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Rating depth structure for brook trout.
Recent public catches load as you reach this section.
88-acre lake in Algoma District, Ontario. The lake tops out around 40 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. What the data behind the map says about each species, season by season:
Drawn out, this is 88 acres of water rimmed by 3.4 miles of bank. With a shoreline index of 2.6, this water is all arms and coves — edge habitat well beyond its acreage. 60% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Tip to tip the water measures near 0.8 mi with a 0.4-mi widest point. The water lies in Algoma District. The nearest mapped water is Lucille Lake, 1 mi to the south.
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Warm water sends them out to 10 to 30 ft; cold water stacks them in 3 to 20 ft. Top water on the chart: Break off the point, a drop-off in the 18 ft range, prime in summer. Fish it in early morning and the evening and you'll meet the bite. Throw a small spoon fished deep or a trolled lake-clear wobbler + worm until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (10 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (18 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (10 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (18 ft) | Small jigging spoon, Tungsten jig + plastic |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 34 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 Topsy Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Topsy Lake is about 40 ft (12 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 Topsy Lake.
Break off the point is the top-rated area: a drop-off in about 18 ft of water that rates prime for brook trout 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 Topsy 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.
Lucille Lake 1 mi · Horner Lake 2 mi · Conacher Lake 2 mi · Tee Lake 2 mi · Primeau Lake 2 mi · Pine Island Lake 3 mi · Bijou Lake 3 mi · Darragh Lake 4 mi · Goldie Lake 4 mi · Birch Lake 4 mi · Fish Lake 5 mi · Davieaux Lake 5 mi
See how Topsy Lake stacks up: best brook trout lakes in Ontario
More water nearby: Algoma District fishing maps (1026 charts). Browse all Ontario fishing maps. 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.