HYDROLOGY OF tfEW YORK 



853 



not appear to be fed copiously by springs. It was proposed by a 

 private corporation in Rochester to supply this pond from Iron- 

 dequoit creek and certain springs in the vicinity, thus treating it 

 as a storage basin from which a large quantity of water could be 

 pumped daily into the Mount Hope reservoir. It was, however, cer- 

 tain that the expense of obtaining a temporary supply from this 

 source would be large, a preliminary estimate of the cost of 

 works capable of delivering 2,000,000 gallons per day, being about 

 |180,000. This plan was therefore not adopted. 



Irondcquoit hay. This body of water is 390 feet below the Mount 

 Hope reservoir and the distance from said reservoir to the nearest 

 point where an intake could be located in deep water, free from 

 extensive growths of flags, etc. is about 6.25 miles. The unsani- 

 tary condition of the water, resulting from the presence of a vast 

 quantity of aquatic vegetation as well as the discharge of sewage 

 from populous districts on the east side of the city, rendered this 

 source undesirable. 



Lake Ontario. By constructing a pumping station on the lake 

 shore at a point about one mile west of the mouth of the Genesee 

 river and a force main about eight miles long, water from Lake 

 Ontario could have been temporarily delivered into the 16-inch 

 distribution main at the intersection of Jay and Child streets, 

 and thence throughout the northwestern portion of Rochester. 

 The water would of course have had to be delivered at a pressure 

 somewhat greater than that which is due to the elevation of the 

 Mount Hope reservoir, so that the total lift, including friction, 

 would have amounted to about 440 feet, the lake being 390 feet 

 below said reservoir. Owing to the prevalence of westerly winds 

 the intake would necessarily have been west of the river in order 

 to avoid pumping the polluted water of the latter. During an 

 easterly wind the operation of the pumps would be suspended 

 and the whole supply taken from the reservoirs, since the influ- 

 ence of the river, under such conditions, has been traced as far 

 west as Manitou Beach, about eight miles from the mouth of the 

 river. The proposed nearest site for the intake of a temporary 

 supply was therefore entirely unsuitable for permanent use, and 

 would have to have been abandoned after a permanent additional 

 supply had been obtained from some other locality. The cost of 



