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Rating depth structure for walleye.
Shared by DepthScout anglers. Exact spots stay private, always.
1,030-acre lake near Big River. The lake tops out around 37 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. The rest of this page walks each species through its year, using the map's own scoring.
The outline encloses 1,027 acres, worked by 11.1 miles of shoreline. That shoreline is heavily fingered (development index 2.5) — bays, points and pockets everywhere, which multiplies the fishable edge. Littoral water — the productive band under ~15 ft — makes up 66% of this chart, as modeled. Tip to tip the water measures near 2.5 mi with a 1.7-mi widest point. It sits in Division No. 16. If the bite dies, Top Lake is 2 mi to the south.
Spring burbot on Osimisk Lake hold shallow, usually 11 to 37 ft. Depth-wise the year is flat: 11 to 37 ft in summer, 9 to 37 ft once it turns cold. The chart's best answer is Deep basin — deep basin, 31 ft, prime for spring. Prime time lands in after dark and midday. The summer box starts with a heavy jig + cut bait.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 11 to 37 ft | night & dusk | Deep basin (31 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 11 to 37 ft | night & midday | Deep basin (31 ft) | Heavy jig + cut bait |
| Fall | 11 to 37 ft | night & dusk | Deep basin (31 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 9 to 37 ft | night & dusk | Deep basin (31 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Early season northern pike use the shallows, holding in 2 to 8 ft. Summer is an 8 to 20 ft game here, winter a 5 to 15 ft one. The chart's best answer is Shallow bay flat — weed flat, 4 ft, prime for spring. Best bite is early morning and the evening. Tie on a bucktail or a weedless spoon over cabbage and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | Shallow bay flat (4 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (17 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (17 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Shallow bay flat (4 ft) | Tip-ups, Large jigging spoon |
The spring pattern is a shallow one: walleye in 4 to 15 ft. Midsummer fish sit out in 15 to 35 ft before dropping to 11 to 37 ft for winter. The spot to know is Break off the point, a drop-off in about 17 ft of water that rates prime for walleye in fall. Plan around the evening and early morning in the warm months. Summer baits: a crawler harness on bottom bouncer or a deep crankbait (trolled) gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (9 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Break off the point (17 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 11 to 37 ft | dusk & night | Break off the point (17 ft) | Jigging rap, Jig + big minnow |
| Winter | 11 to 37 ft | dusk & dawn | Deep basin (31 ft) | Jigging spoon + minnow head, Rattle bait |
In spring, yellow perch run shallow here, mostly 3 to 12 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 15 to 35 ft for winter. Spring yellow perch concentrate at Shallow bay flat, a prime-rated weed flat around 4 ft. Fish it in early morning and you'll meet the bite. You won't need more than a drop-shot micro plastics or a small spoon tipped with worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (4 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (17 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Deep basin (31 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Deep basin (31 ft) | Tungsten jig + spikes, Rattle spoon (small) |
6 pieces of structure are mapped here — Deep basin, around 31 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Saskatchewan waters are set by the Saskatchewan anglers' guide — and special regulations can apply to Osimisk Lake specifically, so confirm the current rules before you fish.
Check the official Saskatchewan fishing regulations →
Osimisk Lake is about 37 ft (11 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 burbot, northern pike, walleye, yellow perch on Osimisk Lake.
Deep basin is the top-rated area: a deep basin in about 31 ft of water that rates prime for burbot in spring. Scroll up to the map for the complete spot list by species and season.
For burbot, the summer bite is best in after dark and midday. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Osimisk Lake is regulated by the Saskatchewan anglers' guide. Check the official Saskatchewan regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Top Lake 2 mi · Peyasew Lake 3 mi · Tatham Lake 4 mi · Millpond Lake 4 mi · Little Nesslin Lake 4 mi · Nesslin Lake 4 mi · Pancake Lake 5 mi · Swede Lake 5 mi · Hackett Lake 8 mi · Ness Lake 8 mi · Delaronde Lake 9 mi · Tie Lake 10 mi
See how Osimisk Lake stacks up: best walleye lakes in Saskatchewan · best northern pike lakes in Saskatchewan · best yellow perch lakes in Saskatchewan · best burbot lakes in Saskatchewan
More water nearby: Division No. 16 fishing maps (51 charts). Browse all Saskatchewan 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.