Lake depth chart
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48-acre lake in Lincoln County, Montana. The lake tops out around 23 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The season-by-season read for each species follows, from the map's own numbers.
The chart traces 1.9 miles of shoreline here. That shoreline is heavily fingered (development index 2.3) — bays, points and pockets everywhere, which multiplies the fishable edge. Littoral water — the productive band under ~15 ft — makes up 78% of this chart. End to end it runs roughly 0.8 mi. It sits in Lincoln County. Blue Lake (Flathead) sits 2 mi southwest — the closest neighbouring chart.
Early season brook trout use the shallows, holding in 2 to 15 ft. Expect a summer slide to 7 to 23 ft, then a winter hold in 3 to 20 ft. Put Deep basin first on the milk run — a deep basin near 23 ft that grades prime for summer. In summer the feeding windows fall in early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (11 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 7 to 23 ft chart-limited; documented 10 to 30 ft | dawn & dusk | Deep basin (23 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (11 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (14 ft) | Small jigging spoon, Tungsten jig + plastic |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 23 ft.
Season dates, license requirements, and size and bag limits for Montana waters are set by the Montana Fish, Wildlife & Parks — and special regulations can apply to Fish Lake (Lincoln) specifically, so confirm the current rules before you fish.
Check the official Montana fishing regulations →
Fish Lake (Lincoln) is about 23 ft (7 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target brook trout on Fish Lake (Lincoln).
Deep basin is the top-rated area: a deep basin in about 23 ft of water that rates prime for brook trout in summer. The interactive chart above rates every spot for each species and season.
For brook trout, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Fish Lake (Lincoln) is regulated by the Montana Fish, Wildlife & Parks. Check the official Montana regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Blue Lake (Flathead) 2 mi · Big Fire Lake 4 mi · Dickey Lake (Lincoln) 5 mi · Upper Whitefish Lake 7 mi · Martin Lake (Lincoln) 7 mi · Murphy Lake 7 mi · Upper Martin Lake 9 mi · Chain Lake 3 10 mi · Lower Stillwater Lake 13 mi · Moose Lake 15 mi · Frank Lake 16 mi · Long Lake (Lincoln) 16 mi
See how Fish Lake (Lincoln) stacks up: best brook trout lakes in Montana
More water nearby: Lincoln County fishing maps (28 charts). Browse all Montana fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. How we build these maps. Fish here with a sonar unit that logs? Send us your depth data and we'll improve this chart, credited to you. For fishing guidance only, never navigation.