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Rating depth structure for brown bullhead.
Shared by DepthScout anglers. Exact spots stay private, always.
15-acre lake in Parry Sound District, Ontario. The lake tops out around 29 ft. The depth picture is modeled, anchored to the true shoreline and the water's published max depth — a scouting aid, never a chart to run a boat by. Here's the year, species by species, as the scoring engine sees it.
On the chart, McGuire Lake draws 15 acres inside 1 miles of shoreline. Index 1.8 on the shoreline: a few honest points and pockets, nothing labyrinthine. Littoral water — the productive band under ~15 ft — makes up 60% of this chart, as modeled. Figure 0.4 mi of water from one end to the other. The water lies in Parry Sound District. The nearest mapped water is Finger Lake, 1 mi to the south.
The spring pattern is a shallow one: brown bullhead in 2 to 8 ft. As the season builds they drop to 3 to 12 ft, wintering in 10 to 25 ft. Top water on the chart: Deep basin, a deep basin in the 25 ft range, prime in winter. Time it for after dark and the evening.
| 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 | 10 to 25 ft | midday | Deep basin (25 ft) |
Structure-wise the chart holds 4 features, led in depth by Deep basin at roughly 25 ft.
Access data: Geospatial Ontario - Fishing Access Points. Confirm conditions and fees locally before you launch.
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 McGuire Lake specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
McGuire Lake is about 29 ft (9 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 brown bullhead on McGuire Lake.
Deep basin is the top-rated area: a deep basin in about 25 ft of water that rates prime for brown bullhead in winter. Open the map above to see every rated spot for each species and season.
For brown bullhead, the summer bite is best in after dark 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 McGuire 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.
Finger Lake 1 mi · Graphite Lake 1 mi · Odiekirk L. 2 mi · Windfall Lake 2 mi · Charlie's Lake 2 mi · Sugar Bush Lake 2 mi · Burnt Lake 2 mi · Mining Corporation Lake 3 mi · Tim Lake 3 mi · Nabdoe L. 3 mi · Pine Lake 3 mi · Rocky L. 3 mi
See how McGuire Lake stacks up: best brown bullhead lakes in Ontario
More water nearby: Parry Sound District fishing maps (441 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.