Lake depth chart
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Reopens January 1 · FMZ 8 or 10 or 11 zone-wide season. Lake-specific exceptions and sanctuaries can differ — check the official summary before you go.
Recent public catches load as you reach this section.
8-acre lake in Sudbury District, Ontario. The lake tops out around 22 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey). Here is how the season plays out for each species, straight from the data behind the map.
Traced from the shoreline, Boys Lake runs 7 acres with 0.6 miles of edge. The shoreline is moderately structured (index 1.5) — enough points and pockets to pattern. About 91% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. The water lies in Sudbury District. Closest neighbour on DepthScout: Black Duck L., 1 mi northeast of here.
These fish are listed in an exact-water agency record as forage or ecological context. They are not target-species profiles and do not affect DepthScout's Prime, Good, or Fair spot ratings.
Official Ontario MNRF Fish ON-Line record. The listing documents source-recorded presence, not present abundance or guaranteed catchability.
Spring puts brook trout in skinny water — 2 to 15 ft is the zone. Warm water sends them out to 7 to 22 ft; cold water stacks them in 3 to 20 ft. Deep basin is the standout, a deep basin at roughly 18 ft, rated prime for summer brook trout. Plan around early morning and the evening in the warm months. A small spoon fished deep or a trolled lake-clear wobbler + worm covers the summer program.
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 (8 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 7 to 22 ft chart-limited; documented 10 to 30 ft | dawn & dusk | Deep basin (18 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (8 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Deep basin (18 ft) | Small jigging spoon, Tungsten jig + plastic |
The spring pattern is a shallow one: northern pike in 2 to 8 ft. As the season builds they drop to 8 to 20 ft, wintering in 5 to 15 ft. Top water on the chart: Break off the point, a drop-off in the 14 ft range, prime in fall. Time it for early morning and the evening. Summer baits: a bucktail or a weedless spoon over cabbage gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | open water | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (14 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (14 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Main-lake point (8 ft) | Tip-ups, Large jigging spoon |
In spring, burbot run shallow here, mostly 7 to 22 ft. Summer keeps them at 7 to 22 ft, and they winter in 6 to 22 ft. Deep basin is the standout, a deep basin at roughly 18 ft, rated prime for spring burbot. Time it for after dark and midday. You won't need more than a heavy jig + cut bait most summer days.
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 | 7 to 22 ft chart-limited; documented 25 to 70 ft | night & dusk | Deep basin (18 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 7 to 22 ft chart-limited; documented 50 to 120 ft | night & midday | Deep basin (18 ft) | Heavy jig + cut bait |
| Fall | 7 to 22 ft chart-limited; documented 30 to 80 ft | night & dusk | Deep basin (18 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 6 to 22 ft chart-limited; documented 15 to 60 ft | night & dusk | Deep basin (18 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
3 pieces of structure are mapped here — Deep basin, around 18 ft, is the deepest of them.
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 Boys Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Boys Lake is about 22 ft (7 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey).
Anglers target brook trout, northern pike, burbot on Boys Lake.
Deep basin is the top-rated area: a deep basin in about 18 ft of water that rates prime for burbot in spring. 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 Boys 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.
Black Duck L. 1 mi · Axe Lake 1 mi · Saw Lake 1 mi · Canyon Lake 1 mi · Ivanhoe L. 9 1 mi · Ivanhoe L. 1 3 mi · Roadside Lake 4 mi · Ivanhoe L. 42 4 mi · Ivanhoe L. 41 4 mi · Twin Lakes 5 mi · Sherry Lake 6 mi · Ivanhoe L. 50 6 mi
See how Boys Lake stacks up: best northern pike lakes in Ontario · best brook trout lakes in Ontario · best burbot lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). Browse all Ontario fishing maps. See every water on DepthScout. Depth data: Ontario Ministry of Natural Resources and Forestry, Lake survey data (Open Government Licence – Ontario). 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.