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48-acre lake in Parry Sound District, Ontario. The lake tops out around 70 ft. The depth data here comes from the Ontario MNRF survey of 1970, a decades-old survey (a transect sounding survey). Here's the year, species by species, as the scoring engine sees it.
On the chart, Whetstone Lake draws 49 acres inside 1.6 miles of shoreline, broken up by 2 islands. The shoreline is moderately structured (index 1.7) — enough points and pockets to pattern. The shallow band under 15 ft claims about 24% of the surface — that's where the groceries are. Figure 0.4 mi of water from one end to the other, 0.4 mi at the beam. You'll find it in Parry Sound District. The nearest mapped water is Lower Raven Lake, 1 mi to the west.
In spring, brook trout run shallow here, mostly 2 to 15 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. Secondary point is the standout, a point at roughly 13 ft, rated prime for spring brook trout. Time it for early morning and the evening. You won't need more than a small spoon fished deep or a trolled lake-clear wobbler + worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Secondary point (13 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 (13 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Shallow bay flat (12 ft) | Small jigging spoon, Tungsten jig + plastic |
Structure-wise the chart holds 5 features, led in depth by Deep basin at roughly 67 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 Whetstone Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Whetstone Lake is about 70 ft (21 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1970, a decades-old survey (a transect sounding survey).
Anglers target brook trout on Whetstone Lake.
Secondary point is the top-rated area: a point in about 13 ft of water that rates prime for brook trout in spring. 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 Whetstone 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.
Lower Raven Lake 1 mi · Rocky L. 1 mi · Upper Raven Lake 2 mi · Buck Lake 2 mi · Nabdoe L. 2 mi · Long Lake 3 mi · Burnt Lake 3 mi · Finger Lake 3 mi · Odiekirk L. 3 mi · Middle Shanty Lake 3 mi · Graphite Lake 3 mi · Little Patterson Lake 4 mi
See how Whetstone Lake stacks up: best brook trout lakes in Ontario
More water nearby: Parry Sound District fishing maps (441 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.