Missouri River at Toston MT

Broadwater County, Montana · USGS gauge 06054500 · NWS TOSM8 · Missouri River flood status · Montana river levels

Is Missouri River at Toston MT flooding right now?

Missouri River at Toston MT measured 3.03 ft on 2026-09-11 01:00:00 UTC. That observation was 7.5 ft below its 10.5 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height
3.03 ft
as of 2 hours ago
Streamflow
1,610 cfs
data refreshed 12 min ago

Minor flooding here begins at 10.5 ft, with major flooding at 12 ft. The highest crest on record was 12.22 ft on Thu, Jun 12, 1997.

Streamflow outlook

NOAA National Water Model forecast, issued 15 hours ago. The NWM models discharge for every river reach in the country, including the many gauges the National Weather Service does not forecast individually. It is a model, not an official NWS river forecast, and it predicts flow rather than water level.

Flood stages at this gauge

CategoryStageCurrent distance
Action10 ft7.0 ft below
Minor flood10.5 ft7.5 ft below
Moderate flood11 ft8.0 ft below
Major flood12 ft9.0 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

StageDate
12.22 ft1997-06-12
11.77 ft1948-06-06
11.53 ft2011-06-15
11.32 ft1974-06-18
11.22 ft1996-06-11

Nearby gauges

GaugeDistanceCounty
Gallatin River at Logan MT18.0 miGallatin County
Jefferson River near Three Forks MT19.1 miBroadwater County
Boulder River near Boulder, MT32.4 miJefferson County
Willow Creek near Harrison MT33.0 miMadison County
East Gallatin River below Bridger C near Bozeman MT33.6 miGallatin County
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast