Floodplain Information


2014 FEMA floodplain map updates                                      

Flathead County and the Montana Department of Natural Resources and Conservation (DNRC) will be hosting two public informational meetings to present preliminary results of updated floodplain mapping:

  • 6:30 pm on Wednesday, May 21st - Whitefish City Hall, City Council Chambers, 402 East Second St., Whitefish
  • 6:30 pm on thursday, May 22nd - Kalispell City Hall, City Council Chambers, 201 First Ave. E., Kalispell

The meetings are open to the public and will include time to review floodplain maps and information, a short informational presentation at 7pm, and time for individual questions.

The preliminary maps and study are available for public review and comment at this time.  The project was initiated in 2011 to update existing mapped floodplains in Flathead County with more accurate information.  Montana DNRC managed the project, the Federal Emergency Management Agency (FEMA) provided grant funding and project oversight.  The maps and study undergo public review prior to being finalized.

New detailed floodplain studies were conducted on portions of the following streams - Swan River at Bigfork, Cow Creek, Whitefish River at Whitefish, Ashley Creek, West Spring Creek & tributaries, and Whitefish River at Kalispell.  The detailed floodplain studies were conducted to replace the existing mapped floodplains in those locations, which were mapped using approximate methods, and called Zone A floodplains.  Detailed floodplain studies involved survey work, hydrologic and hydraulic analyses and mapping.  Some of the other existing Zone A floodplains in the county were refined based on updated, more accurate topographic information.

The proposed changes for the detailed study area and the Zone A refinement areas can be viewed at:


FEMA website with all affected preliminary floodplain maps (by panel number):



FEMA letter regarding update process, April 22, 2014

FEMA Preliminary Summary of Map Actions (SOMA)


For more information contact:

Tiffany Lyden, DNRC Helena, 406-444-0599  tlyden@mt.gov


Flathead County Planning Department, 406-751-8200

Useful Links

How to Make a FIRMette! Click HERE

FEMA's Map Service Center - www.msc.fema.gov

Answers to Questions About the NFIP - Click HERE

Elevation Certificate - Click HERE

Flood Tools Website - www.floodtools.com

Updated: August 1, 2014