Seventeen Mile Lake Depth Map & Fishing Spots (ON)

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Lake depth chart

Seventeen Mile Lake, ON

Max 45 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

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 Seventeen Mile 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 Seventeen Mile Lake on the board.

Fishing Seventeen Mile Lake: what the data says

45-acre lake in Muskoka District Municipality, Ontario. The lake tops out around 45 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. Species by species, here's what the data says the year looks like.

Drawn out, this is 44 acres of water rimmed by 1.4 miles of bank. The shoreline is moderately structured (index 1.6) — enough points and pockets to pattern. About 59% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. The basin spans about 0.5 mi end to end and 0.3 mi across at its widest. The water lies in Muskoka District Municipality. The nearest mapped water is Eighteen Mile Lake, 1 mi to the northeast.

Yellow Perch fishing at Seventeen Mile Lake

Come spring, look for yellow perch tight to the bank in 3 to 12 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 15 to 35 ft. Start at Shallow bay flat. It's a weed flat holding about 5 ft of water and rates prime come spring. Prime time lands in early morning. A drop-shot micro plastics or a small spoon tipped with worm is the honest summer answer here.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	midday & dawn	Shallow bay flat (5 ft)	Small jig + curly tail, Perch-pattern micro crank
Summer	10 to 30 ft	dawn	Break off the point (20 ft)	Drop-shot micro plastics, Small spoon tipped with worm
Fall	12 to 35 ft	midday	Break off the point (20 ft)	Jigging spoon (small), Perch rig / spreader
Winter	15 to 35 ft	midday & dawn	Deep basin (38 ft)	Tungsten jig + spikes, Rattle spoon (small)

Smallmouth Bass fishing at Seventeen Mile Lake

Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 20 to 45 ft. The spot to know is Main-lake point, a point in about 11 ft of water that rates prime for smallmouth bass in fall. Warm-month bites cluster around early morning and the evening. Throw a drop shot (goby/minnow) or a ned rig until the fish tell you otherwise.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	dawn & dusk	Main-lake point (11 ft)	Ned rig, Tube jig
Summer	10 to 30 ft	dawn & dusk	Break off the point (20 ft)	Drop shot (goby/minnow), Ned rig
Fall	8 to 25 ft	midday & dawn	Main-lake point (11 ft)	Jerkbait, Blade bait
Winter	20 to 45 ft	midday	Break off the point (20 ft)	Blade bait, Hair jig

Notable structure

The chart marks 5 structure features on Seventeen Mile Lake; the deepest is Deep basin at about 38 ft.

Deep basin: deep basin, around 38 ft
Break off the point: drop-off, around 20 ft
Main-lake point: point, around 11 ft
Secondary point: point, around 11 ft
Shallow bay flat: weed flat, around 5 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Seventeen Mile Lake?

Seventeen Mile Lake is about 45 ft (14 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 Seventeen Mile Lake?

Anglers target yellow perch, smallmouth bass on Seventeen Mile Lake.

Where is the best fishing spot on Seventeen Mile Lake?

Shallow bay flat is the top-rated area: a weed flat in about 5 ft of water that rates prime for yellow perch in spring. Open the map above to see every rated spot for each species and season.

When is the best time to fish Seventeen Mile 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 Seventeen Mile Lake?

Fishing on Seventeen Mile 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

Eighteen Mile Lake 1 mi · Sixteen Mile Lake 1 mi · Burns Lake 1 mi · Crotch Lake 1 mi · Hardup Lake 1 mi · Eiler Lake 1 mi · Buck Lake 2 mi · Fifteen Mile Lake 2 mi · Solitaire Lake 2 mi · Upper Oxbow Lake 2 mi · Little Clear L. 3 mi · Oxtongue Lake 3 mi

See how Seventeen Mile Lake stacks up: best smallmouth bass lakes in Ontario · best yellow perch 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.