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37-acre lake in Renfrew County, Ontario. The lake tops out around 53 ft. The depth data here comes from the Ontario MNRF survey of 1985 (a transect sounding survey). What the data behind the map says about each species, season by season:
Drawn out, this is 37 acres of water rimmed by 1.4 miles of bank. Index 1.6 on the shoreline: a few honest points and pockets, nothing labyrinthine. Roughly 38% of the water is 15 ft or less, the band where the food chain lives. Tip to tip the water measures near 0.5 mi with a 0.3-mi widest point. You'll find it in Renfrew County. The nearest mapped water is Adelard Lake, 1 mi to the east.
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. The spot to know is Break off the point, a drop-off in about 12 ft of water that rates prime for brook trout in summer. Warm-month bites cluster around early morning and the evening. Throw a small spoon fished deep or a trolled lake-clear wobbler + worm until the fish tell you otherwise.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 15 ft | dawn & dusk | Main-lake point (4 ft) | Small inline spinner (gold), Tiny spoon |
| Summer | 10 to 30 ft | dawn & dusk | Break off the point (12 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Fall | 2 to 15 ft | midday & dawn | Main-lake point (4 ft) | Small spoon (orange), Spinner |
| Winter | 3 to 20 ft | dawn | Break off the point (12 ft) | Small jigging spoon, Tungsten jig + plastic |
5 pieces of structure are mapped here — Deep basin, around 51 ft, is the deepest of them.
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 Billys Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Billys Lake is about 53 ft (16 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1985 (a transect sounding survey).
Anglers target brook trout on Billys Lake.
Break off the point is the top-rated area: a drop-off in about 12 ft of water that rates prime for brook trout in summer. The map above holds the full rated-spot list for every 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 Billys 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.
Adelard Lake 1 mi · McSourley Lake 2 mi · Mousseau Lake 4 mi · Valiant Lake 4 mi · Owl Lake 5 mi · Piglet Lake 5 mi · Marys Lake 6 mi · Big Shingle Lake 6 mi · Little Marten Lake 6 mi · Perch Lake 6 mi · Christopher Robin Lake 6 mi · Stoney Lake 7 mi
See how Billys Lake stacks up: best brook trout 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.