The flood zone map layer shows an area's flood zone designation as determined by the Federal Emergency Management Agency (FEMA). A high-risk area has a 1 percent or greater annual chance of flooding and a 26 percent chance of flooding over the life of a 30-year mortgage. High-risk areas are shaded red or orange on the map. The coast areas, shown in purple, are also considered high risk. The green areas are low to moderate risk. A moderate-risk area is between risk limits of a 100-year and 500-year flood. White areas are undetermined, and all other areas are considered no or low risk.
Flood zone data is provided by the FEMA Map Service Center and is updated once per year on the RPR website. The data currently displayed is for 2017 and was released Feb 2018.