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75-acre lake in Haliburton County, Ontario. The lake tops out around 33 ft. The depth data here comes from the Ontario MNRF survey of 1989 (a transect sounding survey). Species by species, here's what the data says the year looks like.
The drawn water covers 75 acres wrapped in 3.6 miles of bank, with 9 islands in the mix. An index of 2.9 puts the bank firmly in maze territory: point after pocket after cove, every one a casting target. The shallow band under 15 ft claims about 78% of the surface — that's where the groceries are. Call it 0.6 mi long by 0.4 mi wide at the broadest reach. Haliburton County claims this one. If the bite dies, Circular Lake is 2 mi to the northwest.
Spring rainbow trout on Sprat Lake hold shallow, usually 5 to 20 ft. They move out to 8 to 30 ft in summer and finish the year down in 7 to 33 ft. Put Break off the point first on the milk run — a drop-off near 25 ft that grades prime for winter. The feeding windows run early morning and the evening. The summer box starts with a dodger + spoon (deep troll) or a flutter spoon.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 20 ft | dawn & dusk | Main-lake point (1 ft) | Inline spinner (silver), Small spoon |
| Summer | 8 to 30 ft | dawn & dusk | Break off the point (25 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 9 to 33 ft | dawn & dusk | Break off the point (25 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 7 to 33 ft | dawn | Break off the point (25 ft) | Jigging spoon, Tube jig (white) |
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 33 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 Sprat Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Sprat Lake is about 33 ft (10 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1989 (a transect sounding survey).
Anglers target rainbow trout on Sprat Lake.
Break off the point is the top-rated area: a drop-off in about 25 ft of water that rates prime for rainbow trout in winter. The map above holds the full rated-spot list for every species and season.
For rainbow 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 Sprat 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.
Circular Lake 2 mi · South Jean Lake 2 mi · Tingey Lake 2 mi · Big Orillia Lake 2 mi · Teapot Lake 2 mi · Blue Jay L. 3 mi · Little Orillia Lake 3 mi · Saucer Lake 3 mi · Goodman Lake 3 mi · Jill Lake 3 mi · South McDonald Lake 3 mi · Campstool Lake 3 mi
See how Sprat Lake stacks up: best rainbow trout lakes in Ontario
More water nearby: Haliburton County fishing maps (295 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.