Jurisdictions in Linn County have adopted FEMA Flood Insurance Rate Maps (FIRM). The FIRM maps outline flood hazard information such as base flood elevations, base flood depths, special flood hazard area boundaries or the regulatory floodway.

City of Marion participates in the National Flood Insurance Program, which provides insurance to properties in or close to the floodplain. Such properties with federally insured loans may be required to have flood insurance, as determined by the lender.

Access the FEMA Flood Maps

• Follow this link to view the FEMA Flood Maps

• Type in your address in the upper left hand corner

• After the map zooms in on your address in the upper right hand corner, there is a layer list (looks like three pages stacked on top of each other). Click on that layer list and you’ll see:
  • Preliminary Changes since last FIRM layer -uncheck box
  • Pending National Flood Hazard layer - uncheck box 
  • Preliminary National Flood Hazard layer -uncheck box
  • Effective FIRM panels
  • National Flood Hazard Layer – follow this link to view the effective map
  • Coastal Barrier Resources System Area - uncheck box
• Toggle off the layers by unchecking the blue check marks at the front of the layers. Select the highlighted in orange above on and off to see the current map.
  • National Flood Hazard Layer – this is the current map that has been in use since 2024
    • Floodway – blue/red striped
    • Prelim zone AE – 1% floodplain (formerly called 100 year) – blue
    • 0.2% floodplain (formerly called 500 year) – orange

Learn about Criteria for Appeals

• Follow this link to learn about the Criteria for Appeals
• Follow this link to Letter of Map Amendment - Out as Shown

Questions may be directed to the Marion Engineering Department at 319-743-6340 or at Marion City Hall (Monday-Friday, 8 a.m.-5 p.m.) at 1225 6th Avenue, Marion.