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31-acre lake in Lanark County, Ontario. The lake tops out around 10 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. The rest of this page walks each species through its year, using the map's own scoring.
On the chart, Mann Lake draws 35 acres inside 1.8 miles of shoreline. The shoreline is moderately structured (index 2.1) — enough points and pockets to pattern. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout. Call it 0.6 mi long by 0.2 mi wide at the broadest reach. The water lies in Lanark County. For a second option, Flower Round Lake lies 2 mi southwest.
The spring pattern is a shallow one: northern pike in 2 to 8 ft. As the season builds they drop to 3 to 10 ft, wintering in 3 to 10 ft. Top water on the chart: Break off the point, a drop-off in the 5 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 | 3 to 10 ft | dawn & dusk | Break off the point (5 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 3 to 10 ft | midday & dawn | Break off the point (5 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 3 to 10 ft | midday | Main-lake point (8 ft) | Tip-ups, Large jigging spoon |
Spring rock bass on Mann Lake hold shallow, usually 2 to 10 ft. Depth-wise the year is flat: 3 to 10 ft in summer, 3 to 10 ft once it turns cold. The chart's best answer is Main-lake point — point, 8 ft, prime for summer. Prime time lands in the evening. The summer box starts with a ned rig (small) or a marabou jig.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Main-lake point (8 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 3 to 10 ft | dusk | Main-lake point (8 ft) | Ned rig (small), Marabou jig |
| Fall | 3 to 10 ft | midday | Break off the point (5 ft) | Small tube jig, Inline spinner |
| Winter | 3 to 10 ft | midday | Deep basin (9 ft) | Tungsten jig + plastic, Small spoon + spike |
Spring pumpkinseed on Mann Lake hold shallow, usually 1 to 8 ft. By summer they slide out to 2 to 10 ft, and by winter most fish are in 3 to 10 ft. The chart's best answer is Deep basin — deep basin, 9 ft, prime for winter. Prime time lands in the evening and early morning. The summer box starts with a micro tube or a sponge spider (fly).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | open water | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | open water | Micro tube, Sponge spider (fly) |
| Fall | 3 to 10 ft | dusk & dawn | Break off the point (5 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 3 to 10 ft | dawn | Deep basin (9 ft) | Tungsten ice jig + plastic, Tiny spoon |
Mann Lake carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 9 ft down.
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 Mann Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Mann Lake is about 10 ft (3 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 northern pike, rock bass, pumpkinseed on Mann Lake.
Break off the point is the top-rated area: a drop-off in about 5 ft of water that rates prime for northern pike in fall. Every other rated spot, per species and season, is on the map above.
For northern pike, 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 Mann 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.
Flower Round Lake 2 mi · Clay Lake 3 mi · Little Joes Lake 3 mi · Bradfords Lake 3 mi · Bagot Long Lake 3 mi · Mile Lake 4 mi · Green Lake 4 mi · Closs Lake 4 mi · Joes Lake 4 mi · Bailey Lake 4 mi · Peterwhite Lake 5 mi · Nicholson Lake 5 mi
See how Mann Lake stacks up: best northern pike lakes in Ontario · best rock bass lakes in Ontario · best pumpkinseed lakes in Ontario
More water nearby: Lanark County fishing maps (74 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.