Brother you are discussing one aspect of the dam building that is power generation.The other aspects are hereby briefly described below.In my opinion they are also equally important for for a country like BD.
Benefits of Dams
This page describes various important roles that dams play. It is geared toward general audiences that wish to learn more about the purpose of dams and what impact they have in their lives and communities.
Dams pro
vide a range of economic, environmental, and social benefits, including recreation, flood control, water supply, hydroelectric power, waste management, river navigation, and wildlife habitat.
- Recreation
Dams can provide prime recreational facilities throughout the country, Boating, skiing, camping, picnic areas, and boat launch facilities are all supported by dams.
- Flood Control
In addition to helping farmers, dams help prevent the loss of life and property caused by flooding. Flood control dams impound floodwaters and then either release them under control to the river below the dam or store or divert the water for other uses. For centuries, people have built dams to help control devastating floods.
- Water Storage (Fire & Farm Ponds)
Dams create reservoirs throughout the country that supply water for many uses, including industrial, municipal, and agricultural.
- Irrigation
Cropland can be irrigated using water stored behind dams. Thousands of jobs are tied to producing crops grown with irrigated water.
- Mine Tailings
The mining and processing of coal and other vital minerals can be done while protecting the environment.
- Electrical Generation
Hydro power is considered clean because it does not contribute to global warming, air pollution, acid rain, or ozone depletion.
- Debris Control
In some instances, dams provide enhanced environmental protection, such as the retention of hazardous materials and detrimental sedimentation.
- Navigation
Dams and locks provide for a stable system of inland river transportation throughout the heartland of the Nation.