Measures taken for water harvesting The rainwater endowment of the area is 811 millions litres annually. Estimated cost of installing the system is Rs. Well recharging Overflow from the 1 lakh litre capacity rainwater storage tank mentioned above is diverted to two dugwells for recharging. Rainwater from the southern side of the roof is diverted for recharging a dry open well. Rainfall runoff from the staff residential area is also diverted to the dry well.
Water passing into the recharge well is passed through a desilting tank to remove pollutants.
The 9 lakh litre capacity swimming pool in the estate is planned to be connected to the dry dugwell, so that during periodic emptying of the pool, water can be used for recharging instead of being drained away. Recharge shaft 15 m deep recharge shafts will be constructed in the staff residential area. Rainwater available from rooftops, roads and parks will be used for recharging. A johad is a crescent-shaped bund which is built across a sloping catchment to capture the surface runoff. Water accumulating in the johad percolates in the soil to augment the groundwater.