624 



NEW YORK STATE MUSEUM 



The main Hudson or North river has a total catchment area 

 above Hadley, not including Schroon river, of 1092 square miles. 

 Of this area the portions shown below may be developed to full 

 capacity in the year of minimum rainfall : 



Square 

 miles 



Thirteenth pond 14 



Chain lakes 58 



Catlin lake 25 



Lakes Bich, Harris, and Newcorab, and the Goodenow flow. 83 



Lake Henderson 18 



Lake Sanford and the Tahawus flow 67 



Boreas river and Boreas pond 45 



Cedar river 58 



Indian lake 146 



Total 514 



Schroon river has a total catchment area above its mouth of 

 570 square miles. The topography of the Schroon area is such 

 as to admit of two distinct lines of treatment — either to construct 

 one large dam at Tumblehead falls, about a mile below South 

 Horicon, or to construct a series of 16 to 18 small dams at various 

 points in the area. In either case it is possible to control sub- 

 stantially the full flow above Tumblehead falls, and the decision 

 of which is better will turn chiefly on the question of relative 

 cost, the estimate taking into account the fact that it will cost 

 much more to operate a large number of reservoirs than to operate 

 one. The following are the catchment areas of the system of 

 small reservoirs as proposed for Schroon river: 



Squa re 

 miles 



Minerva brook at Olmsteadville 43.4 



He wet t pond 2.5 



Loon lake 11 .6 



Friend lake 4.9 



Elk lake 15.9 



Clear pond 2.3 



New pond 1-7 



