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Fishing Marys Lake: what the data says
35-acre lake near Ontario. The lake tops out around 13 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.
Walleye fishing at Marys Lake
Spring walleye on Marys Lake hold shallow, usually 3 to 13 ft. Summer fish stay in 4 to 13 ft, and winter fish hold in 4 to 13 ft. The spot to know is Break off the point, a drop-off in about 7 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 | 3 to 13 ft | dusk & dawn | 1/8 oz jig + minnow, Hair jig |
| Summer | 4 to 13 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 4 to 13 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 4 to 13 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
Northern Pike fishing at Marys Lake
In spring, northern pike run shallow here, mostly 2 to 8 ft. They move out to 4 to 13 ft in summer and finish the year down in 4 to 13 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 | 4 to 13 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 4 to 13 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 4 to 13 ft | midday | Tip-ups, Large jigging spoon |
Yellow Perch fishing at Marys Lake
Spring yellow perch on Marys Lake hold shallow, usually 3 to 12 ft. By summer they slide out to 4 to 13 ft, and by winter most fish are in 4 to 13 ft. Deep basin is the standout, a deep basin at roughly 13 ft, rated prime for fall yellow perch. Plan around early morning in the warm months. 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 | 4 to 13 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 4 to 13 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 4 to 13 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Smallmouth Bass fishing at Marys Lake
In spring, smallmouth bass run shallow here, mostly 3 to 12 ft. By summer they slide out to 4 to 13 ft, and by winter most fish are in 4 to 13 ft. The spot to know is Main-lake point, a point in about 4 ft of water that rates prime for smallmouth bass in fall. Best bite is early morning and the evening. A drop shot (goby/minnow) or a ned rig covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | dawn & dusk | Ned rig, Tube jig |
| Summer | 4 to 13 ft | dawn & dusk | Drop shot (goby/minnow), Ned rig |
| Fall | 4 to 13 ft | midday & dawn | Jerkbait, Blade bait |
| Winter | 4 to 13 ft | midday | Blade bait, Hair jig |
Notable structure
- Deep basin: deep basin, around 13 ft
- Break off the point: drop-off, around 7 ft
- Main-lake point: point, around 4 ft
- Secondary point: point, around 2 ft
- Shallow bay flat: weed flat, around 2 ft
Common questions
How deep is Marys Lake?
Marys Lake is about 13 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 Marys Lake?
Anglers target smallmouth bass, walleye, northern pike, yellow perch on Marys Lake.
Where is the best fishing spot on Marys Lake?
Break off the point is the top-rated area: a drop-off in about 7 ft of water that rates prime for walleye in fall. Open the map above to see every rated spot for each species and season.
When is the best time to fish Marys Lake?
For walleye, the summer bite is best in the evening and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Eeyore Lake · Pooh Lake · Tigger Lake · Oval Lake · Puffball Lake · McKenna Lake
See how Marys Lake stacks up: best smallmouth bass lakes in Ontario · best walleye lakes in Ontario · best northern pike lakes in Ontario · best yellow perch lakes in Ontario
Browse all Ontario fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.