McIlveen L. 20 Depth Map & Fishing Spots (ON)

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Lake depth chart

McIlveen L. 20, ON

Max 66 ft

Today's read

Where to start

Hopper & ant season (windward banks) window is on — see the hatch outlook

Hatch outlook

Hopper & ant season (windward banks)Active window

Typical here: Jul 1 – Sep 15 · hoppers peak July–August; winged-ant falls show up on warm humid afternoons — a wind event, not a hatch

adultwarm, breezy afternoons, roughly 1–5pm — slap the imitation down hard — the splat is the trigger — then wait; count to three after the rise before setting

Work the windward bank on breezy summer afternoons — that's where the food is. Casting-bubble-and-hopper is the direct translation; otherwise run small topwaters and inline spinners tight along the grass edges and blowdown banks in the afternoon warmth.

The event happens over windward grassy banks, overhanging brush and blowdowns — wherever the breeze dumps the bugs

Next on this water

Spring bug season (brook trout lakes) · forageApr 25 – Jun 30 · in ~8 months

Hex (giant mayfly) · mayflyMay 25 – Aug 10 · in ~9 months

Recommendations come from depth structure and seasonal species behavior. Treat them as a starting point, not a guarantee. Contours on this water are approximations. Never use for navigation. Always check local regulations.

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Recent catches at McIlveen L. 20

Shared by DepthScout anglers. Exact spots stay private, always.

No shared catches here yet — be the first.Log a catch from the map above and share it to put McIlveen L. 20 on the board.

Fishing McIlveen L. 20: what the data says

41-acre lake in Algoma District, Ontario. The lake tops out around 66 ft. The chart is a model: real shoreline, published maximum depth, interpolated in between. A planning tool, never a navigation product. Every species below gets its seasonal read from the same numbers driving the chart.

Drawn out, this is 41 acres of water rimmed by 1.3 miles of bank. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. 41% of the surface is littoral (under ~15 ft), per the model — cover, weeds and forage water. Figure 0.6 mi of water from one end to the other, 0.2 mi at the beam. You'll find it in Algoma District. Closest neighbour on DepthScout: McIlveen L. 19, 1 mi northeast of here.

Brook Trout fishing at McIlveen L. 20

Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. The spot to know is Break off the point, a drop-off in about 30 ft of water that rates prime for brook trout in summer. Warm-month bites cluster around early morning and the evening. Throw a small spoon fished deep or a trolled lake-clear wobbler + worm until the fish tell you otherwise.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Shallow bay flat (6 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	Break off the point (30 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	Main-lake point (17 ft)	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Shallow bay flat (6 ft)	Small jigging spoon, Tungsten jig + plastic

Notable structure

Count 5 structure marks on this chart. The deepest, Deep basin, sits near 56 ft.

Deep basin: deep basin, around 56 ft
Break off the point: drop-off, around 30 ft
Main-lake point: point, around 17 ft
Shallow bay flat: weed flat, around 6 ft
Back-bay flat: weed flat, around 6 ft

Public access & boat ramps

Lake 20 — ramp

Access data: Geospatial Ontario - Fishing Access Points. Confirm conditions and fees locally before you launch.

McIlveen L. 20 fishing regulations

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 McIlveen L. 20 specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is McIlveen L. 20?

McIlveen L. 20 is about 66 ft (20 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.

What fish are in McIlveen L. 20?

Anglers target brook trout on McIlveen L. 20.

Where is the best fishing spot on McIlveen L. 20?

Break off the point is the top-rated area: a drop-off in about 30 ft of water that rates prime for brook trout in summer. The map above holds the full rated-spot list for every species and season.

When is the best time to fish McIlveen L. 20?

For brook 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.

What are the fishing regulations for McIlveen L. 20?

Fishing on McIlveen L. 20 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.

Nearby waters

McIlveen L. 19 1 mi · Amy Lake 1 mi · Trapper Lake 3 mi · Saymo Lake 3 mi · Friendly Lake 3 mi · Gravel Lake 4 mi · Little Loon Lake 4 mi · Island Lake 4 mi · Upper Laughing Lake 5 mi · Upper Twin L. 5 mi · Ranger Lake 5 mi · Mystery Lake 5 mi

See how McIlveen L. 20 stacks up: best brook trout lakes in Ontario

More water nearby: Algoma District fishing maps (1026 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.