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California: 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Steelhead | peak | peak | active | fair | active | peak | peak | peak | active | peak | peak | peak |
| Black crappie | peak | peak | active | active | fair | fair | active | active | active | active | active | active |
| White crappie | peak | peak | peak | active | fair | fair | active | active | active | active | active | active |
| Smallmouth bass | fair | active | active | active | active | active | peak | active | active | fair | slow | slow |
| Striped bass | fair | active | peak | peak | active | active | active | peak | active | fair | slow | slow |
| White bass | fair | active | peak | active | active | active | peak | active | active | fair | slow | slow |
| Largemouth bass | active | active | active | active | active | active | fair | fair | fair | fair | fair | active |
| Rainbow trout | fair | active | peak | peak | active | active | active | active | slow | slow | slow | slow |
| Bluegill | slow | slow | active | peak | peak | peak | active | fair | slow | slow | slow | slow |
| Carp | slow | slow | active | peak | peak | peak | active | fair | slow | slow | slow | slow |
| Chinook salmon | slow | slow | slow | active | peak | peak | peak | active | fair | slow | slow | slow |
| Cutthroat trout | fair | active | peak | active | active | fair | active | fair | fair | fair | slow | slow |
| Spotted bass | slow | slow | active | peak | peak | peak | active | fair | slow | slow | slow | slow |
| Blue catfish | slow | slow | fair | active | peak | peak | active | fair | slow | slow | slow | slow |
| Brook trout | fair | active | peak | peak | active | fair | fair | fair | fair | slow | slow | slow |
| Channel catfish | slow | slow | fair | active | peak | peak | active | fair | slow | slow | slow | slow |
| Coho salmon | slow | slow | slow | slow | fair | active | peak | peak | peak | fair | slow | slow |
| Flathead catfish | slow | slow | fair | active | peak | peak | active | fair | slow | slow | slow | slow |
Cogswell Reservoir (California) — one of the area's fishing spots. About 50 ha in area. Close by — Pasadena, El Monte and West Covina. A smart bite calendar — moon phase, atmospheric pressure, and weather combined into an hourly fish-activity forecast for the coming days.
Nearest towns and cities
Other nearby places to fish
Other nearby waters
The shoreline is heavily indented — bays, points and spits. Look for largemouth bass at the mouths of the bays and on the drop-offs behind the points. Larger than 8 of the 11 waters nearby.
The wind builds its wave along the west — east axis — 2 mi of open water; along north — south there is only 0.7 mi. When it runs down the main axis, the calm water sits against the bank it blows from, while the wave and the silt go to the far one — and the fish follow them there to feed.
Wednesday, October 21
Look for drop-offs and gaps in the weeds, retrieve slowly, lingering over promising spots.
Cogswell Reservoir — Wednesday, October 21
The bite is strong — fish are active. Pressure is dropping — this usually boosts the bite. Peak 06:00–09:00 and 19:00–20:00.
The computed water temperature is around 67 °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 dropping 0.09 inHg over the day — fish are usually more active ahead of a weather change.
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
Clear · feels like +63°
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 fieldquiet, Kp 3.7
Kp index — NOAA forecast. 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?Look for drop-offs and gaps in the weeds, retrieve slowly, lingering over promising spots.
Cogswell Reservoir — Wednesday, October 21
The bite is strong — fish are active. Pressure is dropping — this usually boosts the bite. Peak 06:00–09:00 and 19:00–20:00.