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63-acre lake in Renfrew County, Ontario. The lake tops out around 36 ft. The depth data here comes from the Ontario MNRF survey of 1970, a decades-old survey (a transect sounding survey). The rest of this page walks each species through its year, using the map's own scoring.
The drawn water covers 63 acres wrapped in 1.8 miles of bank, with a single island in the mix. A middling shoreline index (1.6) gives it some bays to work without being a maze. Littoral water — the productive band under ~15 ft — makes up 69% of this chart. Call it 0.6 mi long by 0.3 mi wide at the broadest reach. Renfrew County claims this one. Valiant Lake sits 1 mi west — the closest neighbouring chart.
Early season splake use the shallows, holding in 5 to 25 ft. Summer is an 11 to 36 ft game here, winter an 8 to 36 ft one. The chart's best answer is Break off the point — drop-off, 14 ft, prime for summer. Best bite is early morning and the evening. Tie on a trolled spoon at the thermocline or a white tube jig (deep) and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Main-lake point (5 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 11 to 36 ft | dawn & dusk | Break off the point (14 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 10 to 35 ft | dawn & dusk | Break off the point (14 ft) | Casting spoon, Jerkbait |
| Winter | 8 to 36 ft | dawn | Break off the point (14 ft) | Jigging spoon tipped with minnow head, Small white tube |
In spring, yellow perch run shallow here, mostly 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 15 to 35 ft. Deep basin is the standout, a deep basin at roughly 36 ft, rated prime for fall yellow perch. Time it for early morning. You won't need more than a drop-shot micro plastics or a small spoon tipped with worm most summer days.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (2 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Break off the point (14 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Deep basin (36 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Deep basin (36 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Structure-wise the chart holds 5 features, led in depth by Deep basin at roughly 36 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 Mousseau Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Mousseau Lake is about 36 ft (11 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 splake, yellow perch on Mousseau Lake.
Break off the point is the top-rated area: a drop-off in about 14 ft of water that rates prime for splake in summer. The map above holds the full rated-spot list for every species and season.
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 Mousseau 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.
Valiant Lake 1 mi · Little Marten Lake 2 mi · Big Shingle Lake 2 mi · Harveys Shanty Lake 3 mi · Stoney Lake 3 mi · Piglet Lake 3 mi · Billys Lake 4 mi · Christopher Robin Lake 4 mi · Gardiner Lake 4 mi · Adelard Lake 5 mi · Rattail Lake 5 mi · Owl Lake 5 mi
See how Mousseau Lake stacks up: best yellow perch lakes in Ontario · best splake lakes in Ontario
More water nearby: Renfrew County fishing maps (298 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.