Teton County Flood Notifications


National Weather Service Great Falls MT

Flood Watch
National Weather Service Great Falls MT
804 PM MDT Thu May 30 2019

Northern Rocky Mountain Front-Eastern Glacier-Cascade-Central and Southern Lewis and Clark-Eastern Pondera-Southern Rocky Mountain Front-Eastern Teton-Including Logan Pass, Marias Pass, Browning, Heart Butte, Cut Bank, Great Falls, Cascade, Belt, Kings Hill Pass, Helena, Lincoln, MacDonald Pass, Rogers Pass, Brady, Conrad, Bynum, Choteau, Augusta, Fairfield, and Dutton


The Flood Watch continues for portions of central Montana, north-central Montana, and west-central Montana, including the following areas, in central Montana, Cascade County. In north-central Montana, Eastern Glacier, Eastern Pondera, Eastern Teton, Northern Rocky Mountain Front, and Southern Rocky Mountain Front. In west-central Montana, Central and Southern Lewis and Clark County.

Through Saturday morning.

Slow-moving showers and thunderstorms will affect the watch area through Friday, especially during the afternoon and early evening hours. A considerable snowpack remains in place across the higher terrain of the Rocky Mountain Front. The combination of locally excessive rainfall, snowmelt, and existing high water levels along area streams and rivers may cause additional flooding.

Confidence: Low


A Flood Watch means there is a potential for flooding based on current forecasts.

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Turn around, don’t drown when encountering flooded roads. Most flood deaths occur in vehicles.


    • From the Choteau Acantha: While water levels are dropping, the Teton River is still out of its banks and is damaging the Teton Canyon Road about .3 of a mile west of the intersection with U.S. Highway 89. The Teton County Road Department is trying to save the road but the high water has already eroded the paved road to the middle line. Teton County Commissioner Jim Hodgskiss said the county is letting local traffic pass, but that could change if the erosion continues. He said the Road Department has heavy equipment at the site and is trying to divert water so that gravel can be poured into the eroded area for a short-term fix. As of 1:45 p.m. Tuesday, the flow at the South Fork of the Teton River bridge is down from a high of 3,840 cubic feet per second at 2 a.m. Monday to 643 cfs and a level of 5.71 feet. But, the river is out its banks in many places and has also closed U.S. Highway 287 south of Choteau.
  • Some Choteau residents are experiencing water in basements.  Please see the information below regarding sump pumps.
  • Teton County Road crews continue to flag and open plugged culverts. Please watch for flags!
  • Please contact the Teton County Road Department at 466-2671 if they encounter water over the road that hasn’t been flagged.


Upcoming Meetings and Minutes

Meetings are held at the Teton County Annex (19 Main Ave S., Choteau) at 10am, unless indicated otherwise.  All dates, times , and locations are subject to change.  Please click the date below to access meeting minutes.

There are no meetings scheduled at this time.


Discharging a sump pump into the city’s sanitary sewer system is a big “no-no”‘. While this might seem like an easier and more attractive option than running a discharge tube from the sump pump to the exterior, it’s illegal in the City of Choteau (as in most cities), when the home is connected to the city sewer.

The main reason that cities don’t allow this is that during big storms or periods of high groundwater their sewage treatment facilities can be overloaded. When this happens, either sewage backs up into people’s homes, or the sewage water only gets partially treated before being dumped into local streams and rivers, in our case, the Teton River.

If you have this type of setup at your own home, the ‘good citizen’ thing to do is to make the sump pump discharge to the exterior. Water your trees or shrubs with it. Run it to the street, if need be.

If you need help determining if your sump pump is connected to the city sewer system, please call the City of Choteau Office at 406-466-2510. We will be more than happy to evaluate your system and offer advice to rectify the problem.


American Red Cross – Flood Safety
Ready.gov – Floods
FEMA – How to Prepare for a Flood
NOAA – Flood Safety