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30-acre lake in Frontenac County, Ontario. The lake tops out around 25 ft. The depth data here comes from the Ontario MNRF survey of 1975, a decades-old survey (a transect sounding survey). Species by species, here's what the data says the year looks like.
Traced from the shoreline, Little Mosque Lake runs 31 acres with 1.4 miles of edge, with a single island in the mix. Index 1.8 on the shoreline: a few honest points and pockets, nothing labyrinthine. 75% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. End to end it runs roughly 0.5 mi. The water lies in Frontenac County. The nearest mapped water is Grindstone Lake, 1 mi to the northwest.
The spring pattern is a shallow one: brook trout in 2 to 15 ft. Midsummer fish sit out in 8 to 25 ft before dropping to 3 to 20 ft for winter. The spot to know is Deep basin, a deep basin in about 23 ft of water that rates prime for brook trout in summer. 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 | Main-lake point (2 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 8 to 25 ft | dawn & dusk | Deep basin (23 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (2 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (3 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for pumpkinseed tight to the bank in 1 to 8 ft. Expect a summer slide to 2 to 10 ft, then a winter hold in 6 to 18 ft. Start at Shallow bay flat. It's a weed flat holding about 5 ft of water and rates prime come spring. Prime time lands in the evening and early morning. A micro tube or a sponge spider (fly) is the honest summer answer here.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 1 to 8 ft | midday & dusk | Shallow bay flat (5 ft) | Micro jig under a float, Tiny beetle-spin |
| Summer | 2 to 10 ft | dusk & dawn | Shallow bay flat (5 ft) | Micro tube, Sponge spider (fly) |
| Fall | 4 to 14 ft | dusk & dawn | Shallow bay flat (5 ft) | Micro jig + waxworm, Small spoon tipped |
| Winter | 6 to 18 ft | dawn | Shallow bay flat (5 ft) | Tungsten ice jig + plastic, Tiny spoon |
Little Mosque Lake carries 5 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 23 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 Little Mosque Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Little Mosque Lake is about 25 ft (8 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1975, a decades-old survey (a transect sounding survey).
Anglers target brook trout, pumpkinseed on Little Mosque Lake.
Shallow bay flat is the top-rated area: a weed flat in about 5 ft of water that rates prime for pumpkinseed 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 Little Mosque 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.
Grindstone Lake 1 mi · Mosque Lake 1 mi · Little Green Lake 4 mi · Palmerston Lake 4 mi · Crib Lake 5 mi · Summit Lake 6 mi · Mackie Lake 6 mi · Granite Lake 6 mi · Brule Lake 6 mi · Ardoch Lake 6 mi · Buckshot Lake 6 mi · Wolfe Lake 7 mi
See how Little Mosque Lake stacks up: best brook trout 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 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.