68 



GEOLOGICAL SURVEY OP ALABAMA. 



Fig. 11. Discharge of Coosa River at Riverside, Ala., 1899. 



Minimum monthly discharge of Coosa River at Riverside, Ala., with 

 corresponding net horsepower per foot of fall on a water wheel 

 realizing 80 per cent of theoretical poiver. 



[Drainage area, 6,850 square miles.] 



NOTE. To find the minimum net horse power available at a shoal 

 on this stream, near this station, for any month, multiply the tota 1 

 fall of the shoal by the "Net H. P. per foot of fall" in this table ) 

 that month. 



