Sign inSign up free Sign inSign up free Sign inSign up freeShared by DepthScout anglers. Exact spots stay private, always.
998-acre lake near Québec. The lake tops out around 64 ft. The depth chart is built from real state fisheries GPS surveys, so the humps, channels and drop-offs you see are measured, not guessed. Here's the year, species by species, as the scoring engine sees it.
Drawn out, this is 998 acres of water rimmed by 7 miles of bank. Index 1.6 on the shoreline: a few honest points and pockets, nothing labyrinthine. 20% of the surface is littoral (under ~15 ft) — cover, weeds and forage water. Call it 3.3 mi long by 0.7 mi wide at the broadest reach. You'll find it in Les Basques MRC. Closest neighbour on DepthScout: Petit lac Saint-Mathieu, 3 mi northeast of here.
Carte de pêche interactive gratuite — Lac Saint-Mathieu, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 20 m (64 pi), et les meilleurs sites pour omble de fontaine, touladi, ouananiche et plus. Les profondeurs proviennent de la Géobase des bathymétries de lac du Québec (MELCCFP) lorsque disponibles.
Start shallow in spring: brook trout sit in 2 to 15 ft that time of year. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 3 to 20 ft. The spot to know is Break off the point, a drop-off in about 30 ft of water that rates prime for brook trout in summer. Warm-month bites cluster around early morning and the evening. Throw a small spoon fished deep or a trolled lake-clear wobbler + worm until the fish tell you otherwise.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 15 ft | dawn & dusk | Main-lake point (11 ft) | Small inline spinner (gold), Tiny spoon |
| Été | 10 to 30 ft | dawn & dusk | Break off the point (30 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Automne | 2 to 15 ft | midday & dawn | Main-lake point (11 ft) | Small spoon (orange), Spinner |
| Hiver | 3 to 20 ft | dawn | Shallow bay flat (5 ft) | Small jigging spoon, Tungsten jig + plastic |
Start shallow in spring: lake trout sit in 10 to 40 ft that time of year. Warm water sends them out to 19 to 64 ft; cold water stacks them in 16 to 64 ft. Top water on the chart: Deep basin, a deep basin in the 64 ft range, prime in summer. Fish it in early morning and you'll meet the bite. Throw a white tube jig (deep) or a magnum spoon on downrigger until the fish tell you otherwise.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 10 to 40 ft | dawn & dusk | Main-lake point (11 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Été | 19 to 64 ft | dawn | Deep basin (64 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Automne | 10 to 50 ft | dusk & dawn | Main-lake point (11 ft) | Heavy casting spoon, Jigging rap over reefs |
| Hiver | 16 to 64 ft | dawn | Deep basin (64 ft) | White tube jig, Airplane jig |
The spring pattern is a shallow one: landlocked salmon in 1 to 15 ft. As the season builds they drop to 25 to 60 ft, wintering in 10 to 40 ft. Top water on the chart: Deep basin, a deep basin in the 64 ft range, prime in summer. Time it for early morning and the evening. Summer baits: a dodger + streamer down deep or a thin spoon on lead core gets it done.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 1 to 15 ft | dawn & dusk | Main-lake point (11 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Été | 25 to 60 ft | dawn & dusk | Deep basin (64 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Automne | 5 to 30 ft | dawn & dusk | Main-lake point (11 ft) | Casting spoon at the mouths, Streamers |
| Hiver | 10 to 40 ft | dawn | Break off the point (30 ft) | Small jigging spoon, Swedish pimple + smelt |
When the water first warms, lake whitefish slide up into 15 to 45 ft. Summer is a 19 to 64 ft game here, winter a 19 to 64 ft one. Start at Deep basin. It's a deep basin holding about 64 ft of water and rates prime come summer. The feeding windows run early morning. Keep a blade bait vertical or a small jigging spoon rigged through the warm months.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 15 to 45 ft | midday & dawn | Break off the point (30 ft) | Small jig + waxworm, Blade bait (small) |
| Été | 19 to 64 ft | dawn | Deep basin (64 ft) | Blade bait vertical, Small jigging spoon |
| Automne | 8 to 30 ft | dusk | Break off the point (30 ft) | Small spoon (gold), Jig + plastic larva |
| Hiver | 19 to 64 ft | midday & dawn | Deep basin (64 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Spring yellow perch on Lac Saint-Mathieu hold shallow, usually 3 to 12 ft. They move out to 10 to 30 ft in summer and finish the year down in 15 to 35 ft. Put Shallow bay flat first on the milk run — a weed flat near 5 ft that grades prime for spring. The feeding windows run early morning. The summer box starts with a drop-shot micro plastics or a small spoon tipped with worm.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 12 ft | midday & dawn | Shallow bay flat (5 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Été | 10 to 30 ft | dawn | Break off the point (30 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Automne | 12 to 35 ft | midday | Break off the point (30 ft) | Jigging spoon (small), Perch rig / spreader |
| Hiver | 15 to 35 ft | midday & dawn | Break off the point (30 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring striped bass on Lac Saint-Mathieu hold shallow, usually 5 to 20 ft. They move out to 25 to 60 ft in summer and finish the year down in 20 to 50 ft. Put Main-lake point first on the milk run — a point near 11 ft that grades prime for fall. The feeding windows run early morning and the evening. The summer box starts with a flutter spoon (deep) or an umbrella rig (trolled).
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 5 to 20 ft | dawn & dusk | Main-lake point (11 ft) | Bucktail jig + trailer, Walking topwater (dawn) |
| Été | 25 to 60 ft | dawn & dusk | Break off the point (30 ft) | Flutter spoon (deep), Umbrella rig (trolled) |
| Automne | 10 to 35 ft | dawn & dusk | Main-lake point (11 ft) | Topwater walker, Jerkbait |
| Hiver | 20 to 50 ft | midday | Break off the point (30 ft) | Alabama rig (slow), Flutter spoon |
Lac Saint-Mathieu also holds brown bullhead (3 to 12 ft in summer), burbot (19 to 64 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Lac Saint-Mathieu carries 8 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 64 ft down.
Access data: OpenStreetMap contributors (ODbL) — community-mapped launches. Confirm conditions and fees locally before you launch.
Season dates, license requirements, and size and bag limits for Québec waters are set by the Québec sport fishing rules (MELCCFP) — and special regulations can apply to Lac Saint-Mathieu specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac Saint-Mathieu is about 64 ft (20 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Lac Saint-Mathieu atteint environ 20 m (64 pi) à son point le plus profond. Les profondeurs proviennent de relevés bathymétriques réels.
Anglers target brook trout, lake trout, landlocked salmon, lake whitefish, yellow perch, striped bass, brown bullhead, burbot on Lac Saint-Mathieu. This species list is an informed estimate from Québec's provincial fish-range maps (bounded by each lake's depth and habitat), not a per-lake fish survey — Québec doesn't publish per-lake species records.
Deep basin is the top-rated area: a deep basin in about 64 ft of water that rates prime for lake trout in summer. Every other rated spot, per species and season, is on the map above.
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.
Fishing on Lac Saint-Mathieu is regulated by the Québec sport fishing rules (MELCCFP). Check the official Québec regulations for current license requirements, season dates, and size and bag limits — special regulations can apply to this specific water.
Petit lac Saint-Mathieu 3 mi · Grand lac Touradi 17 mi · Petit lac Touradi 17 mi · Lac Ferré 27 mi · Lac Saint-Hubert 27 mi · Lac Saint-François 31 mi · Lac des Échos 31 mi · Grand lac Touladi 32 mi · Lac Saint-Jean 32 mi · Lac du Canard 33 mi · Lac du Castor 34 mi · Lac du Serpent 34 mi
See how Lac Saint-Mathieu stacks up: best striped bass lakes in Québec · best yellow perch lakes in Québec · best lake trout lakes in Québec · best brook trout lakes in Québec
Browse all Québec 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.