FEMA Flood Data Layer

The software can display the FEMA digital Flood Insurance Rate Map (FIRM) directly on the Map View. It is required that the Map View be assigned a coordinate reference system so that the FEMA FIRM map can be correctly georeferenced to match the map coordinates.

The FEMA digital FIRM map contains the following data:

  • Flood Hazard Zones & Boundaries
  • Flood Structures (i.e., roadway crossings, dams, etc.)
  • Levees
  • Base Flood Elevations
  • Cross Sections
  • High Water Marks
  • River Mile Markers
  • and more…

Follow these steps to display the FEMA FIRM map:

  1. Select Watershed | FEMA Flood Data from the ribbon menu.
    FEMA Flood Data menu
  2. The FEMA Flood Data dialog box will be displayed.
    FEMA Flood Data dialog box
  3. This dialog box provides various options for displaying various FEMA map elements. Generally the default settings fulfill most flood mapping requirements. To revert back to the default settings, click the [Default] button.
  4. When the flood map options have been properly selected, click the [OK] button to display the FEMA flood map on to the Map View.
    FEMA Flood Map
  5. As you zoom and pan about, the FEMA flood map will automatically update to fill the extent of the Map View display.
  6. The Map Data Layers panel will contain a legend detailing the contents of the displayed FEMA flood map. Expand the layer to see the legend details.
    FEMA Flood Data Legend

Related Articles