HYDROLOGY OF NEW YORK 



461. 



Floods in Beaver Dam creek. This stream is reported as having 

 given (date uncertain) a flood-flow as measured near Altmar of 

 2300 cubic feet per second (catchment, 21 square miles), or at the 

 rate of 111 cubic feet per second per square mile. 



Floods in Salmon river, west. This stream has a catchment 

 area of 190.5 square miles above Henderson's mill, of which 10 to 

 20 square miles are flats, the balance of the area having rather 

 sharp slopes. The soil is sandy. The maximum flood is reported 

 as occurring in the summer of 1888 and was due to heavy summer 

 rains. The figures are 5670 cubic feet per second, or at the rate 

 of 30 cubic feet per second per square mile. The ordinary floods 

 do not exceed about 20 cubic feet per second per square mile. The 

 upper part of the catchment is mostly primeval forest. 



Data from flood hights were also obtained at Altmar, three 

 miles below Henderson's mill, as follows : Maximum, 6100 cubic 

 feet per second (catchment 221 square miles), or at the rate of 

 28 cubic feet per second per square mile. 



Floods in Trout brook. This stream is reported as having 

 given a flood-flow at Centerville (date uncertain), of 1166 cubic- 

 feet per second (catchment, 23 square miles), or at the rate of 51 

 cubic feet per second per square mile. 



Floods in Skinner creek. This stream is reported as having 

 given in the summer of 1891 a flood-flow at Mansville of 790 cubic 

 feet per second (catchment, 6 square miles), or at the rate of from 

 125 to 130 cubic feet per second per square mile. 



Floods in south branch of Sandy creek. In December, 1898, 

 this stream gave a flood-flow at Adams of 3840 cubic feet per 

 second (catchment, 110 square miles), or at the rate of 35 cubic 

 feet per second per square mile. At Allandale a flood-flow is 

 reported in 1890 or 1891 of 6000 cubic feet per second (catchment, 

 68 square miles), or at the rate of 88 cubic feet per second per 

 square mile. Ordinary flood-flows in this stream average perhaps 

 35 cubic feet per second per square mile. 



Floods in north branch of Sandy creek. A flood-flow was meas- 

 ured in this stream at Adams in the winter of 1897 of 7410 cubic 

 feet per second. The catchment area is the same as that of the , 

 south branch at this place, or 110 square miles. Hence, the flow 

 was at the rate of 67 cubic feet per second per square mile. Ordi- 



