HYDROLOGY OF NEW YORK 



175 



feet per second, or at the rate of 11 cubic feet per second per 

 square mile. The maximum tiood hight on the Harden dam 

 at Xormanskill is stated at 1 feet. This would indicate a flood 

 discharge of 16 cubic feet per second per square mile. The maxi- 

 mum flood hight on the dam just above the highway at Kenwood 

 is staled at 8 feet, indicating a discharge of 22.0 cubic feet per 

 second per square mile. 



Floods in Schroon river. Owing to the regulating effect of 

 ►Schroon lake, serious floods are unknown in this stream. The 

 usual extreme flows are about 8000 cubic feet per second at War- 

 rensburg (catchment, 563 square miles i. or at the rate of 14 to 

 15 cubic feet per second per square mile. 



Floods in Mohawk river. Flood-flows of the Mohawk river have 

 been measured at Dunsbach Ferry, with a catchment area of 3110 

 square miles, as follows: 





, — Estimated 



Discharge — , 







Cubic feet 





Cubic feet 



per 



Date 



per second 



second per 







square mile 



March 11, 1S9S 



17,000 



13.8 



November 11, 1898 



17,000 



13.8 



November 27, 1900 



21,700 



7.2 



March 27, 1901 



36.200 



10 . 5 



April 8, 1901 



31.200 



9.1) 



April 22, 1901 



16.100 



13.1 



December 16, 1901 



52,100 



15.3 



In 1892 the Mohawk at Rexford Flats flowed at the rate of 

 78,350 cubic feet per second (catchment, 3385 square miles) , or 23 

 cubic feet per second per square mile. On February 11. 1900, the 

 flow here was 15.000 cubic feet per second, or at the rate of 11 

 cubic feet per second per square mile. Ordinary floods at this 

 place are from 30.000 to 35.000 cubic feet per second. 



The maximum discharge of the river at Rocky Rift dam was in 

 March, 1901. and is estimated to have been 23.150 cubic feet per 

 second (catchment, 1337 square miles), or at the rate of 17 cubic 

 feet per second per square mile. The flow has been calculated 

 from Cornell University experiments. 



Tn 1890 the flow at Little Falls is stated to have been about 

 22.000 cubic feet per second (catchment. 1306 square miles), or 



