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70-acre lake in Rainy River District, Ontario. The lake tops out around 53 ft. This chart interpolates between a real shoreline and a known maximum depth. It will point you at likely water, but it is not a navigation product. Every species below gets its seasonal read from the same numbers driving the chart.
The outline encloses 70 acres, worked by 2 miles of shoreline. With a 1.7 development index there's bank structure worth casting at, in moderation. About 47% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Tip to tip the water measures near 0.5 mi with a 0.4-mi widest point. Rainy River District claims this one. If the bite dies, Icy Lake is 1 mi to the south.
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 15 to 35 ft. The spot to know is Shallow bay flat, a weed flat in about 6 ft of water that rates prime for yellow perch in spring. Warm-month bites cluster around early morning. Throw a drop-shot micro plastics or a small spoon tipped with worm until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (6 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (24 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Break off the point (24 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Break off the point (24 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Come spring, look for northern pike tight to the bank in 2 to 8 ft. Expect a summer slide to 8 to 20 ft, then a winter hold in 5 to 15 ft. Start at Shallow bay flat. It's a weed flat holding about 6 ft of water and rates prime come spring. Prime time lands in early morning and the evening. A bucktail or a weedless spoon over cabbage is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (6 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Shallow bay flat (6 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Shallow bay flat (6 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (6 ft) | Tip-ups, Large jigging spoon |
Come spring, look for burbot tight to the bank in 16 to 53 ft. Through summer count on 16 to 53 ft; the winter hold is 13 to 53 ft. If you only fish one area, make it Deep basin: a deep basin around 45 ft that scores prime in spring. Best bite is after dark and midday. A heavy jig + cut bait 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 | 16 to 53 ft chart-limited; documented 25 to 70 ft | night & dusk | Deep basin (45 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 16 to 53 ft chart-limited; documented 50 to 120 ft | night & midday | Deep basin (45 ft) | Heavy jig + cut bait |
| Fall | 16 to 53 ft chart-limited; documented 30 to 80 ft | night & dusk | Deep basin (45 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 13 to 53 ft chart-limited; documented 15 to 60 ft | night & dusk | Deep basin (45 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Slush Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 45 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 Slush Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Slush Lake is about 53 ft (16 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 yellow perch, northern pike, burbot on Slush Lake.
Shallow bay flat is the top-rated area: a weed flat in about 6 ft of water that rates prime for yellow perch in spring. Scroll up to the map for the complete spot list by species and season.
For yellow perch, 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 Slush 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.
Icy Lake 1 mi · Snow Lake 1 mi · Fotheringham Lake 1 mi · Moose Lake 3 mi · North Twin Lake 3 mi · Rawn Reservoir 4 mi · Husband Lake 4 mi · Marmion Lake 4 mi · Mitt Lake 4 mi · Low Lake 4 mi · Wife Lake 5 mi · Finlayson Lake 5 mi
See how Slush Lake stacks up: best northern pike lakes in Ontario · best yellow perch lakes in Ontario · best burbot lakes in Ontario
More water nearby: Rainy River District fishing maps (257 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.