What is the current flow on Firehole River?

Firehole River was running 205 cubic feet per second as of Aug 1, 2026, 6:00 PM UTC, measured at USGS gauge 06036905. 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 Firehole River?

75.6°F (24.2°C) as of Aug 1, 2026, 6:00 PM UTC, at USGS gauge 06036905. Firehole 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.

Firehole River

Wyoming. Streamflow and water-temperature readings from USGS gauges. Running 205 cfs as of Aug 1, 2026, 6:00 PM UTC.

Latest Reading

205

cubic feet / second

75.6°F

water temperature (24.2°C)

USGS gauges

Flow measured Aug 1, 2026, 6:00 PM UTC at gauge 06036905. Temperature measured Aug 1, 2026, 6:00 PM UTC at gauge 06036905. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Firehole River

Gauge	Station	Water temp?
06036805	Firehole River at Old Faithful, YNP	Yes
06036905	Firehole River near West Yellowstone MT	Yes

Fly fishing rivers →Wyoming lakes →

Conditions: USGS NWIS (public domain).