By removing the dam catchment and irrigation dam which it most benefit and flood protection, excellent as well as the production of electricity for use can be put to work.
By trapping them in a dam and weir. It is the most useful and flood protection was pretty good. It can also be used to produce electricity to run well.
By the storage in dams and weirs. Which is to the greatest advantage and prevent the flood was excellent. As well as can also produce electricity to operate.