To obtain a flood zone determination letter, please contact the Building Department at 904-310-3146. In order to better assist you with this request, please fill out the BUILDING-Request Letter and select the Flood Zone Determination. 

To view a static flood map, click the link below. Blue shaded areas indicate greater flood risk.
To view an interactive flood map, including the effective FEMA Flood Insurance Rate Map, please visit Nassau County Property Appraiser's Office.
  • Select the Search by Map option
  • Once the base map is loaded, select "Map Layers" from the top of the page. Then expand the "Environmental" section by clicking next to the + sign and check the Flood Zones Effective August 2, 2017 map layers.
  • Full GIS functionality is available to zoom in/out and search, providing a parcel level view for the user.