N. Sulochna
Rainwater Harvesting Potential
Catchment area – 200 square metres (sq. m)
Average annual rainfall in Chennai – 1,200 millimetre (mm)
Total water available from rainfall – 204 cubic metre (m3) or 2,04,000 litres
Rainwater Harvesting System
A combination of storage and recharge system is being used to harvest the runoff from the terrace. 50% of the rainwater harvested from the rooftop is being collected in an active well after being filtered through B and S filter.
The remaining 50% water from the rooftop is being recharged through three percolation pits. The percolation pits have a PVC pipe of 300 mm diameter of depth 3 metres to discharge the collected water to the sub soil.
The rainwater harvesting structure was completed in August 2000 at a cost of Rs 12,300.
Impact: There was an improvement in the groundwater quality.
Contact Person:
N. Sulochna
No. 20, 2nd Main Road, R. K. Nagar,
Mandaiveli, Chennai – 28
Phone: (044) 4939137
Project designed by:
D V Subramanian
Krishnakutir,
11, Justice Sundaram Road,
Mylapore, Chennai - 4
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N. V. Gopal
Rainwater Harvesting Potential
Catchment area – 300 square metres (sq. m)
Average annual rainfall in Chennai – 1,200 millimetre (mm)
Total water available from rainfall – 306 cubic metre (m3) or 3,06,000 litres
Rainwater Harvesting System
Runoff from terraces of two buildings and two garages is used to recharge the sub soil. Approximately 50% of the runoff is diverted to a dry well through three inlets. The remaining water is recharged using a percolation borewell after filtration from a B and S filter.
The rainwater harvesting structure was completed in August 2000 at a cost of Rs 15,000.
Impact: There was an improvement in the groundwater quality.
Contact Person:
N. V. Gopal
No. 14, Ratna Street, Gopalapuram,
Chennai – 86
Phone: (044) 8277746
Project designed by:
D V Subramanian
Krishnakutir,
11, Justice Sundaram Road,
Mylapore, Chennai - 4
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Balasubramanian
Rainwater Harvesting Potential
Catchment area – 160 square metres (sq. m)
Average annual rainfall in Chennai – 1,200 millimetre (mm)
Total water available from rainfall – 163.2 cubic metre (m3) or 1,63,200 litres
Rainwater Harvesting System
Runoff from the terrace and the garage rooftop is harvested using two percolation pits. The percolation pits have been constructed on either side of the working borewell to achieve maximum benefit.
The surface runoff from the paved areas flows to a shallow gutter at the entrance gate. The water from the gutter is recharged to the sub soil using a percolation pit.
The rainwater harvesting structure was completed in the year 2000 at a cost of Rs 11,000.
Impact: There was an improvement in the groundwater quality.
Contact Person:
Balasubramanian
No. 8, R. K. Nagar, 2nd Cross St.,
Mandaivelli, Chennai
Phone: (044) 4939669
Project designed by:
D V Subramanian
Krishnakutir,
11, Justice Sundaram Road,
Mylapore, Chennai - 4
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Sweetha
Rainwater Harvesting Potential
Catchment area – 300 square metres (sq. m)
Average annual rainfall in Chennai – 1,200 millimetre (mm)
Total water available from rainfall – 306 cubic metre (m3) or 3,06,000 litres
Rainwater Harvesting System
The rainwater harvested from the rooftop is recharged to the sub soil using an abandoned dry well at the rear side of the building. Two outlets on either side of the building discharge the rooftop runoff to the dry well through 100 mm diameter PVC pipes.
The rainwater harvesting structure was completed in the year 2000 at a cost of Rs 13,500.
Impact: The dry well became active after a heavy shower, soon after the installation of the structure.
Contact Person:
Sweetha
No. 15, 9th Cross St., Shastrinagar,
Chennai - 20
Phone: (044) 4939669
Project designed by:
D V Subramanian
Krishnakutir,
11, Justice Sundaram Road,
Mylapore, Chennai - 4
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D V Subramanian
Rainwater Harvesting Potential
Catchment area – 160 square metres (sq. m)
Average annual rainfall in Chennai – 1,200 millimetre (mm)
Total water available from rainfall – 163.2 cubic metre (m3) or 1,63,200 litres
Rainwater Harvesting System
The runoff is harvested using a combination of recharge and storage. Rooftop rainwater is harvested using two percolation pits with 300 mm diameter PVC pipes of 6 meter depth.
Surface runoff is recharged using similar percolation pits and an abandoned borewell. Runoff from the 12 sq. m lift room terrace is stored in an overhead tank after filtration.
The rainwater harvesting structure was completed in the year 2000 at a cost of Rs 4,500.
Impact: The dry well got activated from the rooftop runoff after a heavy shower, soon after installation. There was also an improvement in yield of the borewell.
Contact Person:
D V Subramanian
Krishnakutir,
11, Justice Sundaram Road,
Mylapore, Chennai - 4
Phone: (044) 4661743
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Cho Ramaswamy
Rainwater Harvesting Potential
Catchment area – 1000 square metres (sq. m)
Average annual rainfall in Chennai – 1,200 millimetre (mm)
Total water available from rainfall – 1020 cubic metre (m3) or 10,20,000 litres
Rainwater Harvesting System
The rooftop rainwater and the surface runoff is harvested using percolation pits and an active well. Rainwater from the 200 sq. m terrace is filtered using gravel filter and routed to an active well. Runoff from another 100 sq. m of terrace is diverted to two percolation pits.
Surface runoff from the open areas in front of the building is recharged to the sub soil using two percolation pits provided with two boreholes of 6 metre each. Runoff from the rear areas is recharged through three percolation pits with 300 mm diameter boreholes of depth 3 metres.
The rainwater harvesting structure was completed in the year 2000 at a cost of Rs 13,000.
Impact: Complete runoff is used for recharging the groundwater.
Contact Person:
Cho Ramaswamy
Ramanadham,
No. 29, Vasantha Avenue,
MRC Nagar, Chennai - 28
Phone: (044) 4936914
Project designed by:
D V Subramanian
Krishnakutir,
11, Justice Sundaram Road,
Mylapore, Chennai - 4
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Surya
Rainwater Harvesting Potential
Catchment area – 200 square metres (sq. m)
Average annual rainfall in Chennai – 1,200 millimetre (mm)
Total water available from rainfall – 204 cubic metre (m3) or 2,04,000 litres
Rainwater Harvesting System
Runoff from the rooftop is harvested using an active borewell. The runoff is diverted to the well after filtration from a B & S filter and fine silt.
The rainwater harvesting structure was completed in the year 2000 at a cost of Rs 2,200.
Impact: Complete runoff is used for recharging the groundwater.
Contact Person:
Surya
Phone: (044) 4936914
Project designed by:
D V Subramanian
Krishnakutir,
11, Justice Sundaram Road,
Mylapore, Chennai - 4
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