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Rating depth structure for splake.
Shared by DepthScout anglers. Exact spots stay private, always.
22-acre lake in Sudbury District, Ontario. The lake tops out around 48 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from the Ontario MNRF survey of 2025 (an MNRF lake survey). What follows comes from the same scoring engine that paints the spots above.
McNaught L. 7 maps at 21 acres behind 1 miles of shoreline. With a 1.5 development index there's bank structure worth casting at, in moderation. About 46% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 0.4 mi long. Sudbury District claims this one. Foot Lake sits 0 mi southwest — the closest neighbouring chart.
When the water first warms, splake slide up into 5 to 25 ft. Summer is a 14 to 48 ft game here, winter a 10 to 45 ft one. Start at Deep basin. It's a deep basin holding about 48 ft of water and rates prime come summer. The feeding windows run early morning and the evening. Keep a trolled spoon at the thermocline or a white tube jig (deep) rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 5 to 25 ft | dawn & dusk | Main-lake point (8 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 14 to 48 ft | dawn & dusk | Deep basin (48 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 10 to 35 ft | dawn & dusk | Main-lake point (8 ft) | Casting spoon, Jerkbait |
| Winter | 10 to 45 ft | dawn | Deep basin (48 ft) | Jigging spoon tipped with minnow head, Small white tube |
McNaught L. 7 carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 48 ft down.
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 McNaught L. 7 specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
McNaught L. 7 is about 48 ft (15 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 2025 (an MNRF lake survey).
Anglers target splake on McNaught L. 7.
Deep basin is the top-rated area: a deep basin in about 48 ft of water that rates prime for splake in summer. The interactive chart above rates every spot for each 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 McNaught L. 7 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.
Foot Lake 0 mi · Serviss Lake 2 mi · Lower Cachege Lake 2 mi · Cecile Lake 3 mi · Emerald Lake (lac Emerald) 3 mi · Matti L. 3 mi · Le Blanc Lake 4 mi · Borden Lake 4 mi · Westover Lake 5 mi · Lackner Lake 5 mi · Dace Lake 5 mi · Waweya Lake 6 mi
See how McNaught L. 7 stacks up: best splake lakes in Ontario
More water nearby: Sudbury District fishing maps (868 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. 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.