What is the current flow on South Fork Tolt River?

South Fork Tolt River was running 72 cubic feet per second as of Aug 1, 2026, 6:00 PM UTC, measured at USGS gauge 12148300. 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 South Fork Tolt River?

55°F (12.8°C) as of Aug 1, 2026, 6:30 PM UTC, at USGS gauge 12147600. South Fork Tolt 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.

South Fork Tolt River

Washington. Streamflow and water-temperature readings from USGS gauges. Running 72 cfs as of Aug 1, 2026, 6:00 PM UTC.

Latest Reading

cubic feet / second

55°F

water temperature (12.8°C)

USGS gauges

Flow measured Aug 1, 2026, 6:00 PM UTC at gauge 12148300. Temperature measured Aug 1, 2026, 6:30 PM UTC at gauge 12147600. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on South Fork Tolt River

Gauge	Station	Water temp?
12147600	SOUTH FORK TOLT RIVER NEAR INDEX, WA	Yes
12148000	SOUTH FORK TOLT RIVER NEAR CARNATION, WA	Yes
12148300	SF TOLT RIVER BL REGULATING BASIN NR CARNATION, WA	Yes

Fly fishing rivers →Washington trout water →Washington lakes →

Conditions: USGS NWIS (public domain).