The Mousam River, Cape Neddick River, Little River, and Ogunquit River were just a handful of many rivers in York County that saw 500 year floods. This means that in any given year, a flood of ...

FEMA’s outdated 100-year floodplain delineations fail to capture evolving flood risk, leading to development inside and outside of 100-year floodplains and potentially higher flood risk for vulnerable ...

According to the U.S. Geological Survey, one statistic scientists use is the percentage chance that a flood of a specific magnitude will happen. A 500-year flood means such an event has a 1 in 500 ...

Bush declared 39 counties in central Indiana a federal disaster area. At the time it was considered the second 500-year flood within a 15-year window, leading some people to ask how such a thing ...

According to the U.S. Geological Survey, one statistic scientists use is the percentage chance that a flood of a specific magnitude will happen. A 500-year flood means such an event has a 1 in 500 ...

Weather forecasters sometimes warn of storms that unleash rains so unusual they are described as 100-year or even 500-year floods. Here’s what to know about how scientists determine how extreme ...