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Shared by DepthScout anglers. Exact spots stay private, always.
91-acre lake in Nipissing District, Ontario. The lake tops out around 22 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. Here's the year, species by species, as the scoring engine sees it.
Drawn out, this is 90 acres of water rimmed by 1.6 miles of bank. A shoreline index of 1.2 says round and simple: fish relate to depth changes here, not shoreline features. Littoral water — the productive band under ~15 ft — makes up 80% of this chart, as modeled. The basin spans about 0.6 mi end to end and 0.4 mi across at its widest. You'll find it in Nipissing District. Closest neighbour on DepthScout: Wright Lake, 1 mi southwest of here.
Spring yellow perch on Bonfield Lake hold shallow, usually 3 to 12 ft. They move out to 7 to 22 ft in summer and finish the year down in 7 to 22 ft. Put Shallow bay flat first on the milk run — a weed flat near 3 ft that grades prime for spring. The feeding windows run early morning. The summer box starts with a drop-shot micro plastics or a small spoon tipped with worm.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Shallow bay flat (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 7 to 22 ft | dawn | Deep basin (19 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 7 to 22 ft | midday | Deep basin (19 ft) | Jigging spoon (small), Perch rig / spreader |
| Winter | 7 to 22 ft | midday & dawn | Deep basin (19 ft) | Tungsten jig + spikes, Rattle spoon (small) |
The spring pattern is a shallow one: brown bullhead in 2 to 8 ft. Midsummer fish sit out in 3 to 12 ft before dropping to 7 to 22 ft for winter. The spot to know is Deep basin, a deep basin in about 19 ft of water that rates prime for brown bullhead in winter. Plan around after dark and the evening in the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 2 to 8 ft | dusk & night | Shallow bay flat (3 ft) | |
| Summer | 3 to 12 ft | night & dusk | Shallow bay flat (3 ft) | |
| Fall | 5 to 15 ft | dusk | Shallow bay flat (3 ft) | |
| Winter | 7 to 22 ft | midday | Deep basin (19 ft) |
5 pieces of structure are mapped here — Deep basin, around 19 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 Bonfield Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Bonfield Lake is about 22 ft (7 m) deep at its deepest point. The contours here are modeled from the water's real shape and maximum depth, so treat them as a rough guide.
Anglers target yellow perch, brown bullhead on Bonfield Lake.
Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for yellow perch in spring. The interactive chart above rates every spot for each species and season.
For yellow perch, the summer bite is best in early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Fishing on Bonfield 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.
Wright Lake 1 mi · Thomas Lake 4 mi · Round Island Lake 4 mi · Tip Up Lake 5 mi · Dickson Lake 5 mi · Little Mykiss Lake 6 mi · Little Dickson Lake 6 mi · Proulx Lake 6 mi · Opeongo Lake 6 mi · Chipmunk Lake 6 mi · Little Crooked Lake 6 mi · Lake Lavieille 6 mi
See how Bonfield Lake stacks up: best yellow perch lakes in Ontario · best brown bullhead lakes in Ontario
More water nearby: Nipissing District fishing maps (683 charts). Browse all Ontario fishing maps or see every water on DepthScout. 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.