Thorne Lake Depth Map & Fishing Spots (ON)

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Lake depth chart

Thorne Lake, ON

Max 14 ft

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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

Fall shiner runActive window

Typical here: Sep 1 – Oct 31 · same push on the Ontario side — Simcoe's shiners migrate shallow as the water cools, and the predators ride with them

adultdaylight for the jig bite; after dark the shiners stack under dock lights with walleyes and pike mixed right in — follow the bait, not the spot — millions of shiners move together and the predators ride with them; silver profile and flash matter

Concentrates hard but travels — the school (and the walleyes under it) can be off a river mouth one week and miles upriver the next.

Jig-and-minnow is the event's signature — a frozen emerald shiner on a 1/4 oz jig drifted along the run; silver jerkbaits and trolled crankbaits take the roaming fish; blade baits under the schools.

The event happens over river mouths and the first miles upriver, warming shallow shorelines, and rocky points where the displaced bait stacks

Next on this water

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

June mayfly hatch (walleye lakes) · mayflyJun 1 – 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 Thorne 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 Thorne Lake on the board.

Fishing Thorne Lake: what the data says

32-acre lake in Muskoka District Municipality, Ontario. The lake tops out around 14 ft. The contours are modeled from the water's real shoreline and maximum depth. Treat them as a rough guide, and never use them for navigation. Species by species, here's what the data says the year looks like.

The outline encloses 32 acres, worked by 1.9 miles of shoreline. That shoreline is heavily fingered (development index 2.4) — bays, points and pockets everywhere, which multiplies the fishable edge. All of it is shallow-zone water — under ~15 ft across the entire basin, so the food chain has the run of the place. Tip to tip the water measures near 0.4 mi with a 0.3-mi widest point. It sits in Muskoka District Municipality. If the bite dies, Lake Muskoka is 1 mi to the northeast.

Yellow Perch fishing at Thorne Lake

The spring pattern is a shallow one: yellow perch in 3 to 12 ft. Midsummer fish sit out in 4 to 14 ft before dropping to 4 to 14 ft for winter. The spot to know is Deep basin, a deep basin in about 12 ft of water that rates prime for yellow perch in fall. Plan around early morning in the warm months. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	midday & dawn	open water	Small jig + curly tail, Perch-pattern micro crank
Summer	4 to 14 ft	dawn	Deep basin (12 ft)	Drop-shot micro plastics, Small spoon tipped with worm
Fall	4 to 14 ft	midday	Deep basin (12 ft)	Jigging spoon (small), Perch rig / spreader
Winter	4 to 14 ft	midday & dawn	Deep basin (12 ft)	Tungsten jig + spikes, Rattle spoon (small)

Northern Pike fishing at Thorne Lake

When the water first warms, northern pike slide up into 2 to 8 ft. Summer is a 4 to 14 ft game here, winter a 4 to 14 ft one. Start at Break off the point. It's a drop-off holding about 6 ft of water and rates prime come fall. The feeding windows run early morning and the evening. Keep a bucktail or a weedless spoon over cabbage rigged through the warm months.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 8 ft	midday & dawn	open water	#5 inline spinner, Spoon (red/white)
Summer	4 to 14 ft	dawn & dusk	Break off the point (6 ft)	Bucktail, Weedless spoon over cabbage
Fall	4 to 14 ft	midday & dawn	Break off the point (6 ft)	Big rubber (Bull Dawg style), Husky-style jerkbait
Winter	4 to 14 ft	midday	Main-lake point (8 ft)	Tip-ups, Large jigging spoon

Smallmouth Bass fishing at Thorne Lake

When the water first warms, smallmouth bass slide up into 3 to 12 ft. Summer is a 4 to 14 ft game here, winter a 4 to 14 ft one. Start at Main-lake point. It's a point holding about 8 ft of water and rates prime come fall. The feeding windows run early morning and the evening. Keep a drop shot (goby/minnow) or a ned rig rigged through the warm months.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	dawn & dusk	Main-lake point (8 ft)	Ned rig, Tube jig
Summer	4 to 14 ft	dawn & dusk	Break off the point (6 ft)	Drop shot (goby/minnow), Ned rig
Fall	4 to 14 ft	midday & dawn	Main-lake point (8 ft)	Jerkbait, Blade bait
Winter	4 to 14 ft	midday	Break off the point (6 ft)	Blade bait, Hair jig

Rock Bass fishing at Thorne Lake

Start shallow in spring: rock bass sit in 2 to 10 ft that time of year. Summer pushes them deeper, 4 to 14 ft, and winter fish settle into 4 to 14 ft. The spot to know is Main-lake point, a point in about 8 ft of water that rates prime for rock bass in summer. Warm-month bites cluster around the evening. Throw a ned rig (small) or a marabou jig until the fish tell you otherwise.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 10 ft	midday & dawn	Main-lake point (8 ft)	1/16 oz jig + grub, Small inline spinner
Summer	4 to 14 ft	dusk	Main-lake point (8 ft)	Ned rig (small), Marabou jig
Fall	4 to 14 ft	midday	Break off the point (6 ft)	Small tube jig, Inline spinner
Winter	4 to 14 ft	midday	Deep basin (12 ft)	Tungsten jig + plastic, Small spoon + spike

Brown Bullhead fishing at Thorne Lake

Come spring, look for brown bullhead tight to the bank in 2 to 8 ft. Expect a summer slide to 3 to 12 ft, then a winter hold in 4 to 14 ft. Start at Deep basin. It's a deep basin holding about 12 ft of water and rates prime come winter. Prime time lands in after dark and the evening.

Season	Depth	Best window	Start at
Spring	2 to 8 ft	dusk & night	open water
Summer	3 to 12 ft	night & dusk	Deep basin (12 ft)
Fall	4 to 14 ft	dusk	Deep basin (12 ft)
Winter	4 to 14 ft	midday	Deep basin (12 ft)

Notable structure

4 pieces of structure are mapped here — Deep basin, around 12 ft, is the deepest of them.

Deep basin: deep basin, around 12 ft
Main-lake point: point, around 8 ft
Secondary point: point, around 8 ft
Break off the point: drop-off, around 6 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Thorne Lake?

Thorne Lake 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.

What fish are in Thorne Lake?

Anglers target yellow perch, northern pike, smallmouth bass, rock bass, brown bullhead on Thorne Lake.

Where is the best fishing spot on Thorne Lake?

Deep basin is the top-rated area: a deep basin in about 12 ft of water that rates prime for yellow perch in fall. The map above holds the full rated-spot list for every species and season.

When is the best time to fish Thorne Lake?

For yellow perch, the summer bite is best in early morning. 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 Thorne Lake?

Fishing on Thorne 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

Lake Muskoka 1 mi · Hardy Lake 1 mi · Gullwing Lake 2 mi · Black Lake 2 mi · Pigeon Lake 3 mi · Clear Lake 3 mi · Echo Lake 3 mi · Deer Lake 4 mi · Bastedo Lake 4 mi · Long Lake 5 mi · Nine Mile Lake 5 mi · Bearpaw Lake 5 mi

See how Thorne Lake stacks up: best smallmouth bass lakes in Ontario · best northern pike lakes in Ontario · best yellow perch lakes in Ontario · best rock bass lakes in Ontario

More water nearby: Muskoka District Municipality fishing maps (276 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.