Lake depth chart
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78-acre lake in Sudbury District, Ontario. The lake tops out around 26 ft. Depth here is modeled from the true shoreline and max depth rather than surveyed; use it to plan, not to navigate. The season-by-season read for each species follows, from the map's own numbers.
The drawn water covers 77 acres wrapped in 2.1 miles of bank. A middling shoreline index (1.7) gives it some bays to work without being a maze. Roughly 60% of the water is 15 ft or less as modeled, the band where the food chain lives. The basin spans about 0.7 mi end to end and 0.4 mi across at its widest. It sits in Sudbury District. If the bite dies, Harvey L. is 1 mi to the southeast.
Spring splake on Marylyn Lake hold shallow, usually 5 to 25 ft. By summer they slide out to 8 to 26 ft, and by winter most fish are in 6 to 26 ft. The chart's best answer is Break off the point — drop-off, 12 ft, prime for summer. Prime time lands in early morning and the evening. The summer box starts with a trolled spoon at the thermocline or a white tube jig (deep).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Main-lake point (8 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 8 to 26 ft | dawn & dusk | Break off the point (12 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 7 to 26 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait |
| Winter | 6 to 26 ft | dawn | Break off the point (12 ft) | Jigging spoon tipped with minnow head, Small white tube |
Spring puts yellow perch in skinny water — 3 to 12 ft is the zone. Warm water sends them out to 8 to 26 ft; cold water stacks them in 8 to 26 ft. Shallow bay flat is the standout, a weed flat at roughly 3 ft, rated prime for spring yellow perch. Plan around early morning in the warm months. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 8 to 26 ft | dawn | Deep basin (22 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 8 to 26 ft | midday | Deep basin (22 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 8 to 26 ft | midday & dawn | Deep basin (22 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring northern pike on Marylyn Lake hold shallow, usually 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. Put Shallow bay flat first on the milk run — a weed flat near 3 ft that grades prime for spring. The feeding windows run early morning and the evening. The summer box starts with a bucktail or a weedless spoon over cabbage.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (3 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (12 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (12 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (3 ft) | Tip-ups, Large jigging spoon |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 22 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 Marylyn Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Marylyn Lake is about 26 ft (8 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 splake, yellow perch, northern pike on Marylyn Lake.
Break off the point is the top-rated area: a drop-off in about 12 ft of water that rates prime for splake in summer. The interactive chart above rates every spot for each species and season.
For splake, 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 Marylyn 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.
Harvey L. 1 mi · De Gaulle L. 16 1 mi · Flyline Lake 1 mi · Tony Lake 2 mi · Pat L. 3 mi · Mike L. 3 mi · Nimitz L. 15 3 mi · Little Wenebegon Lake 3 mi · Unit Lake 4 mi · Elmer L. 6 mi · Least Lake 6 mi · Leatherleaf Lake 6 mi
See how Marylyn Lake stacks up: best northern pike lakes in Ontario · best yellow perch lakes in Ontario · best splake 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.