Sign inSign up free Sign inSign up free Sign inSign up freeLake depth chart
Today's read
Reopens January 1 · FMZ 7 or 10 zone-wide season. Lake-specific exceptions and sanctuaries can differ — check the official summary before you go.
Recent public catches load as you reach this section.
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.
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 | 2 to 15 ft | dawn & dusk | Back-bay flat (2 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 5 to 15 ft chart-limited; documented 10 to 30 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 chart-limited; documented 3 to 20 ft | dawn | Deep basin (6 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for lake whitefish tight to the bank in 5 to 15 ft. Through summer count on 5 to 15 ft; the winter hold is 5 to 15 ft. If you only fish one area, make it Deep basin: a deep basin around 6 ft that scores prime in summer. Best bite is early morning. A blade bait vertical or a small jigging spoon 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 15 ft chart-limited; documented 15 to 45 ft | midday & dawn | Shoreline break (1 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 5 to 15 ft chart-limited; documented 40 to 90 ft | dawn | Deep basin (6 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 4 to 15 ft chart-limited; documented 8 to 30 ft | dusk | Shoreline break (1 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 5 to 15 ft chart-limited; documented 25 to 70 ft | midday & dawn | Deep basin (6 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
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, lake whitefish on Round Lake.
Deep basin is the top-rated area: a deep basin in about 6 ft of water that rates prime for lake whitefish 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 · best lake whitefish lakes in Ontario
More water nearby: Algoma District fishing maps (1026 charts). Browse all Ontario fishing maps. See every water on DepthScout. Depth data: Ontario Ministry of Natural Resources and Forestry, Lake survey data (Open Government Licence – Ontario). 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.