What is the current flow on Colorado River?

Colorado River was running 8,510 cubic feet per second as of Aug 1, 2026, 6:15 PM UTC, measured at USGS gauge 09402500. 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 Colorado River?

70.9°F (21.6°C) as of Aug 1, 2026, 6:15 PM UTC, at USGS gauge 09383100. Colorado 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.

Colorado River

Arizona. Streamflow and water-temperature readings from USGS gauges. Running 8,510 cfs as of Aug 1, 2026, 6:15 PM UTC.

Latest Reading

8,510

cubic feet / second

70.9°F

water temperature (21.6°C)

USGS gauges

Flow measured Aug 1, 2026, 6:15 PM UTC at gauge 09402500. Temperature measured Aug 1, 2026, 6:15 PM UTC at gauge 09383100. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Colorado River

Gauge	Station	Water temp?
09380000	COLORADO RIVER AT LEES FERRY, AZ	Yes
09383100	COLORADO R ABV LITTLE COLORADO R NR DESERT VIEW	Yes
09402500	COLORADO RIVER NEAR GRAND CANYON, AZ	—
09404120	COLORADO R ABV NATIONAL CANYON NR SUPAI	—

Fly fishing rivers →Arizona lakes →

Conditions: USGS NWIS (public domain).