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Rating depth structure for splake.
Recent public catches load as you reach this section.
64-acre lake in Frontenac County, Ontario. The lake tops out around 35 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 1962, a decades-old survey (a transect sounding survey). Species by species, here's what the data says the year looks like.
Drawn out, this is 64 acres of water rimmed by 1.9 miles of bank. The shoreline is moderately structured (index 1.7) — enough points and pockets to pattern. About 16% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 0.7 mi long by 0.3 mi wide at the broadest reach. You'll find it in Frontenac County. For a second option, Crib Lake lies 1 mi south.
In spring, splake run shallow here, mostly 5 to 25 ft. Midsummer fish sit out in 11 to 35 ft before dropping to 8 to 35 ft for winter. Summer splake concentrate at Break off the point, a prime-rated drop-off around 31 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a trolled spoon at the thermocline or a white tube jig (deep) most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Main-lake point (15 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 11 to 35 ft | dawn & dusk | Break off the point (31 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (15 ft) | Casting spoon, Jerkbait |
| Winter | 8 to 35 ft | dawn | Break off the point (31 ft) | Jigging spoon tipped with minnow head, Small white tube |
Early season pumpkinseed use the shallows, holding in 1 to 8 ft. Summer is a 2 to 10 ft game here, winter a 6 to 18 ft one. The chart's best answer is Back-bay flat — feeding flat, 10 ft, prime for summer. Best bite is the evening and early morning. Tie on a micro tube or a sponge spider (fly) and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Back-bay flat (10 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Back-bay flat (10 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Shallow bay flat (13 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Shallow bay flat (13 ft) | Tungsten ice jig + plastic, Tiny spoon |
6 pieces of structure are mapped here — Deep basin, around 35 ft, is the deepest of them.
Access data: Geospatial Ontario - Fishing Access Points. 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 Granite Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Granite Lake is about 35 ft (11 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1962, a decades-old survey (a transect sounding survey).
Anglers target splake, pumpkinseed on Granite Lake.
Break off the point is the top-rated area: a drop-off in about 31 ft of water that rates prime for splake in summer. Every other rated spot, per species and season, is on the map above.
For splake, 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 Granite 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.
Crib Lake 1 mi · Summit Lake 2 mi · Wolfe Lake 2 mi · Palmerston Lake 3 mi · Canonto Lake 3 mi · Mair Lake 3 mi · Redhorse Lake 4 mi · Mosque Lake 5 mi · Grindstone Lake 6 mi · Little Mosque Lake 6 mi · Govan Lake 6 mi · Mackie Lake 6 mi
See how Granite Lake stacks up: best splake lakes in Ontario · best pumpkinseed lakes in Ontario
More water nearby: Frontenac County fishing maps (127 charts). Browse all Ontario fishing maps or 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.