Boyle 11 L. Depth Map & Fishing Spots (ON)

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Lake depth chart

Boyle 11 L., ON

Max 59 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

Spring bug season (brook trout lakes) · forageApr 25 – Jun 30 · in ~8 months

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 here are generated from real agency depth surveys; use the survey badge for the provider, dataset, datum and measured coverage. Never use for navigation. Always check local regulations.

Depth · ft

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Recent catches at Boyle 11 L.

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Fishing Boyle 11 L.: what the data says

9-acre lake in Cochrane District, Ontario. The lake tops out around 59 ft. The depth chart comes from Ontario Ministry of Natural Resources and Forestry bathymetric survey data, so the contours are survey-derived rather than computer-modeled. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey). What the data behind the map says about each species, season by season:

On the chart, Boyle 11 L. draws 9 acres inside 0.7 miles of shoreline. The shoreline is moderately structured (index 1.6) — enough points and pockets to pattern. 27% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Figure 0.3 mi of water from one end to the other. You'll find it in Cochrane District. Closest neighbour on DepthScout: Boyle 12 L., 0 mi southwest of here.

Brook Trout fishing at Boyle 11 L.

In spring, brook trout run shallow here, mostly 2 to 15 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. Shoreline break is the standout, a drop-off at roughly 14 ft, rated prime for summer brook trout. Time it for early morning and the evening. You won't need more than a small spoon fished deep or a trolled lake-clear wobbler + worm most summer days.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Shallow bay flat (10 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	Shoreline break (14 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	open water	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Shoreline break (14 ft)	Small jigging spoon, Tungsten jig + plastic

Northern Pike fishing at Boyle 11 L.

Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Back-bay flat, a weed flat in the 8 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. 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 8 ft	midday & dawn	Back-bay flat (8 ft)	#5 inline spinner, Spoon (red/white)
Summer	8 to 20 ft	dawn & dusk	Shallow bay flat (10 ft)	Bucktail, Weedless spoon over cabbage
Fall	6 to 18 ft	midday & dawn	Shallow bay flat (10 ft)	Big rubber (Bull Dawg style), Husky-style jerkbait
Winter	5 to 15 ft	midday	Shallow bay flat (10 ft)	Tip-ups, Large jigging spoon

Notable structure

Boyle 11 L. carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 53 ft down.

Deep basin: deep basin, around 53 ft
Shoreline break: drop-off, around 14 ft
Shallow bay flat: weed flat, around 10 ft
Back-bay flat: weed flat, around 8 ft

Boyle 11 L. 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 Boyle 11 L. specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Boyle 11 L.?

Boyle 11 L. is about 59 ft (18 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey).

What fish are in Boyle 11 L.?

Anglers target brook trout, northern pike on Boyle 11 L..

Where is the best fishing spot on Boyle 11 L.?

Back-bay flat is the top-rated area: a weed flat in about 8 ft of water that rates prime for northern pike in spring. Open the map above to see every rated spot for each species and season.

When is the best time to fish Boyle 11 L.?

For brook trout, 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 Boyle 11 L.?

Fishing on Boyle 11 L. 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

Boyle 12 L. 0 mi · Boyle 10 L. 0 mi · Boyle 8 Lake 1 mi · Guilfoyle No. 69 2 mi · Guilfoyle Lake 64 3 mi · Guilfoyle No. 87 4 mi · Boyle Lake 36 4 mi · Bennet Lake 4 mi · Guilfoyle L. 50 4 mi · Guilfoyle Lake 44 4 mi · Guilfoyle L. 49 4 mi · Boyle Lake 5 mi

See how Boyle 11 L. stacks up: best northern pike lakes in Ontario · best brook trout lakes in Ontario

More water nearby: Cochrane District fishing maps (673 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry: published agency survey data. 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.