Lake depth chart
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Shared by DepthScout anglers. Exact spots stay private, always.
254,592-acre section. The Bruce Peninsula's Georgian Bay shore from Lion's Head to Tobermory and Cabot Head: clear, deep lake-trout and whitefish water with stocked splake around the harbours. The lake tops out around 567 ft. The depth chart is built from real NOAA hydrographic survey soundings, so the humps, channels and drop-offs you see are measured, not guessed. The rest of this page walks each species through its year, using the map's own scoring.
The drawn outline gives you 116.1 miles of bank to pick apart. The shoreline is moderately structured (index 2) — enough points and pockets to pattern. Littoral water — the productive band under ~15 ft — makes up 3% of this chart. End to end it runs roughly 36.5 mi, about 19.8 mi across. You'll find it in Bruce County. The nearest mapped water is Crane Lake, 2 mi to the north.
Spring puts lake trout in skinny water — 10 to 40 ft is the zone. Warm water sends them out to 50 to 120 ft; cold water stacks them in 20 to 80 ft. Offshore hump is the standout, an offshore hump at roughly 66 ft, rated prime for summer lake trout. Plan around early morning in the warm months. A white tube jig (deep) or a magnum spoon on downrigger covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Shoreline point (29 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 50 to 120 ft | dawn | Offshore hump (66 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Offshore hump (39 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Offshore hump (66 ft) | White tube jig, Airplane jig |
Early season lake whitefish use the shallows, holding in 15 to 45 ft. Summer is a 40 to 90 ft game here, winter a 25 to 70 ft one. The chart's best answer is Offshore hump — offshore hump, 66 ft, prime for summer. Best bite is early morning. Tie on a blade bait vertical or a small jigging spoon and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Offshore hump (39 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 40 to 90 ft | dawn | Offshore hump (66 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Shoreline point (29 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 25 to 70 ft | midday & dawn | Offshore hump (66 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
In spring, splake run shallow here, mostly 5 to 25 ft. Midsummer fish sit out in 25 to 60 ft before dropping to 10 to 45 ft for winter. Summer splake concentrate at Deep break, a prime-rated drop-off around 51 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a trolled spoon at the thermocline or a white tube jig (deep) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Shoreline point (4 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 25 to 60 ft | dawn & dusk | Deep break (51 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 10 to 35 ft | dawn & dusk | Shoreline point (29 ft) | Casting spoon, Jerkbait |
| Winter | 10 to 45 ft | dawn | Offshore hump (39 ft) | Jigging spoon tipped with minnow head, Small white tube |
In spring, chinook salmon run shallow here, mostly 5 to 40 ft. Midsummer fish sit out in 50 to 120 ft before dropping to 30 to 90 ft for winter. Summer chinook salmon concentrate at Deep break, a prime-rated drop-off around 82 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a flasher + fly (green/white) or a magnum spoon on downrigger most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 40 ft | dawn & dusk | Shoreline point (29 ft) | Trolled spoon (orange/gold), Stickbait off planer boards |
| Summer | 50 to 120 ft | dawn & dusk | Deep break (82 ft) | Flasher + fly (green/white), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dawn & dusk | Deep break (51 ft) | J-plug (glow), Flasher + fly |
| Winter | 30 to 90 ft | midday | Deep break (82 ft) | Small spoon on a slow troll, Stickbait deep |
Spring puts rainbow trout in skinny water — 5 to 20 ft is the zone. As the season builds they drop to 8 to 30 ft, wintering in 8 to 40 ft. Fall rainbow trout concentrate at Shoreline point, a prime-rated point around 29 ft. Warm-month bites cluster around early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shoreline point (4 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shoreline point (29 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Shoreline point (29 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Deep break (51 ft) | Jigging spoon, Tube jig (white) |
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. Warm water sends them out to 10 to 30 ft; cold water stacks them in 20 to 45 ft. Top water on the chart: Shoreline point, a point in the 4 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a drop shot (goby/minnow) or a ned rig until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Shoreline point (4 ft) | Ned rig, Tube jig |
| Summer | 10 to 30 ft | dawn & dusk | Shoreline point (29 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 8 to 25 ft | midday & dawn | Shoreline point (4 ft) | Jerkbait, Blade bait |
| Winter | 20 to 45 ft | midday | Offshore hump (39 ft) | Blade bait, Hair jig |
Georgian Bay - Bruce Peninsula & Tobermory also holds northern pike (8 to 20 ft in summer), yellow perch (10 to 30 ft in summer). Pick any of them on the map above for rated spots and bait picks.
30 pieces of structure are mapped here — Deep break, around 183 ft, is the deepest of them.
Access data: Geospatial Ontario - Fishing Access Points. Confirm conditions and fees locally before you launch.
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 Georgian Bay - Bruce Peninsula & Tobermory specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Georgian Bay - Bruce Peninsula & Tobermory is about 567 ft (173 m) deep at its deepest point. The depth chart here comes from real NOAA hydrographic surveys, so the contours reflect measured depths.
Anglers target lake trout, lake whitefish, splake, chinook salmon, rainbow trout, smallmouth bass, northern pike, yellow perch on Georgian Bay - Bruce Peninsula & Tobermory.
Deep break is the top-rated area: a drop-off in about 51 ft of water that rates prime for splake in summer. Every other rated spot, per species and season, is on the map above.
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 Georgian Bay - Bruce Peninsula & Tobermory 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.
Crane Lake 2 mi · Warder Lake 3 mi · Miller Lake 3 mi · Britain Lake 4 mi · Marley Lake 4 mi · George Lake 4 mi · Lower Andrew Lake 5 mi · Otter Lake 5 mi · Upper Andrew Lake 5 mi · Scugog Lake 5 mi · Quenlin Lake 5 mi · Emmett Lake 6 mi
See how Georgian Bay - Bruce Peninsula & Tobermory stacks up: best smallmouth bass lakes in Ontario · best northern pike lakes in Ontario · best rainbow trout lakes in Ontario · best yellow perch lakes in Ontario
More water nearby: Bruce County fishing maps (60 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: NOAA hydrographic surveys. 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.