Water harvesting is the concept of capture, collection and storage of every drop of water
that has fallen on the land in small pits, lakes, watershed systems, small earthern dams,
constructed dykes, sand and limestone reservoirs, rooftop water collecting systems, etc.
Advantages associated with water harvesting:
(i) It increases the production and income of the watershed community.
(ii) It also mitigates droughts and floods and increases the life of downstream dams and
reservoirs.
Causes for failure of sustained availability of groundwater are:
(i) Loss of vegetation cover.
(ii) Diversion for high demanding water crops.
(iii) Pollution from industrial effluents and urban wastes.
