This is an idea of learning and understanding the effects and results of constructing a Dam in the path of any existing natural water resource. This format already consists of most of the possible harms created by a man-made structure, we are focusing on the harms mostly becomes the benefits are already very well known. Further renowned researchers like Bhaise Sanjay Devides, Sir Soderbaum, Sir Snow, Sir Michael Webber, Sir Snow etc. did magnificent jobs in considering drawbacks and partly made efforts for the betterment of the rehabilitated society. Their hard work for making the lives of the rehabilitated societies full of harmony again was the main reason why they have a special mention and respect. Our topic further has the following important points. The EA process found the major benefits of the project and the sponsors to be followed: ·EIA reduces the actual cost and time of project implementation so as to have a better efficiency. ·EIA methods can make cost-saving modifications in the project design thus they can help in the project designing of the project as to have a better clearance of the untitled work. ·EIA increases project acceptance and thus, guides in a proper manner for the future better understanding of the project. ·The processes making should not harm the surrounding area and environment because of this process is avoiding the variation between lows and regulation as well as its avoid the impact. ·EIA improves project performance so that the further carried out work is to be done on the past basis or the assumptions which are to be taken in proper order so as to have a better evaluation work. EIA avoids treatment/clean costs which in turn helps us to make the project environmentally clean.