Urban RWH | Centre for Science and Environment

Urban RWH


Capturing Rainwater

A way to augment Chandigarh’s water resources

CSE has submitted a report on city wide rainwater harvesting for Chandigarh as a part of its work as Centre Of Excellence under the Ministry of Urban Development. Chandigarh does not have any surface water source and there is a steep decline in the groundwater levels in the city. The city has very few options for sourcing water, recharging the confined aquifers from where water is being tapped becomes a necessity. Every summer, newspaper reports quote residents residing on the second and third floors in the southern sectors of the city complaining about the shortage of drinking water.

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Water Harvesters

 
Ashutosh Agnihotri

Royal Bhutanese Embassy’s Rainwater Harvesting System

 

RAINWATER AVAILABLE FOR HARVESTING

Total rooftop and surface area: 31,363 square metres (sq m)

Average annual rainfall in Delhi: 611 millimetres (mm)

Total volume of rainwater harvested: 7,867 cubic metres (m 3 ) 78,67,000 litres

Therefore, 26 per cent of total rooftop and surface runoff is being harvested.

Nizamuddin East Colony’s Rainwater Harvesting System

 

RAINWATER AVAILABLE FOR HARVESTING

Total rooftop and surface area: 2,00,916 square metres (sq m)
Average annual rainfall in Delhi: 611 millimetres (mm)
Total volume of rainwater harvested: 48,531 cubic metres (m 3 ) or 4,85,13,149 litres.

Therefore, 39.6 per cent of total rooftop and surface runoff is being harvested.

Delhi Gymkhana Club’s Rainwater Harvesting System

 

RAINWATER AVAILABLE FOR HARVESTING
Total rooftop and surface area: 1,13,344 square metres (sq m)
Average annual rainfall in Delhi: 611 millimetres (mm)
Total volume of rainwater harvested: 28,765.8 cubic metres (m 3) or 2,87,65,849.4 litres.

Therefore, 43 per cent of total rooftop and surface runoff is being harvested.

New Friends Club’s Rainwater Harvesting System

 

RAINWATER AVAILABLE FOR HARVESTING

Total rooftop and surface area: 3,700 square metres (sq m)
Average annual rainfall in Delhi: 611 millimetre (mm)
Total volume of rainwater harvested: 960.79 cubic metres (m 3 ) or 9,60,797 litres

Therefore, 42 per cent of total rooftop and surface runoff is being harvested.

Mother Dairy F & V Unit’s Rainwater Harvesting System

 

RAINWATER AVAILABLE FOR HARVESTING

Total rooftop and surface area: 89,370 square metres (sq m)
Average annual rainfall in Delhi: 611 millimetres (mm)
Total volume of rainwater harvested: 32,250 cubic metres (m 3) or 3,22,49,802 litres.

Therefore, 59 per cent of the total rooftop and surface runoff is being harvested.

 

Surya Vihar Rainwater Harvesting System

RAINWATER AVAILABLE FOR HARVESTING

Total rooftop and surface area:

44,029square metres (sq m)

Average annual rainfall in Gurgaon: 

577.8 millimetres (mm)

Total volume of rainwater harvested: 

18,207 cubic metres (m 3 ) or 1,82,07,031 litres

Therefore, 85 per cent of the total rooftop and surface runoff is being harvested.

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