What is the current flow on Jefferson River?

Jefferson River was running 502 cubic feet per second as of Aug 1, 2026, 6:15 PM UTC, measured at USGS gauge 06026500. 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 Jefferson River?

73.9°F (23.3°C) as of Aug 1, 2026, 6:00 PM UTC, at USGS gauge 06036650. Jefferson 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.

Jefferson River

Montana. Streamflow and water-temperature readings from USGS gauges. Running 502 cfs as of Aug 1, 2026, 6:15 PM UTC.

Latest Reading

502

cubic feet / second

73.9°F

water temperature (23.3°C)

USGS gauges

Flow measured Aug 1, 2026, 6:15 PM UTC at gauge 06026500. Temperature measured Aug 1, 2026, 6:00 PM UTC at gauge 06036650. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Jefferson River

Gauge	Station	Water temp?
06026500	Jefferson River near Twin Bridges, MT	Yes
06027600	Jefferson River at Parsons Bdg nr Silver Star, MT	Yes
06036650	Jefferson River near Three Forks MT	Yes

Fly fishing rivers →Montana trout water →Montana lakes →

Conditions: USGS NWIS (public domain).