What is the current flow on Tongue River?

Tongue River was running 362 cubic feet per second as of Aug 1, 2026, 6:30 PM UTC, measured at USGS gauge 06307616. This is a build-time snapshot rather than a live reading — check the USGS gauge directly before relying on it.

What is the water temperature on Tongue River?

81°F (27.2°C) as of Aug 1, 2026, 6:15 PM UTC, at USGS gauge 06306300. Tongue River carries no state trout classification, so the trout-stress thresholds do not apply to it — this is a water temperature measurement, not a fishery judgement.

Tongue River

Montana. Streamflow and water-temperature readings from USGS gauges. Running 362 cfs as of Aug 1, 2026, 6:30 PM UTC.

Latest Reading

362

cubic feet / second

81°F

water temperature (27.2°C)

USGS gauges

Flow measured Aug 1, 2026, 6:30 PM UTC at gauge 06307616. Temperature measured Aug 1, 2026, 6:15 PM UTC at gauge 06306300. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Tongue River

Gauge	Station	Water temp?
06306300	Tongue River at State Line nr Decker MT	Yes
06307500	Tongue River at Tongue R Dam nr Decker MT	Yes
06307616	Tongue R at Birney Day School Br nr Birney MT	—
06307662	Tongue River at Ashland, MT	—
06307830	Tongue R bl Brandenberg bridge nr Ashland MT	Yes
06308500	Tongue River at Miles City, MT	Yes

Fly fishing rivers →Montana trout water →Montana lakes →

Conditions: USGS NWIS (public domain).