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193-acre lake in Sudbury District, Ontario. The lake tops out around 40 ft. The depth data here comes from a transect sounding survey by the Ontario MNRF. What the data behind the map says about each species, season by season:
Otter Lake maps at 194 acres behind 7 miles of shoreline — 3 islands included. That shoreline is heavily fingered (development index 3.6) — bays, points and pockets everywhere, which multiplies the fishable edge. About 37% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. End to end it runs roughly 1.4 mi, about 0.9 mi across. Sudbury District claims this one. Its nearest charted neighbour, Lost Lake, is 1 mi to the east.
The spring pattern is a shallow one: pumpkinseed in 1 to 8 ft. Midsummer fish sit out in 2 to 10 ft before dropping to 6 to 18 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 2 ft of water that rates prime for pumpkinseed in spring. Plan around the evening and early morning in the warm months. Summer baits: a micro tube or a sponge spider (fly) gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Shallow bay flat (2 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Shallow bay flat (2 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Back-bay flat (8 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Back-bay flat (8 ft) | Tungsten ice jig + plastic, Tiny spoon |
6 pieces of structure are mapped here — Deep basin, around 39 ft, is the deepest of them.
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 Otter Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Otter Lake is about 40 ft (12 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.
Anglers target pumpkinseed on Otter Lake.
Shallow bay flat is the top-rated area: a weed flat in about 2 ft of water that rates prime for pumpkinseed in spring. Scroll up to the map for the complete spot list by species and season.
For pumpkinseed, the summer bite is best in the evening and 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 Otter 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.
Lost Lake 1 mi · Pistol Lake 2 mi · Ministic Lake 2 mi · Mudhole L. 2 mi · Cascaden Lake 2 mi · Southwest Snider Lake 2 mi · Ermatinger L. 50 2 mi · Poleline Lake 3 mi · Mosquito Lake 3 mi · Long Lake 3 mi · Larchwood L. 3 mi · Whitefish Lake 3 mi
See how Otter Lake stacks up: best pumpkinseed lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). 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.