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DNRC Headquarters
1539 Eleventh Ave. Helena, MT 59601
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Madison-Ruby-Jefferson River Watersheds Flood Maps Update


Madison, Jefferson, Gallatin, and Broadwater Counties have been working with the Federal Emergency Management Agency (FEMA) and Montana Department of Natural Resources and Conservation (DNRC) to produce new floodplain maps for portions of the Madison, Ruby, Jefferson, Beaverhead and South Boulder Rivers, and Mill and Indian Creeks.  See project extents here.

Updated floodplain maps will depict the latest, most accurate flood risk data, and will eventually result in updated FEMA floodplain maps. Most of the existing FEMA floodplain maps and Madison County flood prone maps are based on data from the 1980s and 1990s. To understand why floodplains are mapped please visit the floodplain FAQ's page found here.

Three Forks Public Meeting | January 6, 2021 | 6 – 7:30pm | virtual meeting | Please register here

Three Forks is hosting a virtual public open house for landowners to review the draft maps in Three Forks.  Additional public meetings will be scheduled for other areas, check back for updates. 

Three Forks Public Meeting Information

In an effort to minimize bandwidth, the city of Three Forks is encouraging these options in order to increase your viewing & participation capabilities:

Dial into the Zoom meeting

* Watch on Facebook Live via the City’s page at https://www.facebook.com/threeforksmontana.us

* Host at your home or office, max 6 in attendance, and watch together via one virtual login session

Please call City Hall at 285-3431 if you DO NOT HAVE THE ABILITY to attend via Zoom. The City has limited seats available for physical attendance.      

If we exceed allowable participation on Zoom or in-person, we may schedule an additional open house.


View Draft Data

New floodplain maps from this project are not expected to be finalized for a while – new studies and maps need to go through a lengthy technical and public review process before they can be finalized. When finalized, new maps could have effects on some property owners in mapped 100-year floodplains. 

 

*please be patient while the data loads on the viewer, there is a lot of data loaded in the viewer*

You can also view individual draft maps here:
Draft floodplain maps

Get more information on floodplain designations referenced on the maps, community meetings, and important information:

Gallatin County and the City of Three Forks

Public Meeting information:
  • January 6, 2021 - Three Forks Public Open House Meeting  | 6 – 7:30pm | virtual meeting
    Please register here   

    January 6 Meeting Information

    In an effort to minimize bandwidth, the city of Three Forks is encouraging these options in order to increase your viewing & participation capabilities:

    Dial into the Zoom meeting

    * Watch on Facebook Live via the City’s page at https://www.facebook.com/threeforksmontana.us

    * Host at your home or office, max 6 in attendance, and watch together via one virtual login session

    Please call City Hall at 285-3431 if you DO NOT HAVE THE ABILITY to attend via Zoom. The City has limited seats available for physical attendance.      

    If we exceed allowable participation on Zoom or in-person, we may schedule an additional open house.

  • City of Three Forks Mitigation meeting held December 2, 2020.  To view a video of the meeting click here 

  • City of Three Forks city council meeting held November 10, 2020. To view the slides presented click here.

Madison County and the Towns of Ennis, Twin Bridges, and Sheridan 

Public Meeting information for Madison County, Ennis, Twin Bridges & Sheridan:
Tentative dates February 2021 (please check back for more information).

Jefferson County
Please check back for more information

Broadwater County 
Please check back for more information

 


 Newly Mapped into a 100-Year Floodplain? See Low Cost Insurance Options 


Appeal and Comment information

The communities, state, and FEMA appreciate feedback as it's an important part of the process. If you have new information or would like to make a comment on the draft maps please click here to provide that feedback. FEMA will have a formal appeal and comment period around the end of 2021 (please check back for more information). 


Upcoming Public Meetings

City of Three Forks
January 6, 2021 - Three Forks Public Open House Meeting  | 6 – 7:30pm | virtual meeting
For meeting information click here

Madison County & Towns of Ennis, Twin Bridges, Sheridan
Please check back for more information

Jefferson, Broadwater & Gallatin Counties
Please check back for more information


Big Hole River Floodplain Maps

A flood study and floodplain maps for the Big Hole River were produced in 2015. The Big Hole River floodplain maps and study information will eventually be incorporated into preliminary FEMA floodplain maps at the same time as the rest of Madison County's draft floodplain maps.  Preliminary FEMA floodplain maps will go through a public review process before they are finalized.  


Know your property's flood risk

Floodplain maps indicate areas of flood risk. Once this project is complete, updated flood risk information  will be reflected on new and updated FEMA Flood Insurance Rate Maps.  These maps will provide more accurate, current, and detailed information about flood risk areas.

New floodplain studies involve collecting and analyzing data, including: topography, hydrology analyses and hydraulic analyses.  


Project Timeline

More Info

Floodplain FAQs

Maps and Technical Reports

Flood Study Process

 

Madison County

Alex Hogle
Floodplain Administrator/Planning Director
(406) 843-5250

Town of Ennis
Town of Twin Bridges

Jonathan Weaver
Floodplain Administrator
(406) 449-8627

Town of Sheridan

Bob Stump
Mayor/Floodplain Administrator
(406) 842-5431

Gallatin County

Sean O'Callaghan
Floodplain Administrator
(406) 582-3130

City of Three Forks

Kelly Smith
Floodplain Administrator
(406) 285-3431

Jefferson County

Megan Bullock
Floodplain Administrator
(406) 225-4126

Broadwater County

Jerry Grebenc
Floodplain Administrator
(406) 449-8627

DNRC Contacts

Nadene Wadsworth
DNRC Outreach Specialist
(406) 444-6732

Tiffany Lyden
DNRC Outreach Specialist
(406) 444-0599