The diagram illustrates the phases and apparatus of producing electricity by a hydroelectric dam.
Overall, it is apparent from the chart that there are a number if stages in this man-made process, commencing with the reservoir and culminating in generating electricity.
The process initiates with the water being collected in the reservoir. The water behind the dam passes through the intake and is funneled through a narrow water channel, the pen stock. The water channel us a narrow passage which is designed to add speed in the flow of the water and slopes downwards.
In the subsequent stages, the flow of water rotates the turbine. Then, the generator which is connected to the turbine, produces the electricity The generator is situated on the top of the generator, inside the powerhouse. The generator electricity is sent via long distance power lines to where it is needed. 
The diagram illustrates the phases and apparatus of producing electricity by a hydroelectric dam.
 Overall
, it is apparent from the chart that there are a number if stages in this  
man
-made process, commencing with the reservoir and culminating in generating electricity.
The process initiates with the  
water
  being collected
 in the reservoir. The  
water
 behind the dam passes through the intake and  
is funneled
 through a narrow  
water
 channel, the pen stock.  
The
  water
 channel us a narrow passage which  
is designed
 to  
add
 speed in the flow of the  
water
 and slopes downwards.
In the subsequent stages, the flow of  
water
 rotates the turbine. Then, the generator which  
is connected
 to the turbine, produces the electricity The generator  
is situated
 on the top of the generator, inside the powerhouse. The generator electricity is  
sent
 via long distance power lines to where it  
is needed
.