Len Lake Depth Map & Fishing Spots (ON)

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Lake depth chart

Len Lake, ON

Max 40 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 here are generated from real agency depth surveys; use the survey badge for the provider, dataset, datum and measured coverage. Never use for navigation. Always check local regulations.

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Recent catches at Len Lake

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 Len Lake on the board.

Fishing Len Lake: what the data says

11-acre lake in Sudbury District, Ontario. The lake tops out around 40 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 rest of this page walks each species through its year, using the map's own scoring.

On the chart, Len Lake draws 11 acres inside 0.6 miles of shoreline. Nearly circular (index 1.2), so the story is the bottom, not the bank. About 63% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. You'll find it in Sudbury District. The nearest mapped water is Pibroch Lake, 0 mi to the northwest.

Brook Trout fishing at Len Lake

In spring, brook trout run shallow here, mostly 2 to 15 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. Deep basin is the standout, a deep basin at roughly 28 ft, rated prime for summer brook trout. Time it for early morning and the evening. You won't need more than a small spoon fished deep or a trolled lake-clear wobbler + worm most summer days.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Shallow bay flat (5 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	Deep basin (28 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	open water	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Shoreline break (12 ft)	Small jigging spoon, Tungsten jig + plastic

Notable structure

Count 4 structure marks on this chart. The deepest, Deep basin, sits near 28 ft.

Deep basin: deep basin, around 28 ft
Shoreline break: drop-off, around 12 ft
Shallow bay flat: weed flat, around 5 ft
Back-bay flat: weed flat, around 1 ft

Len Lake 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 Len Lake specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Len Lake?

Len Lake is about 40 ft (12 m) deep at its deepest point. 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.

What fish are in Len Lake?

Anglers target brook trout on Len Lake.

Where is the best fishing spot on Len Lake?

Deep basin is the top-rated area: a deep basin in about 28 ft of water that rates prime for brook trout in summer. Open the map above to see every rated spot for each species and season.

When is the best time to fish Len Lake?

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 Len Lake?

Fishing on Len 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.

Nearby waters

Pibroch Lake 0 mi · Georgia Lake 1 mi · Charcoal Lake 2 mi · Marguerite Lake 2 mi · Marion L. 3 mi · Rushbrook Lake 3 mi · Solski L. 35 4 mi · Bluewater Lake 4 mi · S Lake 4 mi · Lower Shakwa Lake 6 mi · Franklin Lake 7 mi · Tomasina Lake 7 mi

See how Len Lake stacks up: best brook trout 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.