Answer:
The alterations to which we refer have occurred because the reservoir replaced the natural rhythm of violent summer avenues with a gentle daily alternation of ebb and flow dictated by the demand for electric energy from cities that are many kilometers away. The dam, therefore, eliminated the seasonal variation of the flow and ended with the huge annual floods that rumbled through the canyon.
Step-by-step explanation:
i think this is somewhat of answer i hope it helps tho