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Indian Cities Need Sponge City Approach as Mumbai Floods Expose Engineering Limits; China Aims 80% Rainwater Reuse by 2030

EnvironmentUrban PlanningDisaster ManagementHIGH
Target:UPSC GS-IIIMPSCTeachingSSC GAPrelims HighMains HighStatic GK Link
07 Jul 2026
~2 min
Source: Indian Express
Key Data:Mumbai annual rainfall 2,400 mmChina 2030 target: 80% urban areas capture 70% rainfallBeijing floods 2012
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What This Article Covers

1.Mumbai's annual swing between water shortage and flooding is due to a utilitarian view of water, ignoring its ecological role.

2.Sunil Amrith's book 'Unruly Waters' argues that engineering interventions (dams, reclamation) have failed to control water.

3.The Sponge City concept, pioneered by Kongjian Yu in China, advocates working with nature: absorb, filter, store, and release rainwater.

The Big Picture
Prelims · HighMains · High

This opinion piece criticizes the engineering-centric approach to urban water management in Indian cities, using Mumbai as a case study. It highlights the paradox of alternating water scarcity and floods, and proposes the Sponge City model—integrating natural systems—as a sustainable solution. The article is crucial for understanding urban climate adaptation and disaster resilience for UPSC GS3.

Exam Lens

Quick Exam Facts From News

Mumbai Annual Rainfall2,400 mm
China's 2030 Target80% urban areas capture 70% of annual rainfall
Key BookUnruly Waters by Sunil Amrith
Trigger EventBeijing floods of 2012 led to Sponge City programme

1-Minute Revision

  • ›Mumbai Annual Rainfall: 2,400 mm
  • ›China's 2030 Target: 80% urban areas capture 70% of annual rainfall
  • ›Target this Data: Mumbai receives 2,400 mm annual rainfall
  • ›Target this Concept: Sponge City model (Kongjian Yu, China's 80% capture target by 2030)
  • ›Target this Book: 'Unruly Waters' by Sunil Amrith

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Practice exam-style questions, track your score, and strengthen your recall.

Q1Static LinkageEasy

Which country implemented the 'Sponge City' programme on a national scale after the 2012 Beijing floods?

Q2Statement-basedHard

Consider the following statements:

1. Mumbai's annual rainfall is approximately 2,400 mm, making it a water-sufficient city.

2. The Sponge City model treats rainwater as an inconvenience to be flushed away quickly.

3. Climate change, through warming of the Arabian Sea, has increased the intensity of extreme rainfall events in Mumbai.

Which of the statements given above is/are correct?

Q3Data-centricMedium

According to the article, what is China's long-term target for sponge city implementation by 2030?

Q4Application/ImpactMedium

What is the primary objective of the Sponge City concept as described in the article?

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