What is the current flow on St Croix River?

St Croix River was running 2,790 cubic feet per second as of Aug 1, 2026, 6:00 PM UTC, measured at USGS gauge 05344490. 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 St Croix River?

81°F (27.2°C) as of Aug 1, 2026, 6:00 PM UTC, at USGS gauge 05340500. St Croix 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.

St Croix River

Wisconsin. Streamflow and water-temperature readings from USGS gauges. Running 2,790 cfs as of Aug 1, 2026, 6:00 PM UTC.

Latest Reading

2,790

cubic feet / second

81°F

water temperature (27.2°C)

USGS gauges

Flow measured Aug 1, 2026, 6:00 PM UTC at gauge 05344490. Temperature measured Aug 1, 2026, 6:00 PM UTC at gauge 05340500. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on St Croix River

Gauge	Station	Water temp?
05333500	ST. CROIX RIVER NEAR DANBURY, WI	Yes
05340500	ST. CROIX RIVER AT ST. CROIX FALLS, WI	Yes
05344490	ST. CROIX RIVER AT PRESCOTT, WI	—

Fly fishing rivers →Wisconsin trout water →Wisconsin lakes →

Conditions: USGS NWIS (public domain).