Stormwater (surface runoff) Harvesting

Surface Runoff is the overland flow of water resulting from rainfall before it reaches a water course. It is generated because impervious areas do not allow water to soak into the ground. When there is heavy rainfall the surface water occurs in abnormal quantity resulting in stormwater. Stormwater is usually generated over various impervious surfaces like roads, pavements, pavered grounds, paved open spaces within society, institutions, houses, big buildings, auditoriums, malls, parks, industries etc. In cities due to paved surfaces stormwater is generated in large quantity. Hence, due to limitations of artificial filters, very limited quantity needs to be channelised through the pipes and used as a source water for artificial groundwater recharge. This contains lots of impurities, silt, clay etc, hence need to be artificially cleaned using scientific filters. This cleaned water is then used for recharging the aquifer/s artificially through one existing good yielding borewell or construction of a new recharge borewell (recharge shaft) or a dug well.