Jeff Lake Depth Map & Fishing Spots (ON)

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Lake depth chart

Jeff Lake, ON

Max 7 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.

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Recent catches at Jeff 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 Jeff Lake on the board.

Fishing Jeff Lake: what the data says

127-acre lake in Sudbury District, Ontario. The lake tops out around 7 ft. The depth picture is modeled, anchored to the true shoreline and the water's published max depth — a scouting aid, never a chart to run a boat by. Every species below gets its seasonal read from the same numbers driving the chart.

Drawn out, this is 128 acres of water rimmed by 2.2 miles of bank. Its 1.4 shoreline index means few bank features; the contours below do the pattern work. Nothing on this chart breaks 15 ft, which makes the whole surface littoral: weeds, bait and ambush cover everywhere. Tip to tip the water measures near 0.8 mi with a 0.4-mi widest point. The water lies in Sudbury District. The nearest mapped water is Hutt L., 1 mi to the southeast.

Northern Pike fishing at Jeff Lake

Start shallow in spring: northern pike sit in 2 to 7 ft that time of year. They don't go far with the seasons — 2 to 7 ft covers summer, 2 to 7 ft covers winter. The spot to know is Shallow bay flat, a weed flat in about 3 ft of water that rates prime for northern pike in spring. Warm-month bites cluster around early morning and the evening. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 7 ft	midday & dawn	Shallow bay flat (3 ft)	#5 inline spinner, Spoon (red/white)
Summer	2 to 7 ft	dawn & dusk	Shallow bay flat (3 ft)	Bucktail, Weedless spoon over cabbage
Fall	2 to 7 ft	midday & dawn	Shallow bay flat (3 ft)	Big rubber (Bull Dawg style), Husky-style jerkbait
Winter	2 to 7 ft	midday	Shallow bay flat (3 ft)	Tip-ups, Large jigging spoon

Notable structure

Jeff Lake carries 6 mapped structure features, topping out (or rather bottoming out) at Main-lake point, about 7 ft down.

Main-lake point: point, around 7 ft
Secondary point: point, around 7 ft
Deep basin: deep basin, around 6 ft
Shallow bay flat: weed flat, around 3 ft
Back-bay flat: weed flat, around 3 ft
Break off the point: drop-off, around 3 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Jeff Lake?

Jeff Lake is about 7 ft (2 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 Jeff Lake?

Anglers target northern pike on Jeff Lake.

Where is the best fishing spot on Jeff Lake?

Shallow bay flat is the top-rated area: a weed flat in about 3 ft of water that rates prime for northern pike in spring. The interactive chart above rates every spot for each species and season.

When is the best time to fish Jeff 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 Jeff Lake?

Fishing on Jeff 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

Hutt L. 1 mi · Wellington Lake 2 mi · Melick Lake 2 mi · Redwing Lake 3 mi · Ward Lake 3 mi · Hutt L. 16 3 mi · Tory Lake 4 mi · Holbrooke Lake 4 mi · Seveninch Lake 4 mi · Wood Lake 4 mi · Canoeshed Lake 4 mi · Sirola Lake 4 mi

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

More water nearby: Sudbury District fishing maps (868 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.