The dam's builders say the project would be ''the savior of the region,'' with major benefits for Irrigation, agriculture and industry, Plants grow naturally on fertile soil that is watered by rain. However, in different regions of the world where the climate is very dry for some parts of the year, the soil becomes so dry that it restricts the growth of vegetation. This problem can be overcome by irrigation, a man-made system for watering the land. As water is released through spillway into downstream and to the drier parts, but some scientists and environmental groups warn of an almost certain future disaster, in the form of an earthquake-spawned flood, if the dam is built.Opponents have marshaled an additional list of economic, social and ecological arguments against the dam
Flood control-A reservoir can be used to control the amount of water flowing in a river after heavy rain
or snow fall. The water level in the reservoir is kept low during the wetter periods of the year. When
heavy rain occurs, it is gated by the dam and held in the reservoir like a collecting tank. When the
reservoir gets too full, the floodwater can be passed downstream over a spillway.