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Rating depth structure for walleye.
Shared by DepthScout anglers. Exact spots stay private, always.
3,300-acre lake near Fox Creek. The lake tops out around 35 ft. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled. What the data behind the map says about each species, season by season:
The drawn water covers 3,293 acres wrapped in 15.1 miles of bank. A middling shoreline index (1.9) gives it some bays to work without being a maze. The shallow band under 15 ft claims about 60% of the surface — that's where the groceries are. Figure 5.4 mi of water from one end to the other, 2 mi at the beam. It sits in Division No. 18. Its nearest charted neighbour, Smoke Lake, is 9 mi to the southwest.
Spring burbot on Iosegun Lake hold shallow, usually 11 to 35 ft. Depth-wise the year is flat: 11 to 35 ft in summer, 9 to 35 ft once it turns cold. The chart's best answer is Deep basin — deep basin, 35 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 35 ft | night & dusk | Deep basin (35 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 11 to 35 ft | night & midday | Deep basin (35 ft) | Heavy jig + cut bait |
| Fall | 11 to 35 ft | night & dusk | Deep basin (35 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 9 to 35 ft | night & dusk | Deep basin (35 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
In spring, cisco (lake herring) run shallow here, mostly 9 to 35 ft. Summer keeps them at 11 to 35 ft, and they winter in 11 to 35 ft. Deep basin is the standout, a deep basin at roughly 35 ft, rated prime for spring cisco (lake herring). Time it for early morning. You won't need more than a vertical flutter spoon (small) or a drop-shot micro plastic most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 9 to 35 ft | dawn & dusk | Deep basin (35 ft) | Small silver spoon, Tiny swim jig (white) |
| Summer | 11 to 35 ft | dawn | Deep basin (35 ft) | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | Rock reef (3 ft) | Small casting spoon, Inline spinner (silver) |
| Winter | 11 to 35 ft | dawn | Deep basin (35 ft) | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
In spring, lake whitefish run shallow here, mostly 11 to 35 ft. Summer keeps them at 11 to 35 ft, and they winter in 11 to 35 ft. Deep basin is the standout, a deep basin at roughly 35 ft, rated prime for summer lake whitefish. Time it for early morning. You won't need more than a blade bait vertical or a small jigging spoon most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 11 to 35 ft | midday & dawn | Break off the point (16 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 11 to 35 ft | dawn | Deep basin (35 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Rock reef (3 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 11 to 35 ft | midday & dawn | Deep basin (35 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
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, 2 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 (2 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Break off the point (16 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Break off the point (16 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Weed 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 35 ft for winter. The spot to know is Break off the point, a drop-off in about 16 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 | Rock reef (3 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Break off the point (16 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 11 to 35 ft | dusk & night | Break off the point (16 ft) | Jigging rap, Jig + big minnow |
| Winter | 11 to 35 ft | dusk & dawn | Deep basin (35 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 Weed flat, a prime-rated weed flat around 3 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 | Weed flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (16 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Deep basin (35 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Deep basin (35 ft) | Tungsten jig + spikes, Rattle spoon (small) |
The chart marks 12 structure features on Iosegun Lake; the deepest is Deep basin at about 35 ft.
Season dates, license requirements, and size and bag limits for Alberta waters are set by the Alberta fishing regulations — and special regulations can apply to Iosegun Lake specifically, so confirm the current rules before you fish.
Check the official Alberta fishing regulations →
Iosegun Lake is about 35 ft (11 m) deep at its deepest point. The depth chart comes from published agency bathymetric survey data, so the contours are survey-derived rather than computer-modeled.
Anglers target burbot, cisco (lake herring), lake whitefish, northern pike, walleye, yellow perch on Iosegun Lake.
Deep basin is the top-rated area: a deep basin in about 35 ft of water that rates prime for burbot in spring. Every other rated spot, per species and season, is on the map above.
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 Iosegun Lake is regulated by the Alberta fishing regulations. Check the official Alberta regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Smoke Lake 9 mi · Snipe Lake 45 mi · McLeod Lake 50 mi · Sturgeon Lake 52 mi · Shiningbank Lake 54 mi · Freeman Lake 54 mi · Millers Lake 63 mi · Black Mud Lake 64 mi · Obed Lake 64 mi · Sang Lake 69 mi · Chrystina Lake 70 mi · Goose Lake 70 mi
See how Iosegun Lake stacks up: best walleye lakes in Alberta · best northern pike lakes in Alberta · best yellow perch lakes in Alberta · best lake whitefish lakes in Alberta
More water nearby: Division No. 18 fishing maps (6 charts). Browse all Alberta fishing maps or 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.