STORAGE RESERVOIRS 



163 



Intakes. The intake should be located sufficiently far back 

 from the dam in order that the water may be drawn out when 

 at its lowest level. It is also preferable to provide several intake 



Ladder to Bottom of Tower 



Intake 



SECTION ON SCREEN FLOOR 



EL 430 



FIG. 86. Concrete Intake Tower. 



openings at different elevations, especially where the depth of 

 water is considerable. The upper openings should then be used 

 when the water level is highest and the others in order, as the water 

 is drawn out and the level lowered. In this manner the pressure 



