Answer:
Step-by-step explanation:
Rivers are flowing water body . So it is used for transportation. Rivers , canals etc are very cheap means of transport . They are environment friendly too because we do not have to burn fuel in carrying luggage through rivers. By damming rivers , we are actually decreasing means of transport. Rivers are blocked due to deposit of eroded soil which decreases flow of water . So our waterways are destroyed.
reservoirs are stagnant water bodies . They play an important role in the process of evaporation which stimulates rainfall . The larger the reservoir , the larger the process of evaporation .