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83-acre lake in Sudbury District, Ontario. The lake tops out around 55 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What the data behind the map says about each species, season by season:
On the chart, Lake of the Mountains draws 82 acres inside 1.7 miles of shoreline. Nearly circular (index 1.3), so the story is the bottom, not the bank. About 89% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. End to end it runs roughly 0.6 mi, about 0.3 mi across. You'll find it in Sudbury District. Closest neighbour on DepthScout: Nairn L. 28, 2 mi southeast of here.
The spring pattern is a shallow one: brook trout in 2 to 15 ft. As the season builds they drop to 10 to 30 ft, wintering in 3 to 20 ft. Top water on the chart: Break off the point, a drop-off in the 5 ft range, prime in winter. Time it for early morning and the evening. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (1 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (5 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (1 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (5 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for cisco (lake herring) tight to the bank in 10 to 40 ft. They move out to 17 to 55 ft in summer and finish the year down in 17 to 55 ft. If you only fish one area, make it Deep basin: a deep basin around 55 ft that scores prime in summer. Best bite is early morning. A vertical flutter spoon (small) or a drop-shot micro plastic is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Deep basin (55 ft) | Small silver spoon, Tiny swim jig (white) |
| Summer | 17 to 55 ft | dawn | Deep basin (55 ft) | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | Break off the point (5 ft) | Small casting spoon, Inline spinner (silver) |
| Winter | 17 to 55 ft | dawn | Deep basin (55 ft) | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 55 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 Lake of the Mountains specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Lake of the Mountains is about 55 ft (17 m) deep at its deepest point. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target brook trout, cisco (lake herring) on Lake of the Mountains.
Deep basin is the top-rated area: a deep basin in about 55 ft of water that rates prime for cisco (lake herring) in summer. The interactive chart above rates every spot for each species and season.
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 Lake of the Mountains 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.
Nairn L. 28 2 mi · Rock Lake 2 mi · Agnew Lake 2 mi · Tenho Lake 4 mi · Pomfrey Lake 4 mi · Jiggy Lake 5 mi · Wabagishik Lake 6 mi · Brazil Lake 7 mi · Nameless Lake 7 mi · Elizabeth Lake 8 mi · Arts L. 8 mi · Clear Lake 8 mi
See how Lake of the Mountains stacks up: best brook trout lakes in Ontario · best cisco (lake herring) lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. 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.