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185-acre lake in Bruce County, Ontario. The lake tops out around 3 ft. Bathymetry on this water is estimated from its real outline and maximum depth. Use it to shortlist water, then verify with your electronics — and never navigate by it. What the data behind the map says about each species, season by season:
The outline encloses 186 acres, worked by 4.7 miles of shoreline. With a shoreline index of 2.4, this water is all arms and coves — edge habitat well beyond its acreage. Nothing on this chart breaks 15 ft, which makes the whole surface littoral: weeds, bait and ambush cover everywhere. Figure 1.3 mi of water from one end to the other, 0.4 mi at the beam. Bruce County claims this one. If the bite dies, Britain Lake is 2 mi to the northwest.
In spring, yellow perch run shallow here, mostly 1 to 3 ft. Summer keeps them at 1 to 3 ft, and they winter in 1 to 3 ft. Shallow bay flat is the standout, a weed flat at roughly 3 ft, rated prime for spring yellow perch. Time it for early morning. You won't need more than a drop-shot micro plastics or a small spoon tipped with worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 3 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 1 to 3 ft | dawn | Deep basin (3 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 1 to 3 ft | midday | Deep basin (3 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 1 to 3 ft | midday & dawn | Deep basin (3 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Early season northern pike use the shallows, holding in 1 to 3 ft. Even in summer they hold at 1 to 3 ft; winter keeps them in 1 to 3 ft. Put Shallow bay flat first on the milk run — a weed flat near 3 ft that grades prime for spring. In summer the feeding windows fall in early morning and the evening. Tie on a bucktail or a weedless spoon over cabbage and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 3 ft | midday & dawn | Shallow bay flat (3 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 1 to 3 ft | dawn & dusk | Shallow bay flat (3 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 1 to 3 ft | midday & dawn | Shallow bay flat (3 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 1 to 3 ft | midday | Shallow bay flat (3 ft) | Tip-ups, Large jigging spoon |
Early season smallmouth bass use the shallows, holding in 1 to 3 ft. Even in summer they hold at 1 to 3 ft; winter keeps them in 1 to 3 ft. Put Main-lake point first on the milk run — a point near 3 ft that grades prime for fall. In summer the feeding windows fall in early morning and the evening. Tie on a drop shot (goby/minnow) or a ned rig and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 3 ft | dawn & dusk | Main-lake point (3 ft) | Ned rig, Tube jig |
| Summer | 1 to 3 ft | dawn & dusk | Break off the point (1 ft) | Drop shot (goby/minnow), Ned rig |
| Fall | 1 to 3 ft | midday & dawn | Main-lake point (3 ft) | Jerkbait, Blade bait |
| Winter | 1 to 3 ft | midday | Break off the point (1 ft) | Blade bait, Hair jig |
Count 6 structure marks on this chart. The deepest, Main-lake point, sits near 3 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 Otter Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Otter Lake is about 3 ft (1 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 yellow perch, northern pike, smallmouth bass on Otter Lake.
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for yellow perch in spring. The map above holds the full rated-spot list for every species and season.
For yellow perch, the summer bite is best in 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.
Britain Lake 2 mi · Miller Lake 3 mi · Georgian Bay - Bruce Peninsula & Tobermory 5 mi · Ague Lake 6 mi · Ira Lake 6 mi · Crane Lake 6 mi · Gillies Lake 7 mi · Warder Lake 7 mi · Quenlin Lake 7 mi · Lymburner Lake 7 mi · Marley Lake 8 mi · Conley Lake 8 mi
See how Otter Lake stacks up: best smallmouth bass lakes in Ontario · best northern pike lakes in Ontario · best yellow perch lakes in Ontario
More water nearby: Bruce County fishing maps (60 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.