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Rating depth structure for lake trout.
Shared by DepthScout anglers. Exact spots stay private, always.
36-acre lake in Sudbury District, Ontario. The lake tops out around 100 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. Here's the year, species by species, as the scoring engine sees it.
Drawn out, this is 36 acres of water rimmed by 1.1 miles of bank. A shoreline index of 1.3 says round and simple: fish relate to depth changes here, not shoreline features. About 13% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. The basin spans about 0.3 mi end to end and 0.3 mi across at its widest. You'll find it in Sudbury District. Closest neighbour on DepthScout: Long Lake, 1 mi northeast of here.
Start shallow in spring: lake trout sit in 10 to 40 ft that time of year. Warm water sends them out to 30 to 100 ft; cold water stacks them in 20 to 80 ft. Top water on the chart: Deep basin, a deep basin in the 85 ft range, prime in summer. Fish it in early morning and you'll meet the bite. Throw a white tube jig (deep) or a magnum spoon on downrigger until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Main-lake point (25 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 30 to 100 ft | dawn | Deep basin (85 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Main-lake point (25 ft) | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | Deep basin (85 ft) | White tube jig, Airplane jig |
When the water first warms, cisco (lake herring) slide up into 10 to 40 ft. Summer is a 40 to 80 ft game here, winter a 20 to 60 ft one. Start at Deep basin. It's a deep basin holding about 85 ft of water and rates prime come summer. The feeding windows run early morning. Keep a vertical flutter spoon (small) or a drop-shot micro plastic rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Deep basin (85 ft) | Small silver spoon, Tiny swim jig (white) |
| Summer | 40 to 80 ft | dawn | Deep basin (85 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 | 20 to 60 ft | dawn | Break off the point (45 ft) | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
Round Lake carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 85 ft down.
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 100 ft (30 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 lake trout, cisco (lake herring) on Round Lake.
Deep basin is the top-rated area: a deep basin in about 85 ft of water that rates prime for lake trout in summer. Open the map above to see every rated spot for each species and season.
For lake trout, 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 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.
Long Lake 1 mi · Cutler Lake 2 mi · Maple Lake 4 mi · White's Lake 4 mi · Harrow L. 28 4 mi · La Cloche Lake 5 mi · Wright's Lake 6 mi · Moose Lake 7 mi · Elbow Lake 7 mi · West Quartzite Lake 9 mi · Moyle Lake 9 mi · Alexander Lake 9 mi
See how Round Lake stacks up: best lake trout lakes in Ontario · best cisco (lake herring) lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). Browse all Ontario fishing maps or 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.