Island L. Depth Map (York Regional Municipality, ON)

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Lake depth chart

Island L., ON

Max 21 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 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.

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Recent catches at Island L.

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 Island L. on the board.

Fishing Island L.: what the data says

17-acre lake in York Regional Municipality, Ontario. The lake tops out around 21 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 a transect sounding survey by the Ontario MNRF. What the data behind the map says about each species, season by season:

Island L. maps at 19 acres behind 0.7 miles of shoreline. At index 1.2 the outline is almost a bowl — read the depth changes, not the shoreline. The shallow band under 15 ft claims about 91% of the surface — that's where the groceries are. It sits in York Regional Municipality. If the bite dies, Lazy Lake is 0 mi to the east.

Smallmouth Bass fishing at Island L.

Early season smallmouth bass use the shallows, holding in 3 to 12 ft. Summer is a 6 to 21 ft game here, winter a 6 to 21 ft one. The chart's best answer is Shoreline break — drop-off, 4 ft, prime for winter. Best bite is early morning and the evening. Tie on a drop shot (goby/minnow) or a ned rig and you're in the game.

Season	Depth	Best window	Start at	Go-to baits
Spring	3 to 12 ft	dawn & dusk	open water	Ned rig, Tube jig
Summer	6 to 21 ft	dawn & dusk	Shoreline break (4 ft)	Drop shot (goby/minnow), Ned rig
Fall	6 to 21 ft	midday & dawn	Shoreline break (4 ft)	Jerkbait, Blade bait
Winter	6 to 21 ft	midday	Shoreline break (4 ft)	Blade bait, Hair jig

Pumpkinseed fishing at Island L.

In spring, pumpkinseed run shallow here, mostly 1 to 8 ft. Summer pushes them deeper, 2 to 10 ft, and winter fish settle into 6 to 18 ft. Shallow bay flat is the standout, a weed flat at roughly 2 ft, rated prime for spring pumpkinseed. Time it for the evening and early morning. You won't need more than a micro tube or a sponge spider (fly) most summer days.

Season	Depth	Best window	Start at	Go-to baits
Spring	1 to 8 ft	midday & dusk	Shallow bay flat (2 ft)	Micro jig under a float, Tiny beetle-spin
Summer	2 to 10 ft	dusk & dawn	Shallow bay flat (2 ft)	Micro tube, Sponge spider (fly)
Fall	4 to 14 ft	dusk & dawn	Back-bay flat (3 ft)	Micro jig + waxworm, Small spoon tipped
Winter	6 to 18 ft	dawn	Deep basin (19 ft)	Tungsten ice jig + plastic, Tiny spoon

Brown Bullhead fishing at Island L.

Early season brown bullhead use the shallows, holding in 2 to 8 ft. Expect a summer slide to 3 to 12 ft, then a winter hold in 6 to 21 ft. Put Deep basin first on the milk run — a deep basin near 19 ft that grades prime for winter. In summer the feeding windows fall in after dark and the evening.

Season	Depth	Best window	Start at
Spring	2 to 8 ft	dusk & night	Shallow bay flat (2 ft)
Summer	3 to 12 ft	night & dusk	Back-bay flat (3 ft)
Fall	5 to 15 ft	dusk	Back-bay flat (3 ft)
Winter	6 to 21 ft	midday	Deep basin (19 ft)

Notable structure

Structure-wise the chart holds 4 features, led in depth by Deep basin at roughly 19 ft.

Deep basin: deep basin, around 19 ft
Shoreline break: drop-off, around 4 ft
Back-bay flat: weed flat, around 3 ft
Shallow bay flat: weed flat, around 2 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Island L.?

Island L. is about 21 ft (6 m) deep at its deepest point. The depth data here comes from a transect sounding survey by the Ontario MNRF.

What fish are in Island L.?

Anglers target smallmouth bass, pumpkinseed, brown bullhead on Island L..

Where is the best fishing spot on Island L.?

Shallow bay flat is the top-rated area: a weed flat in about 2 ft of water that rates prime for pumpkinseed in spring. The map above holds the full rated-spot list for every species and season.

When is the best time to fish Island L.?

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 Island L.?

Fishing on Island 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

Lazy Lake 0 mi · Staley Lake 0 mi · Shadow Lake 1 mi · Musselman Lake 1 mi · Preston Lake 7 mi · Simeon Lake 9 mi · Haynes Lake 10 mi · St. George Lake 11 mi · Mud Lake 11 mi · Wilcox Lake 11 mi · Wagner Lake 12 mi · Bond Lake 12 mi

See how Island L. stacks up: best smallmouth bass lakes in Ontario · best pumpkinseed lakes in Ontario · best brown bullhead lakes in Ontario

More water nearby: York Regional Municipality fishing maps (16 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.