RAIN WATER HARVESTING is a process involving collection and storage of rain water (with the help of artificially designed system) that runs off natural or man-made catchment areas e.g. roof top, compounds, rock surface or hill slopes or artificially repaired impervious/semi-pervious land surface.
RAIN WATER HARVESTING, certainly depends various factors which contribute to the amount of rain water harvested e.g. the frequency and the quantity of rainfall, catchments characteristics, water demands and the quantum of runoff, and very importantly the volume & economics of artificial Rain water storage tanks and also underground soil strata for ground water recharge of Rain water.
RAIN WATER HARVESTING, broadly classified as ROOF TOP RAIN WATER HRVESTING : Which harvest the rain water fallen on the roof. SURFACE RAIN WATER HARVESTING : Which harvest the Rain water fallen on the surrounding ground surface.
Typical Roof Top Rainwater Harvesting System Comprises of :
- Roof catchment
- Gutters/Rain water conveying piping system
- Downpipes
- Rain water Filtration system
- Harvested Rain water storage / recharge system such as Tanks, Tube wells, Wells, etc