Dodital

The aquatic systems are extremely important to mankind as they have various uses, including drinking water supply, irrigation, navigation, recreation, etc. These are also source of organic productivity. Water is one of the essential items needed by man, plant, animal and other living beings for their survival. Water is most precious resources on the earth covering almost 70% of the earth's surface. There are several books and research dealing with water and water related concepts, and maximum number of books and research are focused on marine water or river water. We all know that in hilly region, one of the most important sources of fresh water is ¿lakes¿. And these lakes are the main source of water in most of the river in Himalaya Region. As per their geography, location, climatic condition and approach of reach, these lakes are highly tough. Due to this fact, they are so far from any kind of pollution, and serves the mankind by fulfilling their basic need of life ¿ drinking water.