Category: 100-Year Floodplain

What is the 100-Year Floodplain?

A 100-year floodplain or flood zone is a zone that has a one percent chance of flooding on an annual basis. There are areas on maps specifically signaled to be 100-year flood zones because that area should expect a flood at least once every 100 years — thus the one percent chance. These are areas… Read more »