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5-acre lake in Sudbury District, Ontario. The lake tops out around 37 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. Species by species, here's what the data says the year looks like.
The drawn water covers 5 acres wrapped in 0.4 miles of bank. A shoreline index of 1.4 says round and simple: fish relate to depth changes here, not shoreline features. 46% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. It sits in Sudbury District. Its nearest charted neighbour, Boys Lake, is 1 mi to the southwest.
When the water first warms, brook trout slide up into 2 to 15 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 3 to 20 ft. If you only fish one area, make it Shoreline break: a drop-off around 17 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a small spoon fished deep or a trolled lake-clear wobbler + worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (4 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Shoreline break (17 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shoreline break (17 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for rainbow trout tight to the bank in 5 to 20 ft. Expect a summer slide to 8 to 30 ft, then a winter hold in 7 to 37 ft. Start at Shoreline break. It's a drop-off holding about 17 ft of water and rates prime come winter. Prime time lands in early morning and the evening. A dodger + spoon (deep troll) or a flutter spoon is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Shoreline break (17 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Shoreline break (17 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 10 to 35 ft | dawn & dusk | Shoreline break (17 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 7 to 37 ft | dawn | Shoreline break (17 ft) | Jigging spoon, Tube jig (white) |
Structure-wise the chart holds 3 features, led in depth by Deep basin at roughly 31 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 Black Duck L. specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Black Duck L. is about 37 ft (11 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
Anglers target brook trout, rainbow trout on Black Duck L..
Shoreline break is the top-rated area: a drop-off in about 17 ft of water that rates prime for rainbow trout in winter. 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 Black Duck L. 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.
Boys Lake 1 mi · Axe Lake 1 mi · Canyon Lake 1 mi · Saw Lake 1 mi · Ivanhoe L. 9 2 mi · Ivanhoe L. 1 3 mi · Roadside Lake 3 mi · Ivanhoe L. 42 5 mi · Twin Lakes 5 mi · Ivanhoe L. 41 5 mi · Sherry Lake 6 mi · Slate Rock Lake 6 mi
See how Black Duck L. stacks up: best rainbow trout lakes in Ontario · best brook trout lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). Browse all Ontario fishing maps or see every water on DepthScout. 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.