Thompson River near Thompson Falls MT
Thompson River MT USGS
Thompson River near Thompson Falls MT (12389500) is a real-time streamflow monitoring station on the Thompson River in MT, operated by the U.S. Geological Survey. Riverbot tracks its streamflow and alerts anglers the moment flow and temperature hit their fishing window. 19 fish species are associated with this station in public fish records.
- USGS site number
- 12389500
- Operated by
- U.S. Geological Survey
- State
- MT
- Coordinates
- 47.5919, -115.2295
Live conditions & history
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Fishing regulations
Western District zone defaultDefault area rules for fish in the public records above. A grey row means the release has no canonical regulation match for that species.
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Brook Trout Open · Harvest allowed within limits Mar 1 – Feb 28 Details
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Mar 1 – Feb 28
- Daily limit
- 20
Official rule · retrieved Aug 2, 2026
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Cutthroat Trout Open · Harvest allowed within limits Mar 1 – Feb 28 Details
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Mar 1 – Feb 28
- Daily limit
- 3
- Size rule
- no size limit
Official rule · retrieved Aug 2, 2026
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Largemouth Bass Open · Harvest allowed within limits Mar 1 – Feb 28 Details
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Mar 1 – Feb 28
- Daily limit
- 5
- Size rule
- only 1 greater than 12 inches
Official rule · retrieved Aug 2, 2026
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Northern Pike Open · Harvest allowed within limits Mar 1 – Feb 28 Details
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Mar 1 – Feb 28
- Daily limit
- 15
Official rule · retrieved Aug 2, 2026
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Smallmouth Bass Open · Harvest allowed within limits Mar 1 – Feb 28 Details
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Mar 1 – Feb 28
- Daily limit
- 15
- Size rule
- no size limit
Official rule · retrieved Aug 2, 2026
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Walleye Open · Harvest status unknown Mar 1 – Feb 28 Details
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Mar 1 – Feb 28
Official rule · retrieved Aug 2, 2026
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Bull Trout Closed Closed all year Details
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Closed all year
- Notes
- Closed all year
Official rule · retrieved Aug 2, 2026
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Black Bullhead No season data
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Brown Trout No season data
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Largescale Sucker No season data
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Longnose Dace No season data
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Longnose Sucker No season data
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Mountain Whitefish No season data
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Northern Pikeminnow No season data
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Pumpkinseed No season data
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Rainbow Trout No season data
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Redside Shiner No season data
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Slimy Sculpin No season data
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Yellow Perch No season data
Effective Jan 1, 2026 – Sep 14, 2027 · evaluated for 2026-09-10 in America/Denver
Regulations shown are for reference only and may not reflect in-season changes. Always verify current regulations with the Montana Fishing Regulations before fishing.
Fish recorded near this station
Sampled in this watershedThompson River near Thompson Falls MT has documented fish occurrence data from USGS Presence/Absence sampling in the HUC8 watershed 17010213 containing this station. The dataset includes 19 species with recorded observations.
Species include: black bullhead (Ameiurus melas), longnose sucker (Catostomus catostomus), largescale sucker (Catostomus macrocheilus), slimy sculpin (Cottus cognatus), northern pike (Esox lucius), and 14 others.
- Black Bullhead Ameiurus melas
- Longnose Sucker Catostomus catostomus
- Largescale Sucker Catostomus macrocheilus
- Slimy Sculpin Cottus cognatus
- Northern Pike Esox lucius
- Pumpkinseed Lepomis gibbosus
- Smallmouth Bass Micropterus dolomieu
- Largemouth Bass Micropterus salmoides
- Cutthroat Trout Oncorhynchus clarkii
- Rainbow Trout Oncorhynchus mykiss
- Yellow Perch Perca flavescens
- Mountain Whitefish Prosopium williamsoni
- Northern Pikeminnow Ptychocheilus oregonensis
- Longnose Dace Rhinichthys cataractae
- Redside Shiner Richardsonius balteatus
- Brown Trout Salmo trutta
- Bull Trout Salvelinus confluentus
- Brook Trout Salvelinus fontinalis
- Walleye Sander vitreus
Where these records come from
- Evidence
- Sampled in this watershed
- Fish were sampled elsewhere in the same watershed — a provincial or federal survey nearby, not at the gauge itself.
- Records
- 19 species
- from 19 individual records
- Observed
- Apr 16, 2012 – Jun 3, 2014
- 2 dated records