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14-acre lake near Québec. The lake tops out around 10 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. What the data behind the map says about each species, season by season:
The outline encloses 14 acres, worked by 0.7 miles of shoreline. Nearly circular (index 1.2), so the story is the bottom, not the bank. Nothing on this chart breaks 15 ft, which makes the whole surface littoral: weeds, bait and ambush cover everywhere. Tip to tip the water measures near 0.3 mi. It sits in Mékinac MRC. Lac du Diablotin sits 1 mi southwest — the closest neighbouring chart.
Carte de pêche interactive gratuite — Lac Thom, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 3 m (10 pi), et les meilleurs sites pour omble de fontaine, ouananiche, doré jaune et plus. Les profondeurs proviennent de la Géobase des bathymétries de lac du Québec (MELCCFP) lorsque disponibles.
When the water first warms, brook trout slide up into 1 to 10 ft. There's no big seasonal slide here — summer means 3 to 10 ft, winter 2 to 10 ft. If you only fish one area, make it Deep basin: a deep basin around 10 ft that scores prime in summer. 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.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 1 to 10 ft | dawn & dusk | Main-lake point (3 ft) | Small inline spinner (gold), Tiny spoon |
| Été | 3 to 10 ft | dawn & dusk | Deep basin (10 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Automne | 1 to 10 ft | midday & dawn | Main-lake point (3 ft) | Small spoon (orange), Spinner |
| Hiver | 2 to 10 ft | dawn | Deep basin (10 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for landlocked salmon tight to the bank in 1 to 10 ft. Through summer count on 3 to 10 ft; the winter hold is 3 to 10 ft. Start at Deep basin. It's a deep basin holding about 10 ft of water and rates prime come summer. Prime time lands in early morning and the evening. A dodger + streamer down deep or a thin spoon on lead core is the honest summer answer here.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 1 to 10 ft | dawn & dusk | Main-lake point (3 ft) | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Été | 3 to 10 ft | dawn & dusk | Deep basin (10 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Automne | 2 to 10 ft | dawn & dusk | Main-lake point (3 ft) | Casting spoon at the mouths, Streamers |
| Hiver | 3 to 10 ft | dawn | Deep basin (10 ft) | Small jigging spoon, Swedish pimple + smelt |
Start shallow in spring: walleye sit in 3 to 10 ft that time of year. They don't go far with the seasons — 3 to 10 ft covers summer, 3 to 10 ft covers winter. Top water on the chart: Break off the point, a drop-off in the 10 ft range, prime in fall. Fish it in the evening and early morning and you'll meet the bite. Throw a crawler harness on bottom bouncer or a deep crankbait (trolled) until the fish tell you otherwise.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 10 ft | dusk & dawn | Main-lake point (3 ft) | 1/8 oz jig + minnow, Hair jig |
| Été | 3 to 10 ft | dusk & dawn | Break off the point (10 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Automne | 3 to 10 ft | dusk & night | Break off the point (10 ft) | Jigging rap, Jig + big minnow |
| Hiver | 3 to 10 ft | dusk & dawn | Deep basin (10 ft) | Jigging spoon + minnow head, Rattle bait |
Spring puts yellow perch in skinny water — 3 to 10 ft is the zone. Summer fish stay in 3 to 10 ft, and winter fish hold in 3 to 10 ft. Deep basin is the standout, a deep basin at roughly 10 ft, rated prime for fall yellow perch. Plan around early morning in the warm months. A drop-shot micro plastics or a small spoon tipped with worm covers the summer program.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 10 ft | midday & dawn | open water | Small jig + curly tail, Perch-pattern micro crank |
| Été | 3 to 10 ft | dawn | Deep basin (10 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Automne | 3 to 10 ft | midday | Deep basin (10 ft) | Jigging spoon (small), Perch rig / spreader |
| Hiver | 3 to 10 ft | midday & dawn | Deep basin (10 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Spring northern pike on Lac Thom hold shallow, usually 2 to 8 ft. They move out to 3 to 10 ft in summer and finish the year down in 3 to 10 ft. Put Break off the point first on the milk run — a drop-off near 10 ft that grades prime for fall. The feeding windows run early morning and the evening. The summer box starts with a bucktail or a weedless spoon over cabbage.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 8 ft | midday & dawn | open water | #5 inline spinner, Spoon (red/white) |
| Été | 3 to 10 ft | dawn & dusk | Break off the point (10 ft) | Bucktail, Weedless spoon over cabbage |
| Automne | 3 to 10 ft | midday & dawn | Break off the point (10 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Hiver | 3 to 10 ft | midday | Main-lake point (3 ft) | Tip-ups, Large jigging spoon |
Lac Thom carries 3 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 10 ft down.
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 Thom specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac Thom is about 10 ft (3 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Lac Thom atteint environ 3 m (10 pi) à son point le plus profond. Les profondeurs proviennent de relevés bathymétriques réels.
Anglers target brook trout, landlocked salmon, walleye, yellow perch, northern pike on Lac Thom. 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 10 ft of water that rates prime for landlocked salmon in summer. Open the map above to see every rated spot for each species and season.
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 Thom 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.
Lac du Diablotin 1 mi · Lac Corbeil 1 mi · Lac du Canard 1 mi · Lac Soucis 2 mi · Lac Balthazar 3 mi · Lac Gaspard 3 mi · Lac Marshalls 3 mi · Lac Melchior 3 mi · Lac Normand 3 mi · Lac Laviolette 3 mi · Lac Konke 3 mi · Lac de la Marmotte 4 mi
See how Lac Thom stacks up: best walleye lakes in Québec · best northern pike lakes in Québec · best yellow perch lakes in Québec · best brook trout lakes in Québec
More water nearby: Mékinac MRC fishing maps (99 charts). 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.