Coastal Flooding Exposure

Hot on the heels of yesterday’s posting about modeling and as the UN Climate Change Conference continues in Bali, the release of a global study on coastal flooding by the OECD, RMS and the University of Southampton is timely. The study makes a first estimate of the exposure of the world’s largest port cities to coastal flooding due to storm surge and damage due to high winds. It also investigates how climate change is likely to impact each port city’s exposure to coastal flooding by the 2070s, alongside subsidence and population growth and urbanization. The upshot is that the total population  reliant on flood defenses  could more than triple from 40 million today to around 150 million people by 2070. In the same period, total assets exposed will grow even more dramatically, more than 10 times current levels reaching $35,000 billion. The findings are ominous for a number of U.S. cities, with Miami topping the list in terms of assets exposed to coastal flooding ($416.3 billion today and increasing to $3,513 billion by the 2070s). New York-Newark places third with exposed assets of $320.2 billion, rising to $2,147 billion by the 2070s. New Orleans ranks 12th, with $233.7 billion in exposed assets, rising to $1,013 billion by the 2070s, while Virginia Beach ranks 19th, with $84.6 billion in current exposed assets, increasing to $581.7 billion by the 2070s. How to put in place effective climate change policies and disaster management strategies are just some of the challenges the study highlights. Check out I.I.I. facts & stats on flood insurance.

Leave a Reply

Your email address will not be published. Required fields are marked *