Published Paper Details:

Water is very important natural element of mankind for drinking as well as purposes related to human life and human need. Rivers are the primary source to meet water demand for human needs as well as ecosystem function and structure. Flowing water in a river is one of the important determinants and primary driving forces that influence aquatic ecosystems and the health of the river. Increasing demand of water caused the construction large dams for agricultural purposes, drinking, industrial, flood mitigation, hydropower generation, recreational, fishery and tourist etc. Large dams can remarkably effect on the environment as a non- stabilizing factor in nature in various stages of construction, operation and end of life by stopping the flow of the river and stored water. If the environment destruction or damage will gradually rise and the objective of dam construction will be lost. In this paper, we will review the environmental impact of construction large dams on some rivers in the India and we will suggest some ways to deal with these effects and finally we will separately examine the use of several small dams instead of big dams as an important and effective option.