Flathead Lake fishing report, live.

updated 12:00 am

Lake trout run:

FAIR.

How we know

Confidence medium (60%): the calendar gives 60%.
Not yet confirmed: that takes 2 verified catches within 72 hours.
Typical run Oct 1 to Nov 30 (FWP Flathead Lake Fishing Guide).
Water temperature and flow are shown as evidence; they move the verdict once enough reports fit their thresholds.

Last 72 hours of reports

Reports on this water are counted for the whole lake until reaches are drawn.

Reports are shown at reach level, never spots.

Lake level: 2,891.1 to 2,891.4 ft

South half: tribal (CSKT) rules apply; a CSKT fishing license is required. CSKT 2026-27 non-member regulations; FWP 2026 p. 31
Bull trout: closed; release any caught at once. FWP 2026 Fishing Regulations, p. 23
Lake trout, north of the reservation boundary: 100 daily, 100 possession, only 1 over 36 inches, release all from 30 to 36 inches. FWP 2026 Fishing Regulations, p. 31
Westslope cutthroat trout, north of the reservation boundary: catch and release only. FWP 2026 Fishing Regulations, p. 31
Yellow perch, north of the reservation boundary: no limit, only 10 daily over 10 inches. FWP 2026 Fishing Regulations, p. 31

Rules checked Oct 11, 2026 against the FWP 2026 Fishing Regulations. They change every March 1; check the FWP regulations before you fish.

Sources: NWS, Yellow Bay MT-35 weather station (wind); USGS 12371550 (lake level); NWS; verified reports from anglers on the water.