What is the current flow on San Juan River?

San Juan River was running 854 cubic feet per second as of Aug 1, 2026, 6:30 PM UTC, measured at USGS gauge 09379700. 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 San Juan River?

80.8°F (27.1°C) as of Aug 1, 2026, 6:30 PM UTC, at USGS gauge 09379500. San Juan 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.

San Juan River

Utah. Streamflow and water-temperature readings from USGS gauges. Running 854 cfs as of Aug 1, 2026, 6:30 PM UTC.

Latest Reading

854

cubic feet / second

80.8°F

water temperature (27.1°C)

USGS gauges

Flow measured Aug 1, 2026, 6:30 PM UTC at gauge 09379700. Temperature measured Aug 1, 2026, 6:30 PM UTC at gauge 09379500. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on San Juan River

Gauge	Station	Water temp?
09379500	SAN JUAN RIVER NEAR BLUFF, UT	Yes
09379700	SAN JUAN R BL PIUTE FARMS WASH NR MONUMENT VLY, UT	—

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Conditions: USGS NWIS (public domain).