What is the current flow on Illinois River?

Illinois River was running 158 cubic feet per second as of Aug 1, 2026, 5:45 PM UTC, measured at USGS gauge 14378200. 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 Illinois River?

73.6°F (23.1°C) as of Aug 1, 2026, 5:45 PM UTC, at USGS gauge 14377100. Illinois 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.

Illinois River

Oregon. Streamflow and water-temperature readings from USGS gauges. Running 158 cfs as of Aug 1, 2026, 5:45 PM UTC.

Latest Reading

158

cubic feet / second

73.6°F

water temperature (23.1°C)

USGS gauges

Flow measured Aug 1, 2026, 5:45 PM UTC at gauge 14378200. Temperature measured Aug 1, 2026, 5:45 PM UTC at gauge 14377100. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Illinois River

Gauge	Station	Water temp?
14377100	ILLINOIS RIVER NEAR KERBY, OR	Yes
14378200	ILLINOIS RIVER NEAR AGNESS, OR	Yes

Fly fishing rivers →Oregon lakes →

Conditions: USGS NWIS (public domain).