Gravel Pit L. Depth Map & Fishing Spots (ON)

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Lake depth chart

Gravel Pit L., ON

Max 40 ft

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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 Gravel Pit L.

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Fishing Gravel Pit L.: what the data says

18-acre lake in Cochrane District, Ontario. The lake tops out around 40 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 1972, a decades-old survey (a transect sounding survey). Here's the year, species by species, as the scoring engine sees it.

Gravel Pit L. maps at 18 acres behind 0.8 miles of shoreline. Nearly circular (index 1.3), so the story is the bottom, not the bank. Littoral water — the productive band under ~15 ft — makes up 26% of this chart. Figure 0.3 mi of water from one end to the other, 0.2 mi at the beam. Cochrane District claims this one. Mowbray Lake sits 4 mi southwest — the closest neighbouring chart.

Brook Trout fishing at Gravel Pit L.

Early season brook trout use the shallows, holding in 2 to 15 ft. Summer is a 10 to 30 ft game here, winter a 3 to 20 ft one. The chart's best answer is Break off the point — drop-off, 30 ft, prime for summer. Best bite is early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Main-lake point (12 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	Break off the point (30 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	Main-lake point (12 ft)	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	open water	Small jigging spoon, Tungsten jig + plastic

Walleye fishing at Gravel Pit L.

In spring, walleye run shallow here, mostly 4 to 15 ft. Summer pushes them deeper, 15 to 35 ft, and winter fish settle into 20 to 40 ft. Break off the point is the standout, a drop-off at roughly 30 ft, rated prime for fall walleye. Time it for the evening and early morning. You won't need more than a crawler harness on bottom bouncer or a deep crankbait (trolled) most summer days.

Season	Depth	Best window	Start at	Go-to baits
Spring	4 to 15 ft	dusk & dawn	Main-lake point (12 ft)	1/8 oz jig + minnow, Hair jig
Summer	15 to 35 ft	dusk & dawn	Break off the point (30 ft)	Crawler harness on bottom bouncer, Deep crankbait (trolled)
Fall	12 to 40 ft	dusk & night	Break off the point (30 ft)	Jigging rap, Jig + big minnow
Winter	20 to 40 ft	dusk & dawn	Deep basin (40 ft)	Jigging spoon + minnow head, Rattle bait

Lake Sturgeon fishing at Gravel Pit L.

Spring puts lake sturgeon in skinny water — 3 to 15 ft is the zone. As the season builds they drop to 15 to 40 ft, wintering in 12 to 40 ft. Fall lake sturgeon concentrate at Deep basin, a prime-rated deep basin around 40 ft. Warm-month bites cluster around after dark and the evening.

Season	Depth	Best window	Start at
Spring	3 to 15 ft	dusk & night	open water
Summer	15 to 40 ft	night & dusk	Deep basin (40 ft)
Fall	12 to 40 ft	dusk	Deep basin (40 ft)
Winter	12 to 40 ft	midday	Deep basin (40 ft)

Notable structure

The chart marks 3 structure features on Gravel Pit L.; the deepest is Deep basin at about 40 ft.

Deep basin: deep basin, around 40 ft
Break off the point: drop-off, around 30 ft
Main-lake point: point, around 12 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Gravel Pit L.?

Gravel Pit L. is about 40 ft (12 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1972, a decades-old survey (a transect sounding survey).

What fish are in Gravel Pit L.?

Anglers target brook trout, walleye, lake sturgeon on Gravel Pit L..

Where is the best fishing spot on Gravel Pit L.?

Break off the point is the top-rated area: a drop-off in about 30 ft of water that rates prime for walleye in fall. Every other rated spot, per species and season, is on the map above.

When is the best time to fish Gravel Pit 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 Gravel Pit L.?

Fishing on Gravel Pit 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

Mowbray Lake 4 mi · Howells L. 6 7 mi · Overhill L. 7 mi · Howells Lake 7 mi · Smith Lake 8 mi · Boyle Lake 8 mi · Boyle Lake 36 9 mi · Howells No. 19 9 mi · Fraserdale Lake 2 10 mi · Boyle 10 L. 11 mi · Boyle 11 L. 11 mi · Boyle 12 L. 12 mi

See how Gravel Pit L. stacks up: best walleye lakes in Ontario · best brook trout lakes in Ontario · best lake sturgeon 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.