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Rating depth structure for rainbow trout.
Shared by DepthScout anglers. Exact spots stay private, always.
23-acre lake in Sudbury District, Ontario. The lake tops out around 14 ft. This chart interpolates between a real shoreline and a known maximum depth. It will point you at likely water, but it is not a navigation product. The rest of this page walks each species through its year, using the map's own scoring.
The drawn water covers 23 acres wrapped in 0.8 miles of bank. At index 1.1 the outline is almost a bowl — read the depth changes, not the shoreline. Nothing on this chart breaks 15 ft, which makes the whole surface littoral: weeds, bait and ambush cover everywhere. Call it 0.3 mi long by 0.2 mi wide at the broadest reach. It sits in Sudbury District. Rock Lake sits 0 mi south — the closest neighbouring chart.
Early season splake use the shallows, holding in 3 to 14 ft. Even in summer they hold at 4 to 14 ft; winter keeps them in 3 to 14 ft. Put Shoreline break first on the milk run — a drop-off near 6 ft that grades prime for summer. In summer the feeding windows fall in early morning and the evening. Tie on a trolled spoon at the thermocline or a white tube jig (deep) and you're in the game.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 3 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Small casting spoon (gold/orange), Inline spinner |
| Summer | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Trolled spoon at the thermocline, White tube jig (deep) |
| Fall | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Casting spoon, Jerkbait |
| Winter | 3 to 14 ft | dawn | Shoreline break (6 ft) | Jigging spoon tipped with minnow head, Small white tube |
When the water first warms, rainbow trout slide up into 4 to 14 ft. There's no big seasonal slide here — summer means 4 to 14 ft, winter 3 to 14 ft. If you only fish one area, make it Shoreline break: a drop-off around 6 ft that scores prime in winter. In summer the feeding windows fall in early morning and the evening. Keep a dodger + spoon (deep troll) or a flutter spoon rigged through the warm months.
| Season | Depth | Best window | Start at | Go-to baits |
|---|---|---|---|---|
| Spring | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Inline spinner (silver), Small spoon |
| Summer | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Fall | 4 to 14 ft | dawn & dusk | Shoreline break (6 ft) | Casting spoon, Jerkbait over shoals |
| Winter | 3 to 14 ft | dawn | Shoreline break (6 ft) | Jigging spoon, Tube jig (white) |
Structure-wise the chart holds 4 features, led in depth by Deep basin at roughly 12 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 Nairn L. 28 specifically, so confirm the current rules before you fish.
Check the official Ontario fishing regulations →
Nairn L. 28 is about 14 ft (4 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 splake, rainbow trout on Nairn L. 28.
Shoreline break is the top-rated area: a drop-off in about 6 ft of water that rates prime for splake in summer. The map above holds the full rated-spot list for every 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 Nairn L. 28 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.
Rock Lake 0 mi · Lake of the Mountains 2 mi · Tenho Lake 2 mi · Pomfrey Lake 3 mi · Jiggy Lake 4 mi · Agnew Lake 4 mi · Wabagishik Lake 5 mi · Nameless Lake 6 mi · Brazil Lake 6 mi · Arts L. 6 mi · Elizabeth Lake 6 mi · Augusta Lake 6 mi
See how Nairn L. 28 stacks up: best rainbow trout lakes in Ontario · 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. 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.