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105-acre lake in Algoma District, Ontario. The lake tops out around 46 ft. The depth data here comes from the Ontario MNRF survey of 1978, a decades-old survey (a transect sounding survey). Here is how the season plays out for each species, straight from the data behind the map.
Drawn out, this is 105 acres of water rimmed by 2.5 miles of bank — one island included. Index 1.8 on the shoreline: a few honest points and pockets, nothing labyrinthine. 39% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. The basin spans about 0.7 mi end to end and 0.4 mi across at its widest. The water lies in Algoma District. Closest neighbour on DepthScout: Canyon Lake, 2 mi east of here.
The spring pattern is a shallow one: brook trout in 2 to 15 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 3 to 20 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 2 ft of water that rates good for brook trout in spring. Plan around early morning and the evening in the warm months. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Shallow bay flat (2 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 | open water | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (2 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for rock bass tight to the bank in 2 to 10 ft. Expect a summer slide to 5 to 20 ft, then a winter hold in 12 to 30 ft. Start at Secondary point. It's a point holding about 21 ft of water and rates prime come summer. Prime time lands in 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 | open water | 1/16 oz jig + grub, Small inline spinner |
| Summer | 5 to 20 ft | dusk | Secondary point (21 ft) | Ned rig (small), Marabou jig |
| Fall | 8 to 22 ft | midday | Secondary point (21 ft) | Small tube jig, Inline spinner |
| Winter | 12 to 30 ft | midday | Deep basin (46 ft) | Tungsten jig + plastic, Small spoon + spike |
Count 6 structure marks on this chart. The deepest, Deep basin, sits near 46 ft.
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 Sheriff Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Sheriff Lake is about 46 ft (14 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1978, a decades-old survey (a transect sounding survey).
Anglers target brook trout, rock bass on Sheriff Lake.
Secondary point is the top-rated area: a point in about 21 ft of water that rates prime for rock bass in summer. Open the map above to see every rated spot for each species and season.
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 Sheriff 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.
Canyon Lake 2 mi · Strouth Lake 2 mi · Horne Lake 2 mi · Gunterman L. 19 2 mi · McCabe Lake 2 mi · Gunterman L. 8 2 mi · Porridge Lake 2 mi · Ryan Lake 3 mi · Elephant Lake 3 mi · Flying Goose Lake 3 mi · Pear L. 3 mi · Nordic Lake 3 mi
See how Sheriff Lake stacks up: best brook trout lakes in Ontario · best rock bass 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.