Rooftop Rainwater Harvesting
1. Groundwater aquifer recharge
Different types of structures can be used to replenish groundwater aquifers so that precipitation percolates into the ground instead of draining away from the surface. The following are typical recharge techniques:
• replenishment of bore wells
• filling up of excavated wells
• refilling pits
• trenches for recharge
• shafts of recharge or soakaways
• filtration tank