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681-acre lake in Ontario. The lake tops out around 62 ft. The depth data here comes from the Ontario MNRF survey of 1980 (a transect sounding survey). Here is how the season plays out for each species, straight from the data behind the map.
Early season brook trout use the shallows, holding in 2 to 15 ft. Summer is a 10 to 30 ft game here, winter a 3 to 20 ft one. The chart's best answer is Main-lake point — point, 1 ft, prime for spring. Best bite is 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.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (1 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (34 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (1 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow feeding flat (19 ft) | Small jigging spoon, Tungsten jig + plastic |
When the water first warms, lake trout slide up into 10 to 40 ft. Summer is a 19 to 62 ft game here, winter a 16 to 62 ft one. Start at Deep basin. It's a deep basin holding about 62 ft of water and rates prime come summer. The feeding windows run early morning. Keep a white tube jig (deep) or a magnum spoon on downrigger rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Break off the point (34 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 19 to 62 ft | dawn | Deep basin (62 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Break off the point (34 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 16 to 62 ft | dawn | Deep basin (62 ft) | White tube jig, Airplane jig |
Spring rainbow trout on Blackstone Harbour hold shallow, usually 5 to 20 ft. They move out to 8 to 30 ft in summer and finish the year down in 8 to 40 ft. Put Break off the point first on the milk run — a drop-off near 34 ft that grades prime for winter. The feeding windows run early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (1 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (34 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Break off the point (34 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 8 to 40 ft | dawn | Break off the point (34 ft) | Jigging spoon, Tube jig (white) |
In spring, brown trout run shallow here, mostly 3 to 25 ft. Summer pushes them deeper, 25 to 60 ft, and winter fish settle into 5 to 35 ft. Break off the point is the standout, a drop-off at roughly 34 ft, rated prime for summer brown trout. Time it for after dark and early morning. You won't need more than a spoon at the thermocline or a deep stickbait (night) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 25 ft | dawn & dusk | Main-lake point (1 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Summer | 25 to 60 ft | night & dawn | Break off the point (34 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Fall | 5 to 30 ft | dusk & dawn | Main-lake point (1 ft) | Jerkbait over gravel, Casting spoon |
| Winter | 5 to 35 ft | dawn | Break off the point (34 ft) | Jigging spoon, Small stickbait (slow) |
Spring landlocked salmon on Blackstone Harbour hold shallow, usually 1 to 15 ft. They move out to 25 to 60 ft in summer and finish the year down in 10 to 40 ft. Put Deep basin first on the milk run — a deep basin near 62 ft that grades prime for summer. The feeding windows run early morning and the evening. The summer box starts with a dodger + streamer down deep or a thin spoon on lead core.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 15 ft | dawn & dusk | Main-lake point (1 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Summer | 25 to 60 ft | dawn & dusk | Deep basin (62 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Fall | 5 to 30 ft | dawn & dusk | Main-lake point (1 ft) | Casting spoon at the mouths, Streamers |
| Winter | 10 to 40 ft | dawn | Break off the point (34 ft) | Small jigging spoon, Swedish pimple + smelt |
Come spring, look for chinook salmon tight to the bank in 5 to 40 ft. They move out to 19 to 62 ft in summer and finish the year down in 19 to 62 ft. If you only fish one area, make it Deep basin: a deep basin around 62 ft that scores prime in summer. Best bite is early morning and the evening. A flasher + fly (green/white) or a magnum spoon on downrigger is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 40 ft | dawn & dusk | Break off the point (34 ft) | Trolled spoon (orange/gold), Stickbait off planer boards |
| Summer | 19 to 62 ft | dawn & dusk | Deep basin (62 ft) | Flasher + fly (green/white), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dawn & dusk | Break off the point (34 ft) | J-plug (glow), Flasher + fly |
| Winter | 19 to 62 ft | midday | Deep basin (62 ft) | Small spoon on a slow troll, Stickbait deep |
Blackstone Harbour also holds coho salmon (19 to 62 ft in summer), lake whitefish (19 to 62 ft in summer), cisco (lake herring) (19 to 62 ft in summer), walleye (15 to 35 ft in summer), sauger (10 to 30 ft in summer), yellow perch (10 to 30 ft in summer), northern pike (8 to 20 ft in summer), muskellunge (8 to 25 ft in summer), smallmouth bass (10 to 30 ft in summer), largemouth bass (8 to 20 ft in summer), rock bass (5 to 20 ft in summer), white bass (8 to 25 ft in summer), white perch (15 to 40 ft in summer), crappie (10 to 25 ft in summer), bluegill (4 to 15 ft in summer), pumpkinseed (2 to 10 ft in summer), brown bullhead (3 to 12 ft in summer), channel catfish (8 to 25 ft in summer), burbot (19 to 62 ft in summer), freshwater drum (8 to 30 ft in summer), common carp (3 to 15 ft in summer), lake sturgeon (15 to 40 ft in summer), longnose gar (1 to 12 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Blackstone Harbour carries 8 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 62 ft down.
Access data: Land Information Ontario — Fishing Access Point. 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 Blackstone Harbour specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Blackstone Harbour is about 62 ft (19 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1980 (a transect sounding survey).
Anglers target brook trout, lake trout, rainbow trout, brown trout, landlocked salmon, chinook salmon, coho salmon, lake whitefish, cisco (lake herring), walleye, sauger, yellow perch, northern pike, muskellunge, smallmouth bass, largemouth bass, rock bass, white bass, white perch, crappie, bluegill, pumpkinseed, brown bullhead, channel catfish, burbot, freshwater drum, common carp, lake sturgeon, longnose gar on Blackstone Harbour.
Deep basin is the top-rated area: a deep basin in about 62 ft of water that rates prime for lake trout in summer. Open the map above to see every rated 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 Blackstone Harbour 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.
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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.