POWER FROM INLAND WATERWAYS 23 



only treatment that now appears feasible for these streams is the 

 construction of levee systems. For the remaining two-thirds of 

 the United States, investigations made indicate that from 55 to 

 60 per cent of the flood waters can be saved by the utilization of 

 maximum storage capacity. Although the cost of such construc- 

 tion would be enormous in the aggregate, it is apparent that the 

 saving that would accrue for relief from flood damages alone would 

 soon return the entire investment. 



In addition, the construction of storage reservoirs will natur- 

 ally have a very great bearing on the possibilities of power devel- 

 opments. The stream can l>e regulated and the flows equalized 

 by storing the water dining the wet season and using the same to 

 increase the volume of the stream through the dry season. This 

 means a consequent increase in the power value of the stream due 

 to augmenting the low-water flow. It is thus estimated that in 

 this manner the economical water-power possibilities of the United 

 States would be increased to about 60 million horse-power. 



Striking examples of what may be accomplished by an efficient 

 regulation of navigable rivers is shown at Keokuk on the Mississippi 

 River, and at Kale's Bar on the Tennessee River. In both cases 

 Federal grants were given to private companies for constructing 

 a dam across a large navigable river, the result being a com- 

 bined river improvement and a power development of immense 

 size. 



The Sanitary District's Canal, at Chicago, with its 50,000 H.P. 

 power development at Lockport, 111., clearly illustrates the great 

 possibilities in connection with canals. This subject has also been 

 given careful consideration in connection with the Barge Canal in 

 the State of New York, and the principal water powers created 

 by this canal are given in Table V. From this it is seen that the 

 increased power possibilities attributable to it will amount to 

 about 40,000 H.P. 



The possibilities of power developments in connection with 

 water supply systems is, on the other hand, illustrated by the 

 Los Angeles Aqueduct. This has a length of about 250 miles and 

 a capacity of 258 million gallons of water every twenty-four hours. 

 The flow of this water will be utilized for generating a total of 

 90,000 Kw. of electric energy at a number of power stations along 

 the route, from where it will be transmitted to Los Angeles. It is 

 estimated that the sale of this energy will take care of all the bonds 



