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Fishing Isle Lake: what the data says
5,617-acre lake near Silver Sands. The lake tops out around 25 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Here is how the season plays out for each species, straight from the data behind the map.
Burbot fishing at Isle Lake
Start shallow in spring: burbot sit in 8 to 25 ft that time of year. Summer fish stay in 8 to 25 ft, and winter fish hold in 6 to 25 ft. If you only fish one area, make it Deep basin: a deep basin around 25 ft that scores prime in spring. Best bite is after dark and midday. Tie on a heavy jig + cut bait and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 8 to 25 ft | night & dusk | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 8 to 25 ft | night & midday | Heavy jig + cut bait |
| Fall | 8 to 25 ft | night & dusk | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 6 to 25 ft | night & dusk | Glow tungsten + cut bait, Rattle spoon + minnow head |
Northern Pike fishing at Isle Lake
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Summer pushes them deeper, 8 to 20 ft, and winter fish settle into 5 to 15 ft. The spot to know is Shallow bay flat, a weed flat in about 2 ft of water that rates prime for northern pike in spring. In summer the feeding windows fall in 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 | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Tip-ups, Large jigging spoon |
Walleye fishing at Isle Lake
In spring, walleye run shallow here, mostly 4 to 15 ft. Summer pushes them deeper, 8 to 25 ft, and winter fish settle into 8 to 25 ft. The spot to know is Break off the point, a drop-off in about 19 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 | Go-to baits |
|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | 1/8 oz jig + minnow, Hair jig |
| Summer | 8 to 25 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 8 to 25 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 8 to 25 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
Yellow Perch fishing at Isle Lake
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. Summer pushes them deeper, 8 to 25 ft, and winter fish settle into 8 to 25 ft. If you only fish one area, make it Weed flat: a weed flat around 3 ft that scores prime in spring. Best bite is early morning. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 8 to 25 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 8 to 25 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 8 to 25 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Notable structure
- Deep basin: deep basin, around 25 ft
- Shallow feeding flat: feeding flat, around 20 ft
- Shallow feeding flat: feeding flat, around 20 ft
- Break off the point: drop-off, around 19 ft
- Feeding flat: feeding flat, around 13 ft
- Sharp break: drop-off, around 10 ft
- Shoreline point: point, around 5 ft
- Shoreline point: point, around 5 ft
- Main-lake point: point, around 3 ft
- Secondary point: point, around 3 ft
- Weed flat: weed flat, around 3 ft
- Shallow bay flat: weed flat, around 2 ft
- Back-bay flat: weed flat, around 2 ft
Common questions
How deep is Isle Lake?
Isle Lake is about 25 ft at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Isle Lake?
Anglers target walleye, northern pike, yellow perch, burbot on Isle Lake.
Where is the best fishing spot on Isle Lake?
Deep basin is the top-rated area: a deep basin in about 25 ft of water that rates prime for burbot in spring. Open the map above to see every rated spot for each species and season.
When is the best time to fish Isle Lake?
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.
Nearby waters
Wabamun Lake · Birch Lake · Lac Ste. Anne · Star Lake · Jack Fish Lake · Mink Lake
See how Isle Lake stacks up: best walleye lakes in Alberta · best northern pike lakes in Alberta · best yellow perch lakes in Alberta · best burbot lakes in Alberta
Browse all Alberta fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.