Teton County Flood Maps Update

Have comments about the current draft mapping? 

Click this link to comment on certain areas regarding the draft map: https://forms.office.com/g/Rw4wMPXmth

Teton County and the City of Choteau have been working with the Federal Emergency Management Agency (FEMA) and Montana Department of Natural Resources and Conservation (DNRC) to update and produce new floodplain maps for the Teton River, Sun River, Spring Creek, Deep Creek, Muddy Creek and Tributaries.

Many of the existing floodplain maps are based on data from the late 1970s.  Updated Flood Insurance Rate Maps will provide more accurate, current, and detailed data and mapping of flood risk areas. For more information on the background of the floodplain maps click here.

Landowner Fact Sheets:

• 100 year floodplain
• Floodway (within 100 year floodplain)
• 500 year floodplain
• Property Owner FAQ - National Flood Insurance Program (NFIP)
• Hydrology FAQ
• Open House Powerpoint Deck
• Feedback Form

Flood Insurance information:

The draft study information and maps need to go through a lengthy technical and public review process before being finalized. When finalized, new maps could have effects on property owners in mapped floodplains.

Flood Study Reports:

Report appendix's available upon request to local floodplain administrator

The Flood Resiliency Meeting was held with Teton County and the City of Choteau on 11/14/2024. To view the meeting slides click here. To view the county meeting click here to view the city meeting click here. 

A Public Open House was held on 5/29/2024. To view the meeting slides click here.

Teton County Hydrology Meeting was held with Teton County and the City of Choteau on 4/30/2024. To view the meeting slides click here, and recording click here.

Teton County Project Update Meeting was held with Teton County and the City of Choteau on 2/21/2024. To view the meeting slides click here, and recording click here. 

Flood Risk Review Meeting was held with Teton County and the City of Choteau on 10/25/2023
To view the meeting slides click here, and recording click here.

A project kick off meeting was held with Teton County and City of Choteau on 9/03/2020
To view the meeting slides click here.

DNRC with support from Teton County applied and received a grant from FEMA to update and produce new Flood Insurance Rate Maps for the county and city. Updated floodplain maps will depict the latest, most accurate flood risk data, and will eventually replace FEMA’s existing floodplain maps which are based on data collected in the 1970s.

Below are the study extents for the project.

For additional questions contact your local floodplain administrator.

Brian Colesworthy
Teton County Floodplain Administrator
bcolesworthy@tetoncountymt.gov
406.466.3130

Jerry Grebenc
City of Choteau Floodplain Administrator
jgrebenc@greatwesteng.com
406.495.6153

Kevin Angland
City of Choteau Floodplain Administrator
kangland@greatwesteng.com
406.740.7250