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

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Lake depth chart

First Lake, ON

Max 53 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 First 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 First Lake on the board.

Fishing First Lake: what the data says

52-acre lake in Algoma District, Ontario. The lake tops out around 53 ft. These contours are modeled — built from the real shoreline and the water's maximum depth — so read them as a guide, never as navigation. Species by species, here's what the data says the year looks like.

On the chart, First Lake draws 51 acres inside 1.5 miles of shoreline. Index 1.5 on the shoreline: a few honest points and pockets, nothing labyrinthine. About 35% of the surface sits shallower than 15 ft on the modeled chart — that's the weed-and-bait zone. Tip to tip the water measures near 0.6 mi with a 0.2-mi widest point. The water lies in Algoma District. For a second option, Second Lake lies 0 mi southwest.

Brook Trout fishing at First 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: Break off the point, a drop-off in the 24 ft range, prime in summer. 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 (13 ft)	Small inline spinner (gold), Tiny spoon
Summer	10 to 30 ft	dawn & dusk	Break off the point (24 ft)	Small spoon fished deep, Trolled lake-clear wobbler + worm
Fall	2 to 15 ft	midday & dawn	Main-lake point (13 ft)	Small spoon (orange), Spinner
Winter	3 to 20 ft	dawn	Shallow bay flat (6 ft)	Small jigging spoon, Tungsten jig + plastic

Rock Bass fishing at First Lake

When the water first warms, rock bass slide up into 2 to 10 ft. By summer they slide out to 5 to 20 ft, and by winter most fish are in 12 to 30 ft. If you only fish one area, make it Main-lake point: a point around 13 ft that scores prime in summer. In summer the feeding windows fall in the evening. Keep a ned rig (small) or a marabou jig rigged through the warm months.

Season	Depth	Best window	Start at	Go-to baits
Spring	2 to 10 ft	midday & dawn	open water	1/16 oz jig + grub, Small inline spinner
Summer	5 to 20 ft	dusk	Main-lake point (13 ft)	Ned rig (small), Marabou jig
Fall	8 to 22 ft	midday	Main-lake point (13 ft)	Small tube jig, Inline spinner
Winter	12 to 30 ft	midday	Break off the point (24 ft)	Tungsten jig + plastic, Small spoon + spike

Notable structure

First Lake carries 5 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 45 ft down.

Deep basin: deep basin, around 45 ft
Break off the point: drop-off, around 24 ft
Main-lake point: point, around 13 ft
Secondary point: point, around 13 ft
Shallow bay flat: weed flat, around 6 ft

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

Check the official Ontario fishing regulations →

Common questions

How deep is First Lake?

First Lake is about 53 ft (16 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 First Lake?

Anglers target brook trout, rock bass on First Lake.

Where is the best fishing spot on First Lake?

Main-lake point is the top-rated area: a point in about 13 ft of water that rates prime for rock bass in summer. Scroll up to the map for the complete spot list by species and season.

When is the best time to fish First 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 First Lake?

Fishing on First 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

Second Lake 0 mi · Slipper Lake 1 mi · Esten Lake 1 mi · Horne Lake 2 mi · Porridge Lake 2 mi · Elliot L. 2 mi · Spur Lake 3 mi · Mink Lake 3 mi · Nordic Lake 3 mi · Quimby Lake 3 mi · Marshland Lake 4 mi · Strouth Lake 4 mi

See how First Lake stacks up: best brook trout lakes in Ontario · best rock bass 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.