Floodplain Map

What is a Floodplain?

A floodplain is any land area susceptible to flooding. This can happen by the collection, pooling, and flowing of water from any source during the course of natural events. Floodplains may be classified as FEMA Special Flood Hazard Areas (SFHA) and are located in a 100-year flood zone. The term “100-year flood zone” refers to an area that has a 1% chance of being flooded each year. 

The City's interactive map system shows the 100 year and 500 year flood zones. To access these maps, click the map and scroll down to the Environmental tab. Then, click it "on" to display the flood zone layers (purple and green). You can turn the two flood zones on and off as needed.

Interactive Map

Interactive Map
  1. Public Works Administration & Engineering

    Physical Address
    1400 Main St.
    Suite 320
    Southlake, TX 76092

    Phone: (817) 748-8098

Gold Contact Us Button

Floodplain Permitting

A special floodplain permit is required for new development construction within a floodplain. If this applies to your situation, please fill out the City's Floodplain Development Application, download it and submit it here. Keep in mind that development within a FEMA regulated floodplain may also require a separate submittal to that agency.