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Sage Hen Reservoir (Idaho) — a spot well known among anglers. About 93 ha in area. See when the bite is best: hourly fish activity for the days ahead, computed from the weather, pressure, and season.
Other nearby waters
The shoreline is moderately indented: bays and points alternate with even stretches.
The wind builds its wave along the north-east — south-west axis — 1 mi of open water; along north-west — south-east 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.
Idaho: 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 |
Friday, October 23
Look for drop-offs and gaps in the weeds, retrieve slowly, lingering over promising spots. The water's cold — fish it more delicately and slowly.
ThunderstormThunderstorm possible: put the rod down and leave open shoreline at the first rumble.
Sage Hen Reservoir — Friday, October 23
The bite is moderate — fish feed in short bursts. A thunderstorm is possible: activity rises before the front and drops after. Peak 09:00–10:00 and 18:00–20:00.
The computed water temperature is around 40 °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 rising 0.56 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.
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
Snow · feels like +27°
The day is 3 min shorter than yesterday.
Sunshine hours count direct sun only — cloud cover cuts it, so it is shorter than daylight.
Geomagnetic fieldquiet, Kp 3
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?| active |
| fair |
| active |
| peak |
| peak |
| peak |
| active |
| peak |
| peak |
| Black crappie | active | active | active | peak | peak | active | active | fair | fair | active | active | active |
|---|
| Lake trout | peak | peak | peak | peak | active | active | fair | slow | slow | active | peak | active |
|---|
| Brook trout | slow | slow | slow | slow | active | peak | peak | active | active | peak | active | fair |
|---|
| Cutthroat trout | slow | slow | slow | fair | active | peak | active | active | active | peak | active | fair |
|---|
| Rainbow trout | slow | slow | slow | fair | active | peak | peak | active | active | active | active | slow |
|---|
| Whitefish | slow | slow | slow | fair | active | peak | peak | active | active | peak | peak | fair |
|---|
| Brown trout | slow | slow | slow | slow | active | peak | peak | peak | active | active | fair | slow |
|---|
| Walleye | slow | slow | slow | slow | fair | peak | active | active | active | active | active | fair |
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| Chinook salmon | slow | slow | slow | slow | active | peak | peak | peak | active | fair | slow | slow |
|---|
| Largemouth bass | slow | slow | slow | slow | fair | peak | peak | peak | peak | peak | fair | fair |
|---|
| Smallmouth bass | slow | slow | slow | slow | fair | active | active | active | active | active | fair | fair |
|---|
| Yellow perch | slow | slow | slow | slow | fair | active | active | active | active | active | fair | fair |
|---|
| Burbot | active | active | fair | fair | slow | slow | slow | slow | slow | slow | peak | peak |
|---|
| Bluegill | slow | slow | slow | slow | slow | fair | active | peak | active | fair | slow | slow |
|---|
| Carp | slow | slow | slow | slow | slow | fair | peak | peak | active | fair | slow | slow |
|---|
| Channel catfish | slow | slow | slow | slow | slow | fair | active | active | active | fair | slow | slow |
|---|
Look for drop-offs and gaps in the weeds, retrieve slowly, lingering over promising spots. The water's cold — fish it more delicately and slowly.
ThunderstormThunderstorm possible: put the rod down and leave open shoreline at the first rumble.
Sage Hen Reservoir — Friday, October 23
The bite is moderate — fish feed in short bursts. A thunderstorm is possible: activity rises before the front and drops after. Peak 09:00–10:00 and 18:00–20:00.