Deep Lake Depth Map & Fishing Spots (Cochrane District, ON)

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Lake depth chart

Deep Lake, ON

Max 22 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 Deep 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 Deep Lake on the board.

Fishing Deep Lake: what the data says

7-acre lake in Cochrane District, Ontario. The lake tops out around 22 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 1973, a decades-old survey (an MNRF lake survey). Species by species, here's what the data says the year looks like.

Traced from the shoreline, Deep Lake runs 7 acres with 0.5 miles of edge. The basin is a simple one (shoreline index 1.4) — close to a bowl, so the structure on the chart matters more than the bank. You'll find it in Cochrane District. The nearest mapped water is Homestead Lake, 1 mi to the north.

Brook Trout fishing at Deep Lake

The spring pattern is a shallow one: brook trout in 2 to 15 ft. As the season builds they drop to 7 to 22 ft, wintering in 3 to 20 ft. Top water on the chart: Deep basin, a deep basin in the 6 ft range, prime in winter. Time it for early morning and the evening. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Main-lake point (1 ft)	Small inline spinner (gold), Tiny spoon
Summer	7 to 22 ft	dawn & dusk	Deep basin (6 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	Main-lake point (1 ft)	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Deep basin (6 ft)	Small jigging spoon, Tungsten jig + plastic

Notable structure

Count 4 structure marks on this chart. The deepest, Deep basin, sits near 6 ft.

Deep basin: deep basin, around 6 ft
Break off the point: drop-off, around 5 ft
Main-lake point: point, around 1 ft
Shallow bay flat: weed flat, around 1 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Deep Lake?

Deep Lake is about 22 ft (7 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1973, a decades-old survey (an MNRF lake survey).

What fish are in Deep Lake?

Anglers target brook trout on Deep Lake.

Where is the best fishing spot on Deep Lake?

Deep basin is the top-rated area: a deep basin in about 6 ft of water that rates prime for brook trout in winter. Every other rated spot, per species and season, is on the map above.

When is the best time to fish Deep 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 Deep Lake?

Fishing on Deep 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

Homestead Lake 1 mi · Legare Lake 1 mi · Vader's Lake 1 mi · Roundelay Lake 2 mi · Aquarius L. 2 mi · Reid Lake 2 mi · Pexton Lake 3 mi · Round Lake 3 mi · McCoshen Lake 3 mi · Slab Lake 3 mi · La Viollette Lake 3 mi · Deer Lake 3 mi

See how Deep Lake stacks up: best brook trout lakes in Ontario

More water nearby: Cochrane District fishing maps (673 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.