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Lake Modesto Reservoir (California) — a spot well known among anglers. About 9.4 km² in area. 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.
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. The islands add structure: drop-offs around their perimeter and channels between them and the bank.
The longest fetch is 4 mi along the north-west — south-east axis: wind along it builds a wave on the open water and pushes silt and food towards the lee bank.
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 |
Look for drop-offs and gaps in the weeds, retrieve slowly, lingering over promising spots.
Modesto Reservoir — Tuesday, October 20
The bite is strong — fish are active. Pressure is dropping — this usually boosts the bite. Peak 07:00–09:00 and 18:00–19:00.
The computed water temperature is around 68 °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 0.06 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 +66°
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 fieldG1 geomagnetic storm, Kp 4.7
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?Blue check: this species appears as a catch in reports for this waterbody.
Look for drop-offs and gaps in the weeds, retrieve slowly, lingering over promising spots.
Modesto Reservoir — Tuesday, October 20
The bite is strong — fish are active. Pressure is dropping — this usually boosts the bite. Peak 07:00–09:00 and 18:00–19:00.
Biting
Fish in 1 of 1 report · Mostly Largemouth bass
Anglers have logged 1 fishing report here. Most commonly caught: Largemouth bass. Peak season: June.