We use cookies for analytics and advertising. Cookies necessary for the site to function are always kept. Learn more
Flat River (Michigan) — a popular fishing spot. About 114 km long. Here you'll find a bite prediction — when fish are active and which hours give the best chances, adjusted for weather and pressure.
Recorded 2 catches here. Most commonly caught: Steelhead, Smallmouth bass. Peak season: May–September.
Measured river conditions are available for Flat River: current gauge height, streamflow, and water temperature when reported by the source.
The bite is moderate — fish feed in short bursts. A thunderstorm is possible: activity rises before the front and drops after.
Best time — 06:00–08:00 (dawn bite) and 19:00–20:00 (dusk bite).
Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.
The water's turning murky — go with bright, noisy lures: small jig or minnow bait.
Pack transitional-season clothing — mornings and evenings are chilly. A thunderstorm is possible — bring a rain jacket, and pack up at the first rumble of thunder.
An average day — best chances during peak windows.
The computed water temperature is around 64 °F — inside the 57–75 °F comfort range for Black crappie, so baseline activity is high.
Black crappie works the twilight: the peaks are pinned to sunrise and sunset — their times are in the sun-and-moon card above.
Pressure is rising 0.18 inHg over the day — the bite usually settles down after a rise.
One more input — the moon's feeding windows: within their hours the score sits higher than across the rest of the day. The window times are in the “Solunar feeding periods” card below.
September is an active season for Black crappie here.
These are the same values the bite curve above was computed from. How the forecast works
Cloudy · feels like +79°
The day is 3 min shorter than yesterday.
Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.
The windows are set by the moon's transit and rise, and the forecast above already accounts for them: within these hours the bite score sits higher than across the rest of the day, while the day's overall level still comes from the catch-calibrated model.
What are solunar periods?USGS gauge FLAT RIVER AT SMYRNA, MI, 19 mi away · measured 2026-09-02 14:00 · data source · provisional data, subject to revision