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A NATIONAL PLAN FOR AMERICAN FORESTRY 



TABLE 1. Acreage of irrigated land, together with value of lands, buildings, and 

 machinery, and value of irrigation enterprises for irrigated farms, by States. 1930 

 Census 



WATER POWER 



Power developed from streams has long been the backbone of the 

 great manufacturing industries of New England and New York and of 

 late years has made possible the industrial rise of the Carolinas. As a 

 source of electric current for countless homes, rural and urban, and for 

 city lighting, it is important in all but a few sections of the United 

 States. Dams built to store water for power production rank among 

 the Nation's great engineering feats. That at Dreher Shoals, S.C., 

 created a reservoir with a capacity of 524 billion gallons of water. 

 The Wilson Dam at Muscle Shoals, Ala., cost the United States 

 $51,000,000 to build; the recently completed Conowingo Dam in 

 Maryland cost $52,000,000 and has an installed capacity of 378,000 

 horsepower. Practically every State in the Union utilizes power from 

 its streams, and the 26 States fisted in table 2, scattered from Maine to 

 California, have each developed over 100,000 horsepower. 



TABLE 2. States developing more than 100,000 horsepower from stream flow 



