Fishing in Flathead County, Montana

What this local map set contains

The Flathead County directory currently covers 55 lakes or reservoirs. 54 charts use measured bathymetry from a published source; 1 chart is clearly labeled as modeled. Recorded maximum depths range from 12 to 500 ft, with a median of 50 ft. Those figures describe each chart's deepest recorded or modeled point, not a safe navigation depth.

Species records are attached to 55 of 55 waters. The most frequently cataloged targets are Cutthroat Trout (37), Yellow Perch (34), Rainbow Trout (32), Northern Pike (28) and Smallmouth Bass (24). These are coverage counts, not abundance estimates or catch forecasts; open the individual map to see the evidence and seasonal context attached to that water.

Three useful maps to compare first

1. Echo Lake (Flathead): 70 ft maximum; survey-backed contours; 13 cataloged target species.
2. Lake Five (Flathead): 60 ft maximum; survey-backed contours; 13 cataloged target species.
3. Lion Lake (Flathead): 85 ft maximum; survey-backed contours; 12 cataloged target species.

Start with a survey-backed chart when exact contour shape matters most. Use a modeled chart as broad planning context, then verify depths on the water. Comparing the three examples above also shows whether this area offers one dominant basin type or genuinely different shallow, deep, lake and river options. Access is separate from map coverage: confirm launches, shore rights, closures and posted rules before making the trip.