NEW YORK STATE MUSEUM 



be located just above the mouth, at which point a conduit of 

 77o cubic feet per second capacity would begin. This diversion 

 weir would be sixteen miles above Hartley, but it is considered 

 that the additional cost of extending the conduit this distance 

 would be compensated for by the keeping of pure Schroon river 

 water entirely separate from balance of Hudson river water. 



In proposing such separation it is not intended to imply that 

 Hudson river water at Hartley is not suited! for a public supply. 

 In any case upper Hudson water is very pure, but due to relatively 

 somewhat more extensive swamp areas to north of mouth of 

 ►Schroon river, Hudson river water at Hartley, as a whole, is not 

 equal to that of Schroon river. The purifying effect of wind and 

 sunlight on the extended water areas of Schroon, Brant and Para- 

 dox lakes is taken into account in reaching this conclusion. 



Another important reason for extending conduit to diversion 

 weir just above mouth of Schroon river may bo found in consider- 

 ing that mud] the cheapest way to reimburse waterpower owners 

 on Hudson river for diversion of 775 cubic feet per second will be 

 by constructing compensation reservoirs. Some of these would 

 be located on Sacandaga river, which flows into Hudson river at 

 Had ley. but nevertheless several would l>e on main North river 

 above Thurman. If proposed additional water supply of Greater 

 New York were taken at Hartley, then all compensating reservoirs 

 should be thoroughly cleared and stripped, the same as is pro- 

 posed for SchroOD valley reservoir. Kven after completion of 

 such extensive work, the conditions at several reservoir sites to 

 north of Thin-man are not such as to yield an ideal water without 

 filtration. There ar/; extensive murk areas which now discolor the 

 water and taint it with an offensive odor. Filtration would, of 

 course, make any of these waters ideal, and probably for a thor- 

 ough study of the project in all of its phases estimates should be 

 worked out showing approximate cost of taking 775 cubic feet 

 per second at Hadley, with all stripping of reservoirs omitted, 

 but including the cost of a filtration plant capable of handling 775 

 cubic feet per second. As regards quality of the municipal 

 supply, such treatment would place this project essentially on a 

 par with the Vyrnwy supply for Liverpool, where the water of a 

 sparsely populated mountainous area is filtered, largely to remove 

 vegetable discoloration. 



