Lehmann Lake Depth Map & Fishing Spots (ON)

Skip to interactive depth chart

Lake depth chart

Lehmann Lake, ON

Max 33 ft

Today's read

Where to start

Fall shiner run window is on — see the hatch outlook

Hatch outlook

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

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.

Loading depth chart…

Recent catches at Lehmann 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 Lehmann Lake on the board.

Fishing Lehmann Lake: what the data says

695-acre lake in Timiskaming District, Ontario. The lake tops out around 33 ft. What you see is a modeled chart: the shoreline is real, the max depth is published, and the contours between are estimated. Plan with it; don't navigate by it. Here's the year, species by species, as the scoring engine sees it.

On the chart, Lehmann Lake draws 705 acres inside 8.9 miles of shoreline, broken up by 2 islands. The 2.4 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. The shallow band under 15 ft claims about 48% of the surface on the model — that's where the groceries are. Figure 1.6 mi of water from one end to the other, 1.5 mi at the beam. The water lies in Timiskaming District. For a second option, Otto Lake lies 2 mi north.

Northern Pike fishing at Lehmann Lake

Spring puts northern pike in skinny water — 2 to 8 ft is the zone. As the season builds they drop to 8 to 20 ft, wintering in 5 to 15 ft. Spring northern pike concentrate at Shallow bay flat, a prime-rated weed flat around 4 ft. Warm-month bites cluster around early morning and the evening. A bucktail or a weedless spoon over cabbage covers the summer program.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 8 ft	midday & dawn	Shallow bay flat (4 ft)	#5 inline spinner, Spoon (red/white)
Summer	8 to 20 ft	dawn & dusk	Break off the point (15 ft)	Bucktail, Weedless spoon over cabbage
Fall	6 to 18 ft	midday & dawn	Break off the point (15 ft)	Big rubber (Bull Dawg style), Husky-style jerkbait
Winter	5 to 15 ft	midday	Shallow bay flat (4 ft)	Tip-ups, Large jigging spoon

Notable structure

The chart marks 6 structure features on Lehmann Lake; the deepest is Deep basin at about 28 ft.

Deep basin: deep basin, around 28 ft
Break off the point: drop-off, around 15 ft
Main-lake point: point, around 8 ft
Secondary point: point, around 8 ft
Shallow bay flat: weed flat, around 4 ft
Back-bay flat: weed flat, around 4 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Lehmann Lake?

Lehmann Lake is about 33 ft (10 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 Lehmann Lake?

Anglers target northern pike on Lehmann Lake.

Where is the best fishing spot on Lehmann Lake?

Shallow bay flat is the top-rated area: a weed flat in about 4 ft of water that rates prime for northern pike in spring. Every other rated spot, per species and season, is on the map above.

When is the best time to fish Lehmann Lake?

For northern pike, 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 Lehmann Lake?

Fishing on Lehmann 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

Otto Lake 2 mi · Banner Lake 2 mi · Duncan Lake 3 mi · Raymond L. 32 4 mi · Raymond L. 30 4 mi · Penassi L. 5 mi · Metikemedo L. 6 mi · Ferris Lake 6 mi · Moon Lake 7 mi · Milly L. 7 mi · Tiger Lake 7 mi · Lloyd Lake 7 mi

See how Lehmann Lake stacks up: best northern pike lakes in Ontario

More water nearby: Timiskaming District fishing maps (515 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.