Bolgers Lake Depth Map & Fishing Spots (ON)

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 interpolated from real agency depth surveys (state DNR / USACE). Never use for navigation. Always check local regulations.

Loading depth chart…

Recent catches at Bolgers 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 Bolgers Lake on the board.

Fishing Bolgers Lake: what the data says

25-acre lake in Algoma District, Ontario. The lake tops out around 72 ft. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey). What the data behind the map says about each species, season by season:

The drawn water covers 25 acres wrapped in 0.8 miles of bank. At index 1.1 the outline is almost a bowl — read the depth changes, not the shoreline. About 8% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Tip to tip the water measures near 0.3 mi with a 0.2-mi widest point. It sits in Algoma District. Its nearest charted neighbour, Lucas L., is 1 mi to the southwest.

Brook Trout fishing at Bolgers Lake

When the water first warms, brook trout slide up into 2 to 15 ft. By summer they slide out to 10 to 30 ft, and by winter most fish are in 3 to 20 ft. If you only fish one area, make it Shallow bay flat: a feeding flat around 10 ft that scores good in spring. In summer the feeding windows fall in early morning and the evening. Keep a small spoon fished deep or a trolled lake-clear wobbler + worm rigged through the warm months.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Shallow bay flat (10 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	open water	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Shallow bay flat (10 ft)	Small jigging spoon, Tungsten jig + plastic

Brown Bullhead fishing at Bolgers Lake

Spring brown bullhead on Bolgers Lake hold shallow, usually 2 to 8 ft. By summer they slide out to 3 to 12 ft, and by winter most fish are in 10 to 25 ft. The chart's best answer is Shallow bay flat — feeding flat, 10 ft, prime for summer. Prime time lands in after dark and the evening.

Season	Depth	Best window	Start at
Spring	2 to 8 ft	dusk & night	Shallow bay flat (10 ft)
Summer	3 to 12 ft	night & dusk	Shallow bay flat (10 ft)
Fall	5 to 15 ft	dusk	Shallow bay flat (10 ft)
Winter	10 to 25 ft	midday	Deep basin (72 ft)

Notable structure

4 pieces of structure are mapped here — Deep basin, around 72 ft, is the deepest of them.

Deep basin: deep basin, around 72 ft
Break off the point: drop-off, around 51 ft
Main-lake point: point, around 30 ft
Shallow bay flat: feeding flat, around 10 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Bolgers Lake?

Bolgers Lake is about 72 ft (22 m) deep at its deepest point. The depth data here comes from the Ontario MNRF survey of 1982 (a transect sounding survey).

What fish are in Bolgers Lake?

Anglers target brook trout, brown bullhead on Bolgers Lake.

Where is the best fishing spot on Bolgers Lake?

Shallow bay flat is the top-rated area: a feeding flat in about 10 ft of water that rates prime for brown bullhead in summer. Scroll up to the map for the complete spot list by species and season.

When is the best time to fish Bolgers 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 Bolgers Lake?

Fishing on Bolgers 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

Lucas L. 1 mi · Triangle Lake 3 mi · Wilkie Lake 4 mi · Gaff Lake 4 mi · Lupus Lake 4 mi · Mikel Lake 5 mi · Astonish Lake 5 mi · Speckle Lake 5 mi · Bhymine Lake 5 mi · Cobre Lake 5 mi · Lillybet Lake 5 mi · Lost Eye Lake 5 mi

See how Bolgers Lake stacks up: best brook trout lakes in Ontario · best brown bullhead lakes in Ontario

More water nearby: Algoma District fishing maps (1026 charts). Browse all Ontario fishing maps or see every water on DepthScout. Bathymetry credit: state fisheries survey programs. 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.