Water is a strategic resource and the Rain is the main source of fresh water. Rainfall is seasonal and is not evenly distributed. So, we face the fury of floods and droughts. Every increasing human population has escalated the consumption of water. This has created a tremendous pressure over water system. Underground water table is also depleting alarming due to excessive tapping in the dry seasons. We are entering an era in which availability of freshwater is becoming scarce. If this trend is continued, we will land in acute shortage of water.