What is the current flow on Ruby River?

Ruby River was running 253 cubic feet per second as of Aug 1, 2026, 5:45 PM UTC, measured at USGS gauge 06020600. 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 Ruby River?

69.8°F (21°C) as of Aug 1, 2026, 5:45 PM UTC, at USGS gauge 06023000. Ruby 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.

Ruby River

Montana. Streamflow and water-temperature readings from USGS gauges. Running 253 cfs as of Aug 1, 2026, 5:45 PM UTC.

Latest Reading

253

cubic feet / second

69.8°F

water temperature (21°C)

USGS gauges

Flow measured Aug 1, 2026, 5:45 PM UTC at gauge 06020600. Temperature measured Aug 1, 2026, 5:45 PM UTC at gauge 06023000. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Ruby River

Gauge	Station	Water temp?
06019500	Ruby River above reservoir near Alder, MT	—
06020600	Ruby River below reservoir near Alder, MT	—
06023000	Ruby River near Twin Bridges MT	Yes

Fly fishing rivers →Montana trout water →Montana lakes →

Conditions: USGS NWIS (public domain).