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Colorado: the months when each species peaks and when it goes quiet. The current month is outlined.
| Fish | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| White crappie | active | peak | peak | peak | active | active | fair | fair | active | active | active | active |
| Black crappie | active | peak | peak | peak | active | fair | fair | fair | active | active | active | active |
| Lake trout | peak | peak | peak | active | active | fair | slow | fair | active | peak | active | peak |
| Brook trout | slow | slow | fair | active | peak | active | active | active | peak | active | fair | slow |
| Cutthroat trout | slow | slow | fair | active | peak | active | active | active | peak | peak | fair | slow |
| Pike | fair | fair | fair | fair | fair | active | active | active | peak | peak | active | active |
| Walleye | slow | slow | fair | active | peak | active | active | peak | peak | peak | fair | slow |
| White bass | slow | slow | slow | active | active | active | active | peak | peak | active | fair | slow |
| Whitefish | slow | slow | fair | active | peak | active | active | active | peak | active | fair | slow |
| Yellow perch | slow | slow | fair | active | peak | active | active | peak | peak | peak | fair | slow |
| Brown trout | slow | slow | fair | active | peak | peak | peak | active | active | slow | slow | slow |
| Largemouth bass | slow | slow | fair | active | peak | peak | peak | active | active | fair | fair | slow |
| Rainbow trout | slow | slow | fair | active | peak | peak | active | active | active | fair | slow | slow |
| Smallmouth bass | slow | slow | slow | fair | active | active | active | peak | peak | active | fair | slow |
| Bluegill | slow | slow | slow | slow | active | peak | peak | peak | active | slow | slow | slow |
| Carp | slow | slow | slow | slow | active | peak | peak | peak | active | slow | slow | slow |
| Channel catfish | slow | slow | slow | slow | fair | peak | peak | peak | fair | slow | slow | slow |
First Fork Piedra River (Colorado) — a spot well known among anglers. About 12 km long. This page shows an hourly bite forecast for today and the week ahead; the algorithm factors in the weather, atmospheric pressure, and the moon phase.
Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.
First Fork Piedra River — Tuesday, October 20
The bite is strong — fish are active. Pressure is dropping — this usually boosts the bite. Peak 07:00–09:00 and 18:00–20:00.
The computed water temperature is around 56 °F — colder than the 57–75 °F comfort range for Black crappie: the fish conserves energy and takes more cautiously.
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 flat: it moves no more than 0.03 inHg over the day, so the weather isn't shifting today's bite.
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.
October is an active season for Black crappie here.
These are the same values the bite curve above was computed from. How the forecast works
Partly cloudy · feels like +58°
The day is 2 min shorter than yesterday.
Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.
Geomagnetic fieldunsettled, Kp 4
Kp index — NOAA data. Not part of the bite score: catches show no link between geomagnetic storms and the bite.
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?Work the cover — snags, weed edges, hole entrances; retrieve the lure with pauses.
First Fork Piedra River — Tuesday, October 20
The bite is strong — fish are active. Pressure is dropping — this usually boosts the bite. Peak 07:00–09:00 and 18:00–20:00.
Other nearby places to fish
The course is moderately sinuous: pools are scoured at the bends and riffles run between them. Longer than 12 of the 15 rivers nearby.