Old Woman Lake Depth Map & Fishing Spots (Algoma District, ON)

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Lake depth chart

Old Woman Lake, ON

Max 30 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 on this water are approximations. Never use for navigation. Always check local regulations.

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Recent catches at Old Woman 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 Old Woman Lake on the board.

Fishing Old Woman Lake: what the data says

31-acre lake in Algoma District, Ontario. The lake tops out around 30 ft. The depth picture is modeled, anchored to the true shoreline and the water's published max depth — a scouting aid, never a chart to run a boat by. Here is how the season plays out for each species, straight from the data behind the map.

On the chart, Old Woman Lake draws 31 acres inside 2 miles of shoreline. The 2.6 development index tells the story — a convoluted bank whose fishable edge far outruns the acreage. Littoral water — the productive band under ~15 ft — makes up 84% of this chart, as modeled. Call it 0.7 mi long by 0.2 mi wide at the broadest reach. The water lies in Algoma District. Closest neighbour on DepthScout: Old Man Lake, 1 mi west of here.

Brook Trout fishing at Old Woman Lake

The spring pattern is a shallow one: brook trout in 2 to 15 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 3 to 20 ft for winter. The spot to know is Deep basin, a deep basin in about 26 ft of water that rates prime for brook trout in summer. Plan around early morning and the evening in the warm months. Summer baits: a small spoon fished deep or a trolled lake-clear wobbler + worm gets it done.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 15 ft	dawn & dusk	Main-lake point (8 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	Deep basin (26 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	Main-lake point (8 ft)	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Break off the point (14 ft)	Small jigging spoon, Tungsten jig + plastic

Notable structure

Structure-wise the chart holds 5 features, led in depth by Deep basin at roughly 26 ft.

Deep basin: deep basin, around 26 ft
Break off the point: drop-off, around 14 ft
Main-lake point: point, around 8 ft
Secondary point: point, around 8 ft
Shallow bay flat: weed flat, around 4 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is Old Woman Lake?

Old Woman Lake is about 30 ft (9 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 Old Woman Lake?

Anglers target brook trout on Old Woman Lake.

Where is the best fishing spot on Old Woman Lake?

Deep basin is the top-rated area: a deep basin in about 26 ft of water that rates prime for brook trout in summer. Every other rated spot, per species and season, is on the map above.

When is the best time to fish Old Woman 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 Old Woman Lake?

Fishing on Old Woman 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

Old Man Lake 1 mi · Martin Lake 2 mi · Spider L. 3 mi · Wart Lake 3 mi · Mongoose Lake 5 mi · Spruce Lake 5 mi · Tribble Lake 6 mi · Quintet Lakes 6 mi · Grey Owl Lake 7 mi · Gavor Lake 7 mi · Dyson Lake 7 mi · Meenach Lake 8 mi

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

More water nearby: Algoma District fishing maps (1026 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.