**2. Why ground water recharge is necessary?**

For the purpose of utililization of water depending over the demand, the ground water is pumped out from the aquifer which leads to the depletion of it. For instance, *An Overview on Techniques Involved in Recharging Ground Water and Its Impacts DOI: http://dx.doi.org/10.5772/intechopen.105448*

**Figure 2.** *Groundwater recharge.*

due to the usage of water for the purpose of irrigating plant in agriculture sector, approximately 50 billion gallons per day is extracted from ground water table. Hence, due to the extraction of ground water as an enormous amount may lead to dry wells, poor water quality, soil subsidence and even deviation in plate boundaries. This over pumping of ground water from the soil causes the ground to sink as the soil compacts and also the soil is not capable to support the land above it. As the water table has been over pumped, the level of water at the ground decreases and necessitates deeper well drilling for the source.

The agriculture sector is dependent over the ground water for the purpose of irrigating at all over the world, as surface water availability is limited for irrigation and due to the depletion of ground water table it has become a serious threat to the farming. Though the surface water availability is low, for the places far from the availability is dependent over the water conveyance system which is a cheaper and quicker mode to transport.

Simply put, climate change disrupts the water cycle, causing less precipitation than normal, while population growth and increased food demand push agricultural businesses to pump more water out of the ground. This is known as water stress and warrants artificial groundwater recharge [4].

Ground water depletion is also caused due to the availability of surface water at lakes and streams in a reduced manner. As we all know that, the source of ground water is also achieved through surface water in an intricate way, less groundwater may imply less water flowing into wetlands and other ecosystems that rely on it. Hence the result will be less vegetation and less water quality which has high impact on Farmers and ranchers who often rely heavily on groundwater. **Figure 2** shows the process of ground water recharge [5].
