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-- The projects are being built in several cities including shanghai , Wuhan and Xiamen
--By 2020. China hopes that 80% of its urban areas will absorb and reuse at least 70% of rainwater.
Introduction
The sponge city is a city that is designed to passively
absorb, clean and use rainfall in an ecologically friendly way to reduce
dangerous and polluted runoff. Associated techniques include permeable roads,
rooftop garden, rainwater harvesting, rain gardens, green space and blue space
such as ponds and lakes. Properly implemented sponge city can reduce the frequency of flood,improve water
quality and allow cities to use less water per person. Associated strategies
such as green space can also improve quality
of life, air quality and reduce urban
heat islands.
China and sponge city concept
In 2010,
landslide from flooding killed approximately 700 people in three quarters
of china’s provinces .In recent years, fatal flood like these have become
regular occurrences. The Chinese government has implemented following steps to alleviate the problem.
--The Chinese
government is building water-absorbed projects in 30 cities part of its “sponge city” initiative.
-- The projects are being built in several cities including shanghai , Wuhan and Xiamen
--By 2020. China hopes that 80% of its urban areas will absorb and reuse at least 70% of rainwater.
India’s
critical condition in urban flood
Urban flooding has become a recurrent issue in Indian metro
cities. Every year India faces urban flooding. Several people die mostly from
road accidents due to road potholes blockage, collapsing bridge and buildings. The
reason for such accident is weak infrastructure and drainage system. There is no
long-term vision to tackle such
climate challenges.The frequency of
these events has been increasing in the last couple of years Mumbai, Ahmedabad
, Chandigarh and Chennai have faced the
same catastrophic disasters.
Conclusion
India should consider “sponge cities” idea to curb urban
flood problems.Proper frame work is needed .China and India both
are the fastest growing economies,if China can implement sponge cities
concept India should also come with innovative ideas.