Abstract:
India  is  blessed  with  a  rich  and  vast  diversity  of  natural  resources,  water  being  one  of  them. Water  is  nature's  most  wonderful,  abundant  and  useful  compound.   There  are  many  essential elements  for  the  existence  of  living  beings;  water  is  rated  to  be  of  the  greatest  importance. Without  food,  humans  can  survive  for  a  number  of  days,  but  without  water  one  cannot  survive for  more  than  a  day.  Water  is  not  only  essential  for  the  lives  of  animals  and  plants,  but  also occupies  a  unique  position  in  industries.  Groundwater  is  an  important  source  of  water  supply throughout  the  world.  Groundwater  occurs  almost  everywhere  beneath  the  earth  surface  not  in  a single  widespread  aquifer  but  in  thousands  of  local  aquifer  systems  and  compartments  that  have similar  characters.  Knowledge  of  the  occurrence,  replenishment,  and  recovery  of  groundwater has  special  significance  in  arid  and  semi-arid  regions  due  to  discrepancy  in  monsoonal  rainfall, insufficient  surface  waters  and  over  drafting  of  groundwater  resources.