What is the current flow on Big Walnut Creek?

Big Walnut Creek was running 151 cubic feet per second as of Aug 1, 2026, 6:00 PM UTC, measured at USGS gauge 03229500. 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 Big Walnut Creek?

71.8°F (22.1°C) as of Aug 1, 2026, 5:00 PM UTC, at USGS gauge 03228300. Big Walnut Creek 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.

Big Walnut Creek

Ohio. Streamflow and water-temperature readings from USGS gauges. Running 151 cfs as of Aug 1, 2026, 6:00 PM UTC.

Latest Reading

151

cubic feet / second

71.8°F

water temperature (22.1°C)

USGS gauges

Flow measured Aug 1, 2026, 6:00 PM UTC at gauge 03229500. Temperature measured Aug 1, 2026, 5:00 PM UTC at gauge 03228300. These are build-time snapshots, not a live feed — check the USGS gauge before relying on them.

USGS Gauges on Big Walnut Creek

Gauge	Station	Water temp?
03228300	Big Walnut Creek at Sunbury OH	Yes
03228500	Big Walnut Creek at Central College OH	—
03229500	Big Walnut Creek at Rees OH	—

Fly fishing rivers →Ohio lakes →

Conditions: USGS NWIS (public domain).