Pat Lake Depth Map & Fishing Spots (Sudbury District, ON)

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Lake depth chart

Pat Lake, ON

Max 90 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

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 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 Pat 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 Pat Lake on the board.

Fishing Pat Lake: what the data says

40-acre lake in Sudbury District, Ontario. The lake tops out around 90 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. What the data behind the map says about each species, season by season:

Traced from the shoreline, Pat Lake runs 40 acres with 1.3 miles of edge. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. About 39% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 0.4 mi long by 0.3 mi wide at the broadest reach. The water lies in Sudbury District. Closest neighbour on DepthScout: Gay Lake, 0 mi east of here.

Brook Trout fishing at Pat Lake

Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Warm water sends them out to 10 to 30 ft; cold water stacks them in 3 to 20 ft. Top water on the chart: Main-lake point, a point in the 5 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a small spoon fished deep or a trolled lake-clear wobbler + worm until the fish tell you otherwise.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Main-lake point (5 ft)	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	Main-lake point (5 ft)	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Back-bay flat (11 ft)	Small jigging spoon, Tungsten jig + plastic

Notable structure

Count 5 structure marks on this chart. The deepest, Deep basin, sits near 89 ft.

Deep basin: deep basin, around 89 ft
Break off the point: drop-off, around 54 ft
Back-bay flat: weed flat, around 11 ft
Main-lake point: point, around 5 ft
Shallow bay flat: weed flat, around 1 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Pat Lake?

Pat Lake is about 90 ft (27 m) deep at its deepest point. 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.

What fish are in Pat Lake?

Anglers target brook trout on Pat Lake.

Where is the best fishing spot on Pat Lake?

Main-lake point is the top-rated area: a point in about 5 ft of water that rates prime for brook trout in spring. Open the map above to see every rated spot for each species and season.

When is the best time to fish Pat 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 Pat Lake?

Fishing on Pat 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

Gay Lake 0 mi · Bob Lake 0 mi · Hook Lake 0 mi · Wasapika Lake 1 mi · Cryderman Lake 4 mi · Stewart Lake 4 mi · Chlorus Lake 4 mi · Houston Lake 4 mi · Michiwakenda Lake 4 mi · Eplett Lake 5 mi · Bigfour Lake 5 mi · Bobtail Lake 5 mi

See how Pat Lake stacks up: best brook trout lakes in Ontario

More water nearby: Sudbury District fishing maps (868 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.