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World Disasters Report 2010 - International Federation of Red Cross ...

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Figure 2.5<br />

Port cities with highest exposed population in 2005 to one-in-100-year,<br />

surge-induced flood events<br />

New Orleans<br />

1.12m<br />

Miami<br />

2m<br />

Rotterdam<br />

0.75m<br />

Abidjan<br />

0.51m<br />

Amsterdam<br />

0.83m<br />

Alexandria<br />

1.33m<br />

Mumbai<br />

2.78m<br />

New York<br />

1.54m Kolkata<br />

1.92m<br />

Bangkok<br />

0.90m<br />

Dhaka<br />

0.84m<br />

Guangzhou,<br />

Guangdong<br />

2.71m<br />

Shanghai<br />

2.35m<br />

Shenzen<br />

0.70m<br />

Haiphong<br />

0.79m<br />

Tianjin<br />

0.95m<br />

Ho Chi Minh City<br />

1.93m<br />

Nagoya<br />

0.69m<br />

<strong>World</strong> <strong>Disasters</strong> <strong>Report</strong> <strong>2010</strong> – Focus on urban risk<br />

Tokyo<br />

1.11m<br />

Osaka–Kobe<br />

1.37m<br />

As a result <strong>of</strong> projected growth and climatic change over the period, many smaller<br />

cities will also experience very rapid increases in population exposure, for example,<br />

Mogadishu in Somalia and Conakry in Guinea are expected to see population exposure<br />

increased by 12-fold (see Table 2.2). Of the 15 cities that will see the highest<br />

population exposure increase, six <strong>of</strong> them are in sub-Saharan Africa and eight are in<br />

Asia. One needs to view these findings with caution, however, because the projections<br />

for urban growth over the period may be totally distorted. Some countries, especially<br />

those in sub-Saharan Africa, may not have had a census for over 20 years. For example,<br />

Mogadishu is within a failed state, yet the index envisages it growing hugely.<br />

Nonetheless, while absolute exposure is low in some <strong>of</strong> these cities, a rapid increase in<br />

exposure to flooding can lead to increases in small-scale disasters. The potential for losses<br />

at the household level in these cities is especially acute in the fast-growing and low-lying<br />

informal settlements lacking adequate flood protection and drainage infrastructure.<br />

Furthermore, Dhaka, Chittagong and Khulna in Bangladesh, Yangon in Myanmar and<br />

Ningbo in China are all expected to experience high absolute exposure, meaning that<br />

these cities will also be at risk for large-scale flooding disasters, which could impact on<br />

large portions <strong>of</strong> the city, damaging infrastructure and economic activities.<br />

Source: Nicholls et al. (2008)<br />

41

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