Prospect Creek at Thompson Falls MT

Sanders County, Montana · USGS gauge 12390700 · NWS PRCM8 · Montana river levels

Nearby: river levels near Thompson Falls

Is Prospect Creek at Thompson Falls MT flooding right now?

Prospect Creek at Thompson Falls MT measured 0.59 ft on 2026-09-11 01:15:00 UTC. That observation was 6.9 ft below its 7.5 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height
0.59 ft
as of 50 min ago
Streamflow
48 cfs
data refreshed 3 min ago

Minor flooding here begins at 7.5 ft, with major flooding at 9 ft. The highest crest on record was 9.86 ft on Wed, Jan 16, 1974.

Flood forecast

NWS forecast, issued 10 hours ago. Forecasts are issued for select river points and update through the day.

Flood stages at this gauge

CategoryStageCurrent distance
Action6.5 ft5.9 ft below
Minor flood7.5 ft6.9 ft below
Moderate flood8 ft7.4 ft below
Major flood9 ft8.4 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
9.86 ft1974-01-16
9.54 ft1996-02-09
8.1 ft2017-03-19
7.6 ft1971-05-13
7.6 ft1956-05-21

Nearby gauges

GaugeDistanceCounty
Thompson River near Thompson Falls MT5.9 miSanders County
Sf Coeur D Alene River above Deadman Gulch near Mullan ID20.7 miShoshone County
St. Regis River near St. Regis, MT22.7 miMineral County
Clark Fork at St. Regis MT23.3 miMineral County
Clark Fork near Plains MT25.6 miSanders 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