Rain Water Harvesting System At Janki Devi Memorial College back to all projects
Rain Water Harvesting System At Janki Devi Memorial College

Location: New Delhi, Delhi, India

Project Work Status: Completed Projects

Cost: .70 Lac

Area: 32,170 Sq Metres

Project Completed: Jun-2001

RAINWATER AVAILABLE FOR HARVESTING 
Total rooftop and surface area: 32,170 square metres (sq m)

Average annual rainfall in Delhi: 611 millimetres (mm)

Total volume of rainwater harvested: 6880 cubic metres
or 68,80,000 litres 
This represents about 35 per cent of the total rainwater harvesting potential. 

WATER SUPPLY SOURCE 
The three borewells inside the campus cater to the total water requirements of the college.

RAINWATER HARVESTING SYSTEM
ROOFTOP WATER HARVESTING: The runoff from the terrace of the college building is channelised into three recharge wells located at three different locations, each measuring 1m x 1m x 2m. All the rooftop rainwater outlets, except that from the Tutorial Block, discharge into stormwater drains and then to the recharge structures. In the Tutorial Block, a network of pipes linked through chambers take the rainwater to the recharge wells. To facilitate groundwater recharge, all structures are provided with 15m deep borewells of 150mm diameter. Layer of bricks filled inside the recharge well ensures proper filtration of harvested water.

SURFACE RUNOFF WATER HARVESTING: The runoff from the unpaved area is intercepted at the main gate by a collection trench. From here the runoff eventually drains into an abandoned open well, which facilitates groundwater recharge.

The project was implemented in June 2001. The cost of the entire rainwater harvesting system was Rs 0.70 lakh.

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