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NEW YORK STATE MUSEUM 



at the present time there is, on the basis of 75 per cent efficiency , 

 fully 20,000 horsepower in use when there is water enough to 

 supply it. In some rears, however, there is a deficiency of power 

 for several months, and in extreme low water the total power of 

 the river does not exceed an average of about 4700 or 4800 gross 

 horsepower. On 75 per cent efficiency the total horsepower of 

 Genesee river in extreme low water does not exceed 8000 to 3800 

 net horsepower. 



In addition to the water power in use at Rochester, there is a 

 considerable amount of steam power. From a canvass made in 

 1900 it appears that there were at that time engines set capable 

 of producing over 15,000 horsepower. Since 1900 extensions have 

 been made of the Rochester Gas & Electric Company's plant 

 and of the Citizens Light & Power Company's plant to the 

 extent of 5000 or 0000 horsepower, so that there is, in 1904, over 

 20,000 horsepower from steam in use at Rochester. These figures 

 do not include auxiliary engines in use in mills propelled by 

 water power, but which, from lack of water, necessarily rely on 

 the engines in some years for several months. It is an interesting 

 circumstance that the water power manufacturing district of 

 Rochester, while situated on the brink of the gorge 1 below the 

 Upper Genesee falls, has a chimney attached to every mill, and 

 the appearance, in times of low water, is that of steam power 

 rather than of water. Tf the auxiliary engines are included there 

 were over 30,000 horse power of steam at Rochester in 1904. 



Oswego river. This stream, with a total catchment area at its 

 mouth of 5002 square miles, flows into Lake Ontario at the city 

 of Oswego. It is formed by the junction of Oneida and Seneca 

 rivers at Three Rivers Toint. about twenty-two miles southerly 

 from its month. Its main tributary, Seneca river, with a catch- 

 ment area of 3433 square miles, enters from the west at this point, 

 while the Oneida river enters from (lie easl. 



Seneca river. Seneca river rises in the highlands in the south 

 pari of the State, the main stream (lowing north through Cayuga 

 lake, while its tributaries flow north through Canandaigua, Kenka, 



