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141-acre lake in Rainy River District, Ontario. The lake tops out around 72 ft. The depth data here comes from the Ontario MNRF survey of 1990 (a transect sounding survey). Below is the species-by-species picture, pulled from the same data the map uses.
On the chart, Little Brown Lake draws 141 acres inside 3.9 miles of shoreline — 2 islands included. The 2.3 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. 27% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. The basin spans about 0.8 mi end to end and 0.6 mi across at its widest. The water lies in Rainy River District. The nearest mapped water is Jim Lake, 2 mi to the west.
In spring, lake trout run shallow here, mostly 10 to 40 ft. Summer pushes them deeper, 22 to 72 ft, and winter fish settle into 18 to 72 ft. Deep basin is the standout, a deep basin at roughly 71 ft, rated prime for summer lake trout. Time it for early morning. You won't need more than a white tube jig (deep) or a magnum spoon on downrigger most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Secondary point (23 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 22 to 72 ft | dawn | Deep basin (71 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Secondary point (23 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 18 to 72 ft | dawn | Deep basin (71 ft) | White tube jig, Airplane jig |
When the water first warms, yellow perch slide up into 3 to 12 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 15 to 35 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 8 ft that scores prime in spring. In summer the feeding windows fall in early morning. Keep a drop-shot micro plastics or a small spoon tipped with worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (8 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (23 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (23 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Break off the point (23 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 71 ft.
Season dates, license requirements, and size and bag limits for Ontario waters are set by the Ontario fishing regulations (FMZ summary) — and special regulations can apply to Little Brown Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Little Brown Lake is about 72 ft (22 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1990 (a transect sounding survey).
Anglers target lake trout, yellow perch on Little Brown Lake.
Deep basin is the top-rated area: a deep basin in about 71 ft of water that rates prime for lake trout in summer. Scroll up to the map for the complete spot list by species and season.
For lake trout, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Little Brown Lake is regulated by the Ontario fishing regulations (FMZ summary). Check the official Ontario regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Jim Lake 2 mi · Kemuel Lake 3 mi · Abbess Lake 5 mi · Olympia Lake 5 mi · Nym Lake 5 mi · Caribus Lake 5 mi · Owl Lake 6 mi · Plateau Lake 7 mi · Lerome Lake 7 mi · Apungsisagen Lake 8 mi · Highland Lake 8 mi · Narrow Lake 8 mi
See how Little Brown Lake stacks up: best yellow perch lakes in Ontario · best lake trout lakes in Ontario
More water nearby: Rainy River District fishing maps (257 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.