What is the current flow on Mill Creek?

Mill Creek was running 17 cubic feet per second as of Aug 1, 2026, 6:00 PM UTC, measured at USGS gauge 12323700. 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 Mill Creek?

63°F (17.2°C) as of Aug 1, 2026, 6:00 PM UTC, at USGS gauge 12323700. Mill Creek 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.

Mill Creek

Montana. Streamflow and water-temperature readings from USGS gauges. Running 17 cfs as of Aug 1, 2026, 6:00 PM UTC.

Latest Reading

cubic feet / second

63°F

water temperature (17.2°C)

USGS gauges

Flow measured Aug 1, 2026, 6:00 PM UTC at gauge 12323700. Temperature measured Aug 1, 2026, 6:00 PM UTC at gauge 12323700. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Mill Creek

Gauge	Station	Water temp?
12323670	Mill Creek nr Anaconda, MT	—
12323700	Mill Creek at Opportunity, MT	Yes

Fly fishing rivers →Montana trout water →Montana lakes →

Conditions: USGS NWIS (public domain).