Percolation tank is an artificially created surface water body, submerging in its reservoir a highly permeable land so that surface runoff is made to percolate and recharge the ground water storage. The percolation tanks are mostly earthen dams with masonry structure only for spillway. Percolation tank should be constructed preferable on second to third order streams, located on highly fractured and weathered rocks which have lateral continuity down stream. Low cost rainwater harvesting System in Vadodara Economical Rainwater Harvesting system in Ahmedabad Water Harvesting solution in Gujarat. Percolation well manufacturer in Gujarat. Email: info.allegianceindia@gmail.com