Greins P. Depth Map & Fishing Spots (ON)

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Lake depth chart

Greins P., ON

Max 7 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

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

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 Greins P.

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 Greins P. on the board.

Fishing Greins P.: what the data says

8-acre lake in Grey County, Ontario. The lake tops out around 7 ft. What you see is a modeled chart: the shoreline is real, the max depth is published, and the contours between are estimated. Plan with it; don't navigate by it. Here is how the season plays out for each species, straight from the data behind the map.

Traced from the shoreline, Greins P. runs 8 acres with 0.8 miles of edge. The shoreline is moderately structured (index 2.1) — enough points and pockets to pattern. The whole water is littoral — nothing here runs deeper than ~15 ft, so it's all weed-and-bait territory. You'll find it in Grey County. Closest neighbour on DepthScout: Holstein Dam, 2 mi east of here.

Brook Trout fishing at Greins P.

In spring, brook trout run shallow here, mostly 1 to 7 ft. Summer keeps them at 2 to 7 ft, and they winter in 1 to 7 ft. Deep basin is the standout, a deep basin at roughly 6 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	1 to 7 ft	dawn & dusk	Main-lake point (7 ft)	Small inline spinner (gold), Tiny spoon
Summer	2 to 7 ft	dawn & dusk	Deep basin (6 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	1 to 7 ft	midday & dawn	Main-lake point (7 ft)	Small spoon (orange), Spinner
Winter	1 to 7 ft	dawn	Deep basin (6 ft)	Small jigging spoon, Tungsten jig + plastic

Notable structure

Structure-wise the chart holds 3 features, led in depth by Main-lake point at roughly 7 ft.

Main-lake point: point, around 7 ft
Deep basin: deep basin, around 6 ft
Break off the point: drop-off, around 3 ft

Greins P. 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 Greins P. specifically, so confirm the current rules before you fish.

Check the official Ontario fishing regulations →

Common questions

How deep is Greins P.?

Greins P. is about 7 ft (2 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 Greins P.?

Anglers target brook trout on Greins P..

Where is the best fishing spot on Greins P.?

Deep basin is the top-rated area: a deep basin in about 6 ft of water that rates prime for brook trout in summer. The map above holds the full rated-spot list for every species and season.

When is the best time to fish Greins P.?

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 Greins P.?

Fishing on Greins P. 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

Holstein Dam 2 mi · Matthews Lake 5 mi · Wilder Lake 6 mi · Durham Town P. 8 mi · Bentinck L. E1 13 mi · Westfall's Lake 13 mi · Tobermory Lake 13 mi · Turner Lake 15 mi · Marl Lake 15 mi · Lake Rosalind 15 mi · Welbeck Mill Pond 15 mi · Ruhl Lake 16 mi

See how Greins P. stacks up: best brook trout lakes in Ontario

More water nearby: Grey County fishing maps (47 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.