Bihar covers a total area of 94,163 km2 (36,357 sq mi), with an average elevation above sea level of 173 feet (53 m). It is land locked by Nepal in the north, Jharkhand in the south West Bengal in the east and Uttar Pradesh to the west.It has three parts on basis of physical and structural conditions- Southern Plateau, Shivalik Region and Bihar's Gangetic Plain.Bihar has notified forest area of 6,764.14 km2, which is 7.1 percent of its geographical area.Affective use of land and water is fundamental to growth and sustainable development. The concept of watershed management has evolved to ensure effective use of both natural and social capitals. Thus, the watershed development programmes include land, water, and human resources as essential components. The watershed programme is primarily a land-based programme, which is increasingly being focused on water, with its main objective being to enhance agricultural productivity.This concept led to development of Tanks/Reservoirs for increasing the production to meet the demand of ever growing populations in the country since ages.Fertile land is one of the beauties of nature, don’t pollute it.Save water and soil before it’s too late.