The Federal Emergency Management Agency categorizes land pockets all over the country as Special Flood Hazard Areas i.e. land that is prone to flooding. AP recently released data containing the number of housing units covered under the National Flood Insurance Program and the number of housing units located in potential flood hazard areas.
Using these numbers and housing units data from the 2010 Census, we calculated the percentage of homes in each county that are at risk of flooding. Using the map below, tap or mouse over a county to get more details.