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8-acre lake in Parry Sound District, Ontario. The lake tops out around 13 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. The rest of this page walks each species through its year, using the map's own scoring.
On the chart, Square Lake draws 8 acres inside 0.5 miles of shoreline. A shoreline index of 1.2 says round and simple: fish relate to depth changes here, not shoreline features. Every acre of it sits shallower than ~15 ft: one big littoral zone, cover and forage throughout. You'll find it in Parry Sound District. For a second option, Raby Lake lies 1 mi northwest.
Early season yellow perch use the shallows, holding in 3 to 12 ft. Summer is a 4 to 13 ft game here, winter a 4 to 13 ft one. The chart's best answer is Deep basin — deep basin, 11 ft, prime for fall. Best bite is early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | open water | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 4 to 13 ft | dawn | Deep basin (11 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 4 to 13 ft | midday | Deep basin (11 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 4 to 13 ft | midday & dawn | Deep basin (11 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Come spring, look for rock bass tight to the bank in 2 to 10 ft. They move out to 3 to 13 ft in summer and finish the year down in 4 to 13 ft. If you only fish one area, make it Main-lake point: a point around 8 ft that scores prime in summer. Best bite is the evening. A ned rig (small) or a marabou jig is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 10 ft | midday & dawn | Main-lake point (8 ft) | 1/16 oz jig + grub, Small inline spinner |
| Summer | 3 to 13 ft | dusk | Main-lake point (8 ft) | Ned rig (small), Marabou jig |
| Fall | 4 to 13 ft | midday | Break off the point (6 ft) | Small tube jig, Inline spinner |
| Winter | 4 to 13 ft | midday | Deep basin (11 ft) | Tungsten jig + plastic, Small spoon + spike |
In spring, crappie run shallow here, mostly 2 to 8 ft. Midsummer fish sit out in 4 to 13 ft before dropping to 4 to 13 ft for winter. Winter crappie concentrate at Deep basin, a prime-rated deep basin around 11 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a jig trolled/spider-rigged or a small crankbait (trolled) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | open water | 1/16 oz jig + tube, Curly-tail grub |
| Summer | 4 to 13 ft | dawn & dusk | Break off the point (6 ft) | Jig trolled/spider-rigged, Small crankbait (trolled) |
| Fall | 4 to 13 ft | dawn | Break off the point (6 ft) | Jig + minnow combo, Small swimbait (1.5-2") |
| Winter | 4 to 13 ft | midday | Deep basin (11 ft) | Tungsten jig + soft plastic, Tiny jigging spoon |
Come spring, look for pumpkinseed tight to the bank in 1 to 8 ft. They move out to 2 to 10 ft in summer and finish the year down in 4 to 13 ft. If you only fish one area, make it Deep basin: a deep basin around 11 ft that scores prime in winter. Best bite is the evening and early morning. A micro tube or a sponge spider (fly) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | open water | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | open water | Micro tube, Sponge spider (fly) |
| Fall | 4 to 13 ft | dusk & dawn | Break off the point (6 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 4 to 13 ft | dawn | Deep basin (11 ft) | Tungsten ice jig + plastic, Tiny spoon |
Start shallow in spring: brown bullhead sit in 2 to 8 ft that time of year. Warm water sends them out to 3 to 12 ft; cold water stacks them in 4 to 13 ft. Top water on the chart: Deep basin, a deep basin in the 11 ft range, prime in winter. Fish it in after dark and the evening and you'll meet the bite.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | open water | |
| Summer | 3 to 12 ft | night & dusk | Deep basin (11 ft) | |
| Fall | 4 to 13 ft | dusk | Deep basin (11 ft) | |
| Winter | 4 to 13 ft | midday | Deep basin (11 ft) |
3 pieces of structure are mapped here — Deep basin, around 11 ft, is the deepest of them.
Season dates, license requirements, and size and bag limits for Ontario waters are set by the Ontario fishing regulations (FMZ summary) — and special regulations can apply to Square Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Square Lake is about 13 ft (4 m) deep 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.
Anglers target yellow perch, rock bass, crappie, pumpkinseed, brown bullhead on Square Lake.
Deep basin is the top-rated area: a deep basin in about 11 ft of water that rates prime for yellow perch in fall. The interactive chart above rates every spot for each species and season.
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.
Fishing on Square Lake is regulated by the Ontario fishing regulations (FMZ summary). Check the official Ontario regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Raby Lake 1 mi · Green Bass L. 2 mi · Northmore Lake 3 mi · Shebeshekong Lake 3 mi · Cole Lake 4 mi · Dinner Lake 6 mi · Georgian Bay - Parry Sound 6 mi · Lockett Lake 6 mi · Carling L. K4 7 mi · Redfern Lake 7 mi · Imrie Lake 7 mi · Wiwassasegen Lake 8 mi
See how Square Lake stacks up: best crappie lakes in Ontario · best yellow perch lakes in Ontario · best rock bass lakes in Ontario · best pumpkinseed lakes in Ontario
More water nearby: Parry Sound District fishing maps (441 charts). Browse all Ontario fishing maps or see every water on DepthScout. 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.