Tongue River at State Line nr Decker MT

Tongue River MT USGS

Tongue River at State Line nr Decker MT (06306300) is a real-time streamflow monitoring station on the Tongue 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. 12 fish species are associated with this station in public fish records.

USGS site number
06306300
Operated by
U.S. Geological Survey
State
MT
Coordinates
45.0091, -106.8359

Live conditions & history

Create a free account to see live flow, temperature, and recent history for this station

Riverbot reads this gauge every 15 minutes and emails you when the river hits the flow and temperature you fish. Sign up free to unlock the live chart and set your window.

Create a free account Log in

7-day weather

Create a free account to see the 7-day weather forecast for this station

Wind, rain, and sky conditions for the week ahead at this gauge's coordinates — sign up free to plan your next trip around it.

Create a free account Log in

Fishing regulations

Eastern District zone default

Default area rules for fish in the public records above. A grey row means the release has no canonical regulation match for that species.

Eastern District zone default only. Water-specific, national-park, sanctuary, licence, and in-season exceptions may apply.

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 at this station's reach

Tongue River at State Line nr Decker MT has documented fish occurrence data from USGS Presence/Absence sampling at this monitoring station's reach (COMID 5334435). The dataset includes 12 species with recorded observations.

Species include: longnose sucker (Catostomus catostomus), white sucker (Catostomus commersonii), channel catfish (Ictalurus punctatus), smallmouth bass (Micropterus dolomieu), shorthead redhorse (Moxostoma macrolepidotum), and 7 others.

Where these records come from

Evidence
Sampled at this station's reach
Fish were sampled directly on the river reach this gauge sits on, so these species were recorded at this spot rather than inferred.
Records
12 species
from 12 individual records
Observed
Jun 24, 2013 – Jun 24, 2013
12 dated records

Sources