Grant Lake Depth Map & Fishing Spots (Nipissing District, ON)

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Lake depth chart

Grant Lake, ON

Max 113 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 on this water are approximations. Never use for navigation. Always check local regulations.

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Recent catches at Grant 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 Grant Lake on the board.

Fishing Grant Lake: what the data says

13-acre lake in Nipissing District, Ontario. The lake tops out around 113 ft. Contours on this water are modeled from its actual shoreline and max depth. Good for finding likely water, never for navigation. Here's the year, species by species, as the scoring engine sees it.

The outline encloses 13 acres, worked by 0.7 miles of shoreline. The basin is a simple one (shoreline index 1.3) — close to a bowl, so the structure on the chart matters more than the bank. Roughly 12% of the water is 15 ft or less as modeled, the band where the food chain lives. Nipissing District claims this one. Cache Lake sits 1 mi southwest — the closest neighbouring chart.

Brook Trout fishing at Grant Lake

Spring brook trout on Grant Lake hold shallow, usually 2 to 15 ft. They move out to 10 to 30 ft in summer and finish the year down in 3 to 20 ft. The feeding windows run early morning and the evening. The summer box starts with a small spoon fished deep or a trolled lake-clear wobbler + worm.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	open water	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	open water	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	open water	Small jigging spoon, Tungsten jig + plastic

Splake fishing at Grant Lake

When the water first warms, splake slide up into 5 to 25 ft. Summer is a 25 to 60 ft game here, winter a 10 to 45 ft one. Start at Break off the point. It's a drop-off holding about 51 ft of water and rates prime come summer. The feeding windows run early morning and the evening. Keep a trolled spoon at the thermocline or a white tube jig (deep) rigged through the warm months.

Season	Depth	Best window	Start at	Go-to baits
Spring	5 to 25 ft	dawn & dusk	Main-lake point (28 ft)	Small casting spoon (gold/orange), Inline spinner
Summer	25 to 60 ft	dawn & dusk	Break off the point (51 ft)	Trolled spoon at the thermocline, White tube jig (deep)
Fall	10 to 35 ft	dawn & dusk	Main-lake point (28 ft)	Casting spoon, Jerkbait
Winter	10 to 45 ft	dawn	Break off the point (51 ft)	Jigging spoon tipped with minnow head, Small white tube

Smallmouth Bass fishing at Grant Lake

Come spring, look for smallmouth bass tight to the bank in 3 to 12 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 20 to 45 ft. Start at Main-lake point. It's a point holding about 28 ft of water and rates prime come fall. Prime time lands in 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	open water	Ned rig, Tube jig
Summer	10 to 30 ft	dawn & dusk	Main-lake point (28 ft)	Drop shot (goby/minnow), Ned rig
Fall	8 to 25 ft	midday & dawn	Main-lake point (28 ft)	Jerkbait, Blade bait
Winter	20 to 45 ft	midday	Break off the point (51 ft)	Blade bait, Hair jig

Notable structure

Grant Lake carries 3 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 96 ft down.

Deep basin: deep basin, around 96 ft
Break off the point: drop-off, around 51 ft
Main-lake point: point, around 28 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Grant Lake?

Grant Lake is about 113 ft (34 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 Grant Lake?

Anglers target brook trout, splake, smallmouth bass on Grant Lake.

Where is the best fishing spot on Grant Lake?

Break off the point is the top-rated area: a drop-off in about 51 ft of water that rates prime for splake in summer. The interactive chart above rates every spot for each species and season.

When is the best time to fish Grant Lake?

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 Grant Lake?

Fishing on Grant 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

Cache Lake 1 mi · Canisbay Lake 2 mi · Head Lake 2 mi · Mew Lake 3 mi · Kenneth Lake 3 mi · Delano Lake 3 mi · Tanamakoon Lake 3 mi · Hilliard Lake 3 mi · Kathlyn Lake 3 mi · Sasajewun Lake 3 mi · Harness Lake 3 mi · Found Lake 4 mi

See how Grant Lake stacks up: best smallmouth bass lakes in Ontario · best brook trout lakes in Ontario · best splake lakes in Ontario

More water nearby: Nipissing District fishing maps (683 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.