The red areas reflect the same zones in 2050. Blue areas are today’s 100-year flood-risk zones. Yet, translating that understanding into the detailed impact of future flooding has been beyond the grasp of existing flood mapping approaches.Ī map of Houston shows flood risk changing over the next 30 years. A warmer climate also leads to rising sea levels and higher storm surges as land ice melts and warming ocean water expands. Decades of measurements, computer models and basic physics all point to increasing precipitation and sea level rise.Īs the atmosphere warms, it holds about 7% more moisture for every degree Celsius that the temperature rises, meaning more moisture is available to fall as rain, potentially raising the risk of inland flooding. They also show the importance of altering development patterns now.įlooding is the most frequent and costliest natural disaster in the United States, and its costs are projected to rise as the climate warms. The results show the high costs of flooding and lay bare the inequities of who has to endure America’s crippling flood problem. 31, 2022, we estimated where flood risk is rising fastest and who is in harm’s way. It’s the data that drives local risk estimates you’re likely to see on real estate websites. Our team develops cutting-edge flood risk maps that incorporate climate change. flood losses will be four times higher than the climate-only effect. With population growth factored in, we found the increase in U.S. Despite recent devastating floods, people are still building in high-risk areas. Over the next three decades, the cost of flood damage is on pace to rise 26% due to climate change alone, an analysis of our new flood risk maps shows. University of Bristol provides funding as a founding partner of The Conversation UK.Ĭlimate change is raising flood risks in neighborhoods across the U.S. Paul Bates is Professor of Hydrology at the University of Bristol and also a founding shareholder of Fathom. Jeremy Porter is Professor of Quantitative Methods in the Social Sciences at CUNY and also the Chief Research Officer at the research and technology non-profit First Street Foundation. Oliver Wing is a Research Fellow at the University of Bristol and also the Chief Research Officer of Fathom, a flood risk analytics firm.Ĭarolyn Kousky is the Executive Director of the Wharton Risk Center at the University of Pennsylvania. Professor of Hydrology, School of Geographical Sciences, University of Bristol Professor of Quantitative Methods in the Social Sciences, City University of New York Executive Director, Wharton Risk Center, University of Pennsylvania
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