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Recent public catches load as you reach this section.
93-acre lake in Algoma District, Ontario. The lake tops out around 90 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from the Ontario MNRF survey of 1966, a decades-old survey (a transect sounding survey). Below is the species-by-species picture, pulled from the same data the map uses.
On the chart, Square Lake draws 93 acres inside 1.9 miles of shoreline. A shoreline index of 1.4 says round and simple: fish relate to depth changes here, not shoreline features. The shallow band under 15 ft claims about 11% of the surface — that's where the groceries are. The basin spans about 0.7 mi end to end and 0.4 mi across at its widest. You'll find it in Algoma District. For a second option, Red L. lies 1 mi northeast.
These fish are listed in an exact-water agency record as forage or ecological context. They are not target-species profiles and do not affect DepthScout's Prime, Good, or Fair spot ratings.
Official Ontario MNRF Fish ON-Line record. The listing documents source-recorded presence, not present abundance or guaranteed catchability.
Spring walleye on Square Lake hold shallow, usually 4 to 15 ft. By summer they slide out to 15 to 35 ft, and by winter most fish are in 20 to 40 ft. The chart's best answer is Break off the point — drop-off, 36 ft, prime for fall. Prime time lands in the evening and early morning. The summer box starts with a crawler harness on bottom bouncer or a deep crankbait (trolled).
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | Main-lake point (14 ft) | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Break off the point (36 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Break off the point (36 ft) | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Break off the point (36 ft) | Jigging spoon + minnow head, Rattle bait |
Spring puts rainbow smelt in skinny water — 2 to 20 ft is the zone. Warm water sends them out to 25 to 80 ft; cold water stacks them in 15 to 60 ft. Deep basin is the standout, a deep basin at roughly 90 ft, rated prime for summer rainbow smelt. Plan around early morning and the evening in the warm months. A tiny vertical jig or a small sabiki-style rig where legal covers the summer program.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 20 ft | night & dusk | Shallow bay flat (10 ft) | Tiny silver jig, Micro spoon |
| Summer | 25 to 80 ft | dawn & dusk | Deep basin (90 ft) | Tiny vertical jig, Small sabiki-style rig where legal |
| Fall | 18 to 65 ft | dusk & dawn | Break off the point (36 ft) | Micro spoon, Tiny jig |
| Winter | 15 to 60 ft | dusk | Break off the point (36 ft) | Tiny glow jig, Micro jigging spoon |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 90 ft.
Access data: Geospatial Ontario - Fishing Access Points; Government of Ontario - MNR Unpatented Crown Land Shoreline; Government of Ontario - MNR Unpatented Crown Land Shoreline. Confirm conditions and fees locally before you launch.
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 90 ft (27 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1966, a decades-old survey (a transect sounding survey).
Anglers target walleye, rainbow smelt on Square Lake.
Break off the point is the top-rated area: a drop-off in about 36 ft of water that rates prime for walleye in fall. Scroll up to the map for the complete spot list by species and season.
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.
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.
Red L. 1 mi · Mud Lake 1 mi · Tee Lake 2 mi · Clara Lake 2 mi · West Ritchie Lake 2 mi · Sam Lake 3 mi · Stewleen Lake 3 mi · Reed Lake 3 mi · Finger Lake 3 mi · Salvage Lake 3 mi · Crystal Lake 3 mi · Winchester Lake 3 mi
See how Square Lake stacks up: best walleye lakes in Ontario
More water nearby: Algoma District fishing maps (1026 charts). Browse all Ontario fishing maps. See every water on DepthScout. Bathymetry: published agency survey data. 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.