North Boundary Lake Depth Map & Fishing Spots (ON)

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Lake depth chart

North Boundary Lake, ON

Max 32 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 North Boundary 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 North Boundary Lake on the board.

Fishing North Boundary Lake: what the data says

44-acre lake in Parry Sound District, Ontario. The lake tops out around 32 ft. This chart interpolates between a real shoreline and a known maximum depth. It will point you at likely water, but it is not a navigation product. The season-by-season read for each species follows, from the map's own numbers.

The drawn water covers 44 acres wrapped in 1.7 miles of bank. With a 1.9 development index there's bank structure worth casting at, in moderation. Roughly 59% of the water is 15 ft or less as modeled, the band where the food chain lives. The basin spans about 0.7 mi end to end and 0.2 mi across at its widest. It sits in Parry Sound District. Round Lake sits 1 mi northwest — the closest neighbouring chart.

Smallmouth Bass fishing at North Boundary Lake

Come spring, look for smallmouth bass tight to the bank in 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 10 to 32 ft. If you only fish one area, make it Main-lake point: a point around 8 ft that scores prime in fall. Best bite is early morning and the evening. A drop shot (goby/minnow) or a ned rig is the honest summer answer here.

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	10 to 30 ft	dawn & dusk	Break off the point (14 ft)	Drop shot (goby/minnow), Ned rig
Fall	8 to 25 ft	midday & dawn	Main-lake point (8 ft)	Jerkbait, Blade bait
Winter	10 to 32 ft	midday	Break off the point (14 ft)	Blade bait, Hair jig

Notable structure

6 pieces of structure are mapped here — Deep basin, around 27 ft, is the deepest of them.

Deep basin: deep basin, around 27 ft
Break off the point: drop-off, around 14 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

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

Check the official Ontario fishing regulations →

Common questions

How deep is North Boundary Lake?

North Boundary Lake is about 32 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 North Boundary Lake?

Anglers target smallmouth bass on North Boundary Lake.

Where is the best fishing spot on North Boundary Lake?

Main-lake point is the top-rated area: a point in about 8 ft of water that rates prime for smallmouth bass in fall. Open the map above to see every rated spot for each species and season.

When is the best time to fish North Boundary Lake?

For smallmouth bass, 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 North Boundary Lake?

Fishing on North Boundary 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

Round Lake 1 mi · Slush Lake 1 mi · Pickerel Lake 2 mi · Maeck Lake 3 mi · Lower Merrick Lake 4 mi · Spring Lake 4 mi · Tilles Lake 6 mi · Pine Lake 6 mi · Deer Lake 7 mi · Lake of Many Islands 7 mi · Mud Lake 8 mi · Rausch Lake 8 mi

See how North Boundary Lake stacks up: best smallmouth bass lakes in Ontario

More water nearby: Parry Sound District fishing maps (441 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.