0.05 cubic foot per second 

 per square mile. 



Minimum flow of the Normanskill. The lowest recorded flow of 

 this stream occurred in September, 1891, and was 4.G cubic feet 

 per second (catchment, 111 square miles), or at the rate of 0.04 

 cubic foot per second per square mile. The mean flow for the 

 entire month of September, 1891, was 8.9 cubic feet per second, 

 or at the rate of 0.07 cubic foot per second per square mile. In 

 October, 1891, the lowest flow was 4.9 cubic feet per second; in 

 August, it was 5.9 cubic feet per second, and in November of the 

 same year, it was 6.9 cubic feet per second. These figures show at 

 once that this stream is a poor water yielder, and that probably 

 the extreme minimum flow for several days will not exceed 0.02 to 

 0.03 cubic foot per second per square mile. 



