Sign inSign up freeRecent catches at Grassy Island Lake
Shared by DepthScout anglers. Exact spots stay private, always.
Fishing Grassy Island Lake: what the data says
153-acre lake in Alberta. The lake tops out around 7 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. Below is the species-by-species picture, pulled from the same data the map uses.
On the chart, Grassy Island Lake draws 153 acres inside 3.2 miles of shoreline. The shoreline is moderately structured (index 1.8) — enough points and pockets to pattern. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout.
Yellow Perch fishing at Grassy Island Lake
When the water first warms, yellow perch slide up into 2 to 7 ft. There's no big seasonal slide here — summer means 2 to 7 ft, winter 2 to 7 ft. Start at Shallow bay flat. It's a weed flat holding about 3 ft of water and rates prime come spring. The feeding windows run early morning. Keep a drop-shot micro plastics or a small spoon tipped with worm rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 7 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 2 to 7 ft | dawn | Deep basin (7 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 2 to 7 ft | midday | Deep basin (7 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 2 to 7 ft | midday & dawn | Deep basin (7 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Northern Pike fishing at Grassy Island Lake
The spring pattern is a shallow one: northern pike in 2 to 7 ft. Even in summer they hold at 2 to 7 ft; winter keeps them in 2 to 7 ft. The spot to know is Shallow bay flat, a weed flat in about 3 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 7 ft | midday & dawn | Shallow bay flat (3 ft) | #5 inline spinner, Spoon (red/white) |
| Summer | 2 to 7 ft | dawn & dusk | Shallow bay flat (3 ft) | Bucktail, Weedless spoon over cabbage |
| Fall | 2 to 7 ft | midday & dawn | Shallow bay flat (3 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 2 to 7 ft | midday | Shallow bay flat (3 ft) | Tip-ups, Large jigging spoon |
Walleye fishing at Grassy Island Lake
When the water first warms, walleye slide up into 2 to 7 ft. There's no big seasonal slide here — summer means 2 to 7 ft, winter 2 to 7 ft. If you only fish one area, make it Break off the point: a drop-off around 6 ft that scores prime in fall. In summer the feeding windows fall in the evening and early morning. Keep a crawler harness on bottom bouncer or a deep crankbait (trolled) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 7 ft | dusk & dawn | Main-lake point (3 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 2 to 7 ft | dusk & dawn | Break off the point (6 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 2 to 7 ft | dusk & night | Break off the point (6 ft) | Jigging rap, Jig + big minnow |
| Winter | 2 to 7 ft | dusk & dawn | Deep basin (7 ft) | Jigging spoon + minnow head, Rattle bait |
Lake Whitefish fishing at Grassy Island Lake
Spring lake whitefish on Grassy Island Lake hold shallow, usually 2 to 7 ft. Summer fish stay in 2 to 7 ft, and winter fish hold in 2 to 7 ft. Put Deep basin first on the milk run — a deep basin near 7 ft that grades prime for summer. The feeding windows run early morning. The summer box starts with a blade bait vertical or a small jigging spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 7 ft | midday & dawn | Break off the point (6 ft) | Small jig + waxworm, Blade bait (small) |
| Summer | 2 to 7 ft | dawn | Deep basin (7 ft) | Blade bait vertical, Small jigging spoon |
| Fall | 2 to 7 ft | dusk | Break off the point (6 ft) | Small spoon (gold), Jig + plastic larva |
| Winter | 2 to 7 ft | midday & dawn | Deep basin (7 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Burbot fishing at Grassy Island Lake
In spring, burbot run shallow here, mostly 2 to 7 ft. Even in summer they hold at 2 to 7 ft; winter keeps them in 2 to 7 ft. Spring burbot concentrate at Deep basin, a prime-rated deep basin around 7 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.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 7 ft | night & dusk | Deep basin (7 ft) | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 2 to 7 ft | night & midday | Deep basin (7 ft) | Heavy jig + cut bait |
| Fall | 2 to 7 ft | night & dusk | Deep basin (7 ft) | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 2 to 7 ft | night & dusk | Deep basin (7 ft) | Glow tungsten + cut bait, Rattle spoon + minnow head |
Notable structure
- Deep basin: deep basin, around 7 ft
- Break off the point: drop-off, around 6 ft
- Back-bay flat: weed flat, around 4 ft
- Main-lake point: point, around 3 ft
- Secondary point: point, around 3 ft
- Shallow bay flat: weed flat, around 3 ft
Grassy Island Lake fishing regulations
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 Grassy Island Lake specifically, so confirm the current rules before you fish.
Check the official Alberta fishing regulations →
Common questions
How deep is Grassy Island Lake?
Grassy Island Lake is about 7 ft (2 m) deep 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 Grassy Island Lake?
Anglers target walleye, northern pike, yellow perch, lake whitefish, burbot on Grassy Island Lake. This isn't a survey of the water — none is published for it — but an informed estimate from the species common to the region, narrowed by this water's depth, size and each species' range.
Where is the best fishing spot on Grassy Island Lake?
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for yellow perch in spring. The map above holds the full rated-spot list for every species and season.
When is the best time to fish Grassy Island Lake?
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.
What are the fishing regulations for Grassy Island Lake?
Fishing on Grassy Island 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.
Nearby waters
Lower Mann Lake 7 mi · Upper Mann Lake 9 mi · Vincent Lake 10 mi · Floatingstone Lake 10 mi · Minnie Lake 11 mi · Garner Lake 14 mi · Chickenhill Lake 16 mi · Goodfish Lake 18 mi · Fork Lake 18 mi · Moose Lake 19 mi · Bonnie Lake 21 mi · Whitefish Lake 22 mi
See how Grassy Island 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
Browse all Alberta fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.