Lake depth chart
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146-acre lake in Kenora District, Ontario. The lake tops out around 46 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 1985 (an MNRF lake survey). The rest of this page walks each species through its year, using the map's own scoring.
Drawn out, this is 146 acres of water rimmed by 4 miles of bank. An index of 2.4 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. The shallow band under 15 ft claims about 82% of the surface — that's where the groceries are. Figure 1.3 mi of water from one end to the other, 0.6 mi at the beam. You'll find it in Kenora District. Closest neighbour on DepthScout: Clear L., 2 mi west of here.
The spring pattern is a shallow one: northern pike in 2 to 8 ft. Midsummer fish sit out in 8 to 20 ft before dropping to 5 to 15 ft for winter. The spot to know is Back-bay flat, a weed flat in about 2 ft of water that rates prime for northern pike in spring. Plan around early morning and the evening in the warm months. Summer baits: a bucktail or a weedless spoon over cabbage gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Back-bay flat (2 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Secondary point (11 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (5 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Secondary point (11 ft) | Tip-ups, Large jigging spoon |
In spring, burbot run shallow here, mostly 14 to 46 ft. Summer keeps them at 14 to 46 ft, and they winter in 12 to 46 ft. Spring burbot concentrate at Deep basin, a prime-rated deep basin around 26 ft. Fish it in after dark and midday and you'll meet the bite. You won't need more than a heavy jig + cut bait most summer days.
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 | 14 to 46 ft chart-limited; documented 25 to 70 ft | night & dusk | Deep basin (26 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 14 to 46 ft chart-limited; documented 50 to 120 ft | night & midday | Deep basin (26 ft) | Heavy jig + cut bait |
| Fall | 14 to 46 ft chart-limited; documented 30 to 80 ft | night & dusk | Deep basin (26 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 12 to 46 ft chart-limited; documented 15 to 60 ft | night & dusk | Deep basin (26 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
The chart marks 6 structure features on Roberts Lake; the deepest is Deep basin at about 26 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 Roberts Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Roberts Lake is about 46 ft (14 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1985 (an MNRF lake survey).
Anglers target northern pike, burbot on Roberts Lake.
Back-bay flat is the top-rated area: a weed flat in about 2 ft of water that rates prime for northern pike in spring. The map above holds the full rated-spot list for every species and season.
For northern pike, 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 Roberts 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.
Clear L. 2 mi · Balmoral Lake 2 mi · WE86-09, L. 2 mi · Elbow Lake 3 mi · Lower Moosehide Lake 3 mi · Fawn L. 3 mi · Little Long L. 3 mi · Upper Moosehide Lake 3 mi · Belmont L. 3 mi · Balmoral River 4 mi · George L. 4 mi · Greenheart Lake 4 mi
See how Roberts Lake stacks up: best northern pike lakes in Ontario · best burbot lakes in Ontario
More water nearby: Kenora District fishing maps (1173 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.