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Fishing Square Lake: what the data says
629-acre lake near Ontario. The lake tops out around 49 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Below is the species-by-species picture, pulled from the same data the map uses.
Cisco (Lake Herring) fishing at Square Lake
Start shallow in spring: cisco (lake herring) sit in 10 to 40 ft that time of year. They move out to 15 to 49 ft in summer and finish the year down in 15 to 49 ft. If you only fish one area, make it Deep basin: a deep basin around 42 ft that scores prime in summer. Plan around early morning in the warm months. A vertical flutter spoon (small) or a drop-shot micro plastic covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Small silver spoon, Tiny swim jig (white) |
| Summer | 15 to 49 ft | dawn | Vertical flutter spoon (small), Drop-shot micro plastic |
| Fall | 5 to 25 ft | dusk & dawn | Small casting spoon, Inline spinner (silver) |
| Winter | 15 to 49 ft | dawn | Small jigging spoon (glow/silver), Tungsten jig + minnow head |
Yellow Perch fishing at Square Lake
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. They move out to 10 to 30 ft in summer and finish the year down in 15 to 35 ft. Shallow bay flat is the standout, a weed flat at roughly 6 ft, rated prime for spring yellow perch. In summer the feeding windows fall in early morning. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Northern Pike fishing at Square Lake
Spring northern pike on Square Lake hold shallow, usually 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. The spot to know is Shallow bay flat, a weed flat in about 6 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 | 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 |
Burbot fishing at Square Lake
Start shallow in spring: burbot sit in 15 to 49 ft that time of year. Summer fish stay in 15 to 49 ft, and winter fish hold in 12 to 49 ft. Deep basin is the standout, a deep basin at roughly 42 ft, rated prime for spring burbot. Plan around after dark and midday in the warm months. A heavy jig + cut bait covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 15 to 49 ft | night & dusk | Glow jigging spoon + cut bait, Rattle bait (dark) |
| Summer | 15 to 49 ft | night & midday | Heavy jig + cut bait |
| Fall | 15 to 49 ft | night & dusk | Glow spoon + minnow head, Blade bait (slow) |
| Winter | 12 to 49 ft | night & dusk | Glow tungsten + cut bait, Rattle spoon + minnow head |
Notable structure
- Deep basin: deep basin, around 42 ft
- Break off the point: drop-off, around 22 ft
- Main-lake point: point, around 12 ft
- Secondary point: point, around 12 ft
- Shallow bay flat: weed flat, around 6 ft
- Back-bay flat: weed flat, around 6 ft
Common questions
How deep is Square Lake?
Square Lake is about 49 ft 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.
What fish are in Square Lake?
Anglers target northern pike, yellow perch, burbot, cisco (lake herring) on Square Lake.
Where is the best fishing spot on Square Lake?
Deep basin is the top-rated area: a deep basin in about 42 ft of water that rates prime for cisco (lake herring) in summer. Open the map above to see every rated spot for each species and season.
When is the best time to fish Square Lake?
For cisco (lake herring), 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.
Nearby waters
Ostrum Lake · Godden Lake · Reguly Lake · Arethusa Lake · Snowstorm Lake · Little Snowstorm Lake
See how Square Lake stacks up: best northern pike lakes in Ontario · best yellow perch lakes in Ontario · best burbot lakes in Ontario · best cisco (lake herring) lakes in Ontario
Browse all Ontario fishing maps or every water on DepthScout. How we build these maps. For fishing guidance only, never navigation.