Exhibit 2: 2005 Mumbai flood and built environment changes

July 2005 flood event – impacted areas

Built up 2025

Built up 1975

Socio-economic overview:

  • Mumbai is the financial capital of India accounting for approximately 6.1% of the country’s GDP.
  • Home to around 13 million people, it is one of the densest megacities with around 28000 individuals
    living per sq. km.

Flood risk profile:

  • 90% of the city’s land surface is paved leaving little room for water seepage into the ground and
    produces fast runoff.
  • Over last few decades, the city has expanded in suburban areas.
  • Vulnerable to compounded risks of urban and coastal flooding, inadequate drainage and tidal backflows.

2005 flood event:

  • Costliest event in India with 2,250 crore INR (USD 500 million) insured losses in 2005 prices and
    over 1000 fatalities.
  • The July 2005 deluge was most severe, caused by 944 mm of rainfall in a day combined with high tides.
  • A repeat of this event today would cost close to INR 20,000 crore (USD 2.3 billion) in terms of insured losses.

Source: Flood Risks, Climate Change Impacts and Adaptation Benefits in Mumbai (EN) Global Human Settlement – Download – European Commission, Global Human Settlement – Download – European Commission