AIR Currents

100-year flood hazard does not correspond to a 100-year flood loss

April 23, 2013

Did you know that a 100-year flood hazard does not correspond to a 100-year flood loss? The 100-year loss is associated with a particular event and can be specified at varying levels of geographic resolution. The 100-year flood hazard, on the other hand, corresponds to the river flow rate that has a 1% annual probability of exceedance at each section of the river. It is thus not associated with a specific event. The 100-year flood hazard can be mapped as a floodplain that shows the expected inundation extent. Learn more about flood modeling

100 year loss  


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