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Rating depth structure for lake whitefish.
Recent public catches load as you reach this section.
50-acre lake in Algoma District, Ontario. The lake tops out around 33 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. The depth data here comes from the Ontario MNRF survey of 1984 (a transect sounding survey). The season-by-season read for each species follows, from the map's own numbers.
The outline encloses 50 acres, worked by 2 miles of shoreline. With a 2 development index there's bank structure worth casting at, in moderation. The shallow band under 15 ft claims about 41% of the surface — that's where the groceries are. Figure 0.7 mi of water from one end to the other, 0.2 mi at the beam. Algoma District claims this one. If the bite dies, Glenn L. is 1 mi to the southeast.
These fish are listed in an exact-water agency record as forage or ecological context. They are not target-species profiles and do not affect DepthScout's Prime, Good, or Fair spot ratings.
Official Ontario MNRF Fish ON-Line record. The listing documents source-recorded presence, not present abundance or guaranteed catchability.
The spring pattern is a shallow one: lake whitefish in 10 to 33 ft. The depth story barely changes: 10 to 33 ft through summer, 10 to 33 ft in winter. The spot to know is Deep basin, a deep basin in about 33 ft of water that rates prime for lake whitefish in summer. Plan around early morning in the warm months. Summer baits: a blade bait vertical or a small jigging spoon gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 33 ft chart-limited; documented 15 to 45 ft | midday & dawn | Break off the point (31 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 10 to 33 ft chart-limited; documented 40 to 90 ft | dawn | Deep basin (33 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Break off the point (31 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 10 to 33 ft chart-limited; documented 25 to 70 ft | midday & dawn | Deep basin (33 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
The spring pattern is a shallow one: cisco (lake herring) in 8 to 33 ft. The depth story barely changes: 10 to 33 ft through summer, 10 to 33 ft in winter. The spot to know is Deep basin, a deep basin in about 33 ft of water that rates prime for cisco (lake herring) in spring. Plan around early morning in the warm months. Summer baits: a vertical flutter spoon (small) or a drop-shot micro plastic gets it done.
Depth note: when a documented seasonal range extends below this chart, the table shows the deepest mapped working water, not a verified holding depth.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 8 to 33 ft chart-limited; documented 10 to 40 ft | dawn & dusk | Deep basin (33 ft) | Small silver spoon, Tiny swim jig (white) |
| Summer | 10 to 33 ft chart-limited; documented 40 to 80 ft | dawn | Deep basin (33 ft) | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | open water | Small casting spoon, Inline spinner (silver) |
| Winter | 10 to 33 ft chart-limited; documented 20 to 60 ft | dawn | Deep basin (33 ft) | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
The chart marks 5 structure features on Three Loon L.; the deepest is Deep basin at about 33 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 Three Loon L. specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Three Loon L. is about 33 ft (10 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1984 (a transect sounding survey).
Anglers target lake whitefish, cisco (lake herring) on Three Loon L..
Deep basin is the top-rated area: a deep basin in about 33 ft of water that rates prime for lake whitefish in summer. Every other rated spot, per species and season, is on the map above.
For lake whitefish, 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 Three Loon L. 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.
Glenn L. 1 mi · Frigid Digit L. 1 mi · Canoe Lake 3 mi · Belle Lake 3 mi · Proctor Lake 3 3 mi · Lillie Lake 3 mi · Ivans L. 4 mi · McCarthy Lake 4 mi · Lizard Lake 4 mi · Christie Lake 4 mi · Lewis Lake 2 4 mi · Wigmore Lake 4 mi
See how Three Loon L. stacks up: best lake whitefish lakes in Ontario · best cisco (lake herring) lakes in Ontario
More water nearby: Algoma District fishing maps (1026 charts). Browse all Ontario fishing maps. 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.