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43-acre lake in Algoma District, Ontario. The lake tops out around 75 ft. The depth data here comes from the Ontario MNRF survey of 1972, a decades-old survey (a transect sounding survey). What the data behind the map says about each species, season by season:
The drawn water covers 43 acres wrapped in 1.6 miles of bank. With a 1.7 development index there's bank structure worth casting at, in moderation. 30% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Call it 0.5 mi long by 0.3 mi wide at the broadest reach. It sits in Algoma District. If the bite dies, Beilhartz Lake is 2 mi to the west.
Spring brook trout on Arthur Lake hold shallow, usually 2 to 15 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 3 to 20 ft. The chart's best answer is Secondary point — point, 5 ft, prime for spring. Prime time lands in early morning and the evening. The summer box starts with a small spoon fished deep or a trolled lake-clear wobbler + worm.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Secondary point (5 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | open water | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Secondary point (5 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (3 ft) | Small jigging spoon, Tungsten jig + plastic |
Arthur Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 71 ft down.
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 Arthur Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Arthur Lake is about 75 ft (23 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1972, a decades-old survey (a transect sounding survey).
Anglers target brook trout on Arthur Lake.
Secondary point is the top-rated area: a point in about 5 ft of water that rates prime for brook trout in spring. Every other rated spot, per species and season, is on the map above.
For brook trout, the summer bite is best in early morning and the evening. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Arthur 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.
Beilhartz Lake 2 mi · Seven Camp Lake 2 mi · Jimmy Lake 2 mi · Indigo L. 3 mi · Little Lafoe Lake 3 mi · Wakomata Lake 4 mi · Jellybean L. 4 mi · Squawk L. 4 mi · Damn Lake 4 mi · Long-tail L. 4 mi · Burden Lake 5 mi · Jobammageeshig Lake 5 mi
See how Arthur Lake stacks up: best brook trout lakes in Ontario
More water nearby: Algoma District fishing maps (1026 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.