72 



CLASSIFICATION OF DEVELOPMENTS 



of these should be of the same elevation as the crest of the main 

 spillway. 



MEDIUM AND HIGH-HEAD DEVELPMENTS 



To this class belong those plants which consist of a diversion 

 dam with an intake at the head waters from where the flow is led 



through tunnels, open canals or flumes to a forebay pond. This 

 is usually located on the hillside above the power-house and pipe 

 lines carry the water from the same to the turbines. In other 



