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Shared by DepthScout anglers. Exact spots stay private, always.
80-acre lake in Nipissing District, Ontario. The lake tops out around 50 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. The rest of this page walks each species through its year, using the map's own scoring.
Clamshell Lake maps at 80 acres behind 1.5 miles of shoreline. Its 1.2 shoreline index means few bank features; the contours below do the pattern work. Littoral water — the productive band under ~15 ft — makes up 35% of this chart, as modeled. Call it 0.6 mi long by 0.3 mi wide at the broadest reach. It sits in Nipissing District. Its nearest charted neighbour, Radiant Lake, is 2 mi to the south.
When the water first warms, brook trout slide up into 2 to 15 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 3 to 20 ft. If you only fish one area, make it Break off the point: a drop-off around 23 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a small spoon fished deep or a trolled lake-clear wobbler + worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (13 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (23 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (13 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (6 ft) | Small jigging spoon, Tungsten jig + plastic |
The chart marks 5 structure features on Clamshell Lake; the deepest is Deep basin at about 43 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 Clamshell Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Clamshell Lake is about 50 ft (15 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 brook trout on Clamshell Lake.
Break off the point is the top-rated area: a drop-off in about 23 ft of water that rates prime for brook trout in summer. Every other rated spot, per species and season, is on the map above.
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 Clamshell 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.
Radiant Lake 2 mi · North Depot Lake 3 mi · Allan Lake 6 mi · Bissett Lake 6 mi · Merganser Lake 6 mi · North River Lake 7 mi · Windigo Lake 8 mi · Claradeer Lake 9 mi · Farncomb Lake 9 mi · Philip Lake 9 mi · Cedar Lake 9 mi · Dingley Lake 10 mi
See how Clamshell Lake stacks up: best brook trout lakes in Ontario
More water nearby: Nipissing District fishing maps (683 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.