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Rating depth structure for brook trout.
Recent public catches load as you reach this section.
103-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 1982 (a transect sounding survey). The season-by-season read for each species follows, from the map's own numbers.
The drawn water covers 103 acres wrapped in 2.7 miles of bank. With a 1.9 development index there's bank structure worth casting at, in moderation. The shallow band under 15 ft claims about 71% of the surface — that's where the groceries are. Tip to tip the water measures near 1 mi with a 0.4-mi widest point. Algoma District claims this one. If the bite dies, Nina Lake is 0 mi to the north.
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.
Early season brook trout use the shallows, holding in 2 to 15 ft. Summer is a 10 to 30 ft game here, winter a 3 to 20 ft one. The chart's best answer is Break off the point — drop-off, 23 ft, prime for summer. Best bite is early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (7 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 (7 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Back-bay flat (5 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for splake tight to the bank in 5 to 25 ft. They move out to 10 to 33 ft in summer and finish the year down in 7 to 33 ft. If you only fish one area, make it Break off the point: a drop-off around 23 ft that scores prime in summer. Best bite is early morning and the evening. A trolled spoon at the thermocline or a white tube jig (deep) is the honest summer answer here.
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 | 5 to 25 ft | dawn & dusk | Main-lake point (7 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 10 to 33 ft chart-limited; documented 25 to 60 ft | dawn & dusk | Break off the point (23 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 9 to 33 ft chart-limited; documented 10 to 35 ft | dawn & dusk | Main-lake point (7 ft) | Casting spoon, Jerkbait |
| Winter | 7 to 33 ft chart-limited; documented 10 to 45 ft | dawn | Break off the point (23 ft) | Jigging spoon tipped with minnow head, Small white tube |
When the water first warms, burbot slide up into 10 to 33 ft. There's no big seasonal slide here — summer means 10 to 33 ft, winter 8 to 33 ft. Start at Deep basin. It's a deep basin holding about 33 ft of water and rates prime come spring. The feeding windows run after dark and midday. Keep a heavy jig + cut bait rigged through the warm months.
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 25 to 70 ft | night & dusk | Deep basin (33 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 10 to 33 ft chart-limited; documented 50 to 120 ft | night & midday | Deep basin (33 ft) | Heavy jig + cut bait |
| Fall | 10 to 33 ft chart-limited; documented 30 to 80 ft | night & dusk | Deep basin (33 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 8 to 33 ft chart-limited; documented 15 to 60 ft | night & dusk | Deep basin (33 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 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 Harry Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Harry Lake is about 33 ft (10 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey).
Anglers target brook trout, splake, burbot on Harry Lake.
Break off the point is the top-rated area: a drop-off in about 23 ft of water that rates prime for splake in summer. The map above holds the full rated-spot list for every 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 Harry 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.
Nina Lake 0 mi · Deschamp Lake 2 mi · Lucus Lake 3 mi · Alexander Lake 4 mi · Rochester Lake 4 mi · Uranium Lake 4 mi · Potbelly L. 4 mi · Bell Lake 4 mi · Applesauce Lake 5 mi · Sharon L. 5 mi · Terace L. 5 mi · Wiggly Lake 6 mi
See how Harry Lake stacks up: best brook trout lakes in Ontario · best burbot lakes in Ontario · best splake 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.