HYDROLOGY OF NEW YORK 



639 



(level opnient of Hudson river water-powers to far beyond the 

 low-water flow of the stream. 



Without going into an elaborate discussion at this time, it 

 is considered that under existing conditions to substantially 

 divert the entire flow of Schroon river would be fairly equivalent 

 to taking from 500 to 600 cubic feet per second from all water- 

 powers on the Hudson river from the George West paper mill at 

 Hadley to Troy. This does not mean that 600 cubic feet per sec- 

 ond would be taken away in the low-water months, but that for 

 an average of all years the runoff of Schroon catchment area is 

 equivalent to about 500 to 600 cubic feet continuously when 

 applied to Hudson river waterpowers. As a provisional figure, 

 accurate enough for present purposes, we may use 550 cubic feet 

 per second. The following tabulation shows in column (4) the 

 net power at 75 per cent efficiency of 550 cubic feet per second 

 of water on the stated heads : 



Designation of Dam 



Working- 

 head on 

 wheels 



Approximate 

 net horsepower 

 actually devel- 

 oped in 1899 



Net power at 

 75 per cent ef- 

 ficiency of 550 

 cubic feet per 

 second 



Difference 

 of columns 

 (3) and (4) 



(1) 



(2) 



(3) 



(4) 



will 



George West, Hadley. . . . 



18 



1,350 



845 



505 



Palmer's Falls 



83 



14. 500 



3,897 



10, 603 





10 to 12 



1,450 



515 



935 



Glens Falls 



16 to 38 



7,931 



1,784 



6,147 



Sandy Hill 



Baker's Falls 



12 



1,293 



564 



729 



58 



3,500 



2,724 



776 



Fort Edward 



18 



6,393 



845 



5,548 



Fort Miller 



10 



1,485 



469 



1,016 



Saratoga dam 



*18 



3,130 



845 



2,285 



Stillwater 



6 



514 



282 



232 



Mechanicville 



16 



3,355 



751 



2,604 



Hudson River Power Co . 



18 



3,000 



845 



2,155 



Troy 



7 



1,345 



329 



1,016 



Total 



314 



49, 246 



14, 695 



34, 551 



*The head at the Thomson Pulp and Paper Company's mill is 18 feet; at the 

 Thomson and Dix sawmill it is from 8 to 10 feet. 



The foregoing tabulation shows that on the assumed basis 

 of 550 cubic feet per second the total decrease in waterpower 

 would be 14,695 net horsepower, amounting to nearly 30 per 

 cent of the whole. 



Let us now examine rapidly as to the approximate value of 

 Hudson river waterpower. 



