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42-acre lake in Algoma District, Ontario. The lake tops out around 15 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 1973, a decades-old survey (an MNRF lake survey). Below is the species-by-species picture, pulled from the same data the map uses.
On the chart, Round Lake draws 42 acres inside 1 miles of shoreline. Nearly circular (index 1.1), so the story is the bottom, not the bank. End to end it runs roughly 0.3 mi, about 0.3 mi across. You'll find it in Algoma District. For a second option, Islay Lake lies 1 mi north.
The spring pattern is a shallow one: brook trout in 2 to 15 ft. The depth story barely changes: 5 to 15 ft through summer, 2 to 15 ft in winter. Top water on the chart: Deep basin, a deep basin in the 6 ft range, prime in summer. 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 | Back-bay flat (2 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 15 ft | dawn & dusk | Deep basin (6 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Winter | 2 to 15 ft | dawn | Deep basin (6 ft) | Small jigging spoon, Tungsten jig + plastic |
Count 4 structure marks on this chart. The deepest, Deep basin, sits near 6 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 Round Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Round Lake is about 15 ft (5 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1973, a decades-old survey (an MNRF lake survey).
Anglers target brook trout on Round Lake.
Deep basin is the top-rated area: a deep basin in about 6 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 Round 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.
Islay Lake 1 mi · West Joco Lake 2 mi · Joco Lake 3 mi · Upper Pancake Lake 3 mi · Queminico Lake 3 mi · Caysee Lake 3 mi · Middle Pancake Lake 3 mi · Annie Lake 4 mi · Pancake Lake 5 mi · Huff Lake 5 mi · Nicolet L. 16 6 mi · Pipe Lake 6 mi
See how Round Lake stacks up: best brook trout lakes in Ontario
More water nearby: Algoma District fishing maps (1026 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.