What is water harvesting ? List two main advantages associated with water harvesting at the community level. Write two causes for the failure of sustained availability of groundwater.
Rain water harvesting is a technique of collection and storage of rainwater into natural reservoirs or tanks, or the infiltration of surface water into subsurface aquifers (before it is lost as surface runoff). One method of rainwater harvesting is rooftop harvesting.
Advantages --
Causes for failure of sustained groundwater availability are --