What is the current flow on Middle Fork Flathead River?

Middle Fork Flathead River was running 1,620 cubic feet per second as of Aug 1, 2026, 5:45 PM UTC, measured at USGS gauge 12358500. 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 Middle Fork Flathead River?

59.2°F (15.1°C) as of Aug 1, 2026, 5:45 PM UTC, at USGS gauge 12358500. Middle Fork Flathead 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.

Middle Fork Flathead River

Montana. Streamflow and water-temperature readings from USGS gauges. Running 1,620 cfs as of Aug 1, 2026, 5:45 PM UTC.

Latest Reading

1,620

cubic feet / second

59.2°F

water temperature (15.1°C)

USGS gauge

Flow measured Aug 1, 2026, 5:45 PM UTC at gauge 12358500. Temperature measured Aug 1, 2026, 5:45 PM UTC at gauge 12358500. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Middle Fork Flathead River

Gauge	Station	Water temp?
12358500	M F Flathead River near West Glacier MT	Yes

Fly fishing rivers →Montana trout water →Montana lakes →

Conditions: USGS NWIS (public domain).