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533-acre lake near Québec. The lake tops out around 26 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. Species by species, here's what the data says the year looks like.
The outline encloses 533 acres, worked by 4.3 miles of shoreline. Nearly circular (index 1.3), so the story is the bottom, not the bank. Littoral water — the productive band under ~15 ft — makes up 67% of this chart. End to end it runs roughly 1.6 mi, about 0.9 mi across. It sits in Portneuf MRC. If the bite dies, Lac Sept Îles is 5 mi to the north.
Carte de pêche interactive gratuite — Lac Sergent, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 8 m (26 pi), et les meilleurs sites pour omble de fontaine, doré jaune, perchaude et plus. Les profondeurs proviennent de la Géobase des bathymétries de lac du Québec (MELCCFP) lorsque disponibles.
Spring brook trout on Lac Sergent hold shallow, usually 2 to 15 ft. By summer they slide out to 8 to 26 ft, and by winter most fish are in 3 to 20 ft. The chart's best answer is Deep basin — deep basin, 25 ft, prime for summer. Prime time lands in early morning and the evening. The summer box starts with a small spoon fished deep or a trolled lake-clear wobbler + worm.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 15 ft | dawn & dusk | Main-lake point (2 ft) | Small inline spinner (gold), Tiny spoon |
| Été | 8 to 26 ft | dawn & dusk | Deep basin (25 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Automne | 2 to 15 ft | midday & dawn | Main-lake point (2 ft) | Small spoon (orange), Spinner |
| Hiver | 3 to 20 ft | dawn | Break off the point (11 ft) | Small jigging spoon, Tungsten jig + plastic |
When the water first warms, chinook salmon slide up into 3 to 26 ft. There's no big seasonal slide here — summer means 8 to 26 ft, winter 8 to 26 ft. If you only fish one area, make it Deep basin: a deep basin around 25 ft that scores prime in summer. In summer the feeding windows fall in early morning and the evening. Keep a flasher + fly (green/white) or a magnum spoon on downrigger rigged through the warm months.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 26 ft | dawn & dusk | Break off the point (11 ft) | Trolled spoon (orange/gold), Stickbait off planer boards |
| Été | 8 to 26 ft | dawn & dusk | Deep basin (25 ft) | Flasher + fly (green/white), Magnum spoon on downrigger |
| Automne | 5 to 26 ft | dawn & dusk | Break off the point (11 ft) | J-plug (glow), Flasher + fly |
| Hiver | 8 to 26 ft | midday | Deep basin (25 ft) | Small spoon on a slow troll, Stickbait deep |
Spring puts walleye in skinny water — 4 to 15 ft is the zone. Warm water sends them out to 8 to 26 ft; cold water stacks them in 8 to 26 ft. Break off the point is the standout, a drop-off at roughly 11 ft, rated prime for fall walleye. Plan around the evening and early morning in the warm months. A crawler harness on bottom bouncer or a deep crankbait (trolled) covers the summer program.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 4 to 15 ft | dusk & dawn | Secondary point (8 ft) | 1/8 oz jig + minnow, Hair jig |
| Été | 8 to 26 ft | dusk & dawn | Break off the point (11 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Automne | 8 to 26 ft | dusk & night | Break off the point (11 ft) | Jigging rap, Jig + big minnow |
| Hiver | 8 to 26 ft | dusk & dawn | Deep basin (25 ft) | Jigging spoon + minnow head, Rattle bait |
Start shallow in spring: yellow perch sit in 3 to 12 ft that time of year. Warm water sends them out to 8 to 26 ft; cold water stacks them in 8 to 26 ft. Top water on the chart: Deep basin, a deep basin in the 25 ft range, prime in fall. Fish it in early morning and you'll meet the bite. Throw a drop-shot micro plastics or a small spoon tipped with worm until the fish tell you otherwise.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 12 ft | midday & dawn | Shallow bay flat (2 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Été | 8 to 26 ft | dawn | Deep basin (25 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Automne | 8 to 26 ft | midday | Deep basin (25 ft) | Jigging spoon (small), Perch rig / spreader |
| Hiver | 8 to 26 ft | midday & dawn | Deep basin (25 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Come spring, look for northern pike tight to the bank in 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 2 ft that scores prime in spring. Best bite is early morning and the evening. A bucktail or a weedless spoon over cabbage is the honest summer answer here.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 8 ft | midday & dawn | Shallow bay flat (2 ft) | #5 inline spinner, Spoon (red/white) |
| Été | 8 to 20 ft | dawn & dusk | Break off the point (11 ft) | Bucktail, Weedless spoon over cabbage |
| Automne | 6 to 18 ft | midday & dawn | Break off the point (11 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Hiver | 5 to 15 ft | midday | Secondary point (8 ft) | Tip-ups, Large jigging spoon |
When the water first warms, muskellunge slide up into 3 to 12 ft. By summer they slide out to 8 to 25 ft, and by winter most fish are in 8 to 26 ft. If you only fish one area, make it Break off the point: a drop-off around 11 ft that scores prime in fall. In summer the feeding windows fall in the evening and early morning. Keep a double-10 bucktail or a topwater (walk-the-dog / creeper) rigged through the warm months.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 12 ft | dusk | Shallow bay flat (2 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Été | 8 to 25 ft | dusk & dawn | Secondary point (8 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Automne | 7 to 26 ft | midday & dusk | Break off the point (11 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Hiver | 8 to 26 ft | midday | Deep basin (25 ft) | Large rubber, crawled slow |
The chart marks 6 structure features on Lac Sergent; the deepest is Deep basin at about 25 ft.
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 Sergent specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac Sergent is about 26 ft (8 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Lac Sergent atteint environ 8 m (26 pi) à son point le plus profond. Les profondeurs proviennent de relevés bathymétriques réels.
Anglers target brook trout, chinook salmon, walleye, yellow perch, northern pike, muskellunge on Lac Sergent. 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 25 ft of water that rates prime for chinook salmon in summer. The interactive chart above rates every 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 Sergent 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 Sept Îles 5 mi · Lac Saint-Joseph 5 mi · Lac Alain 7 mi · Lac Bonhomme 10 mi · Lac Bleu 13 mi · Lac de l'Oasis 13 mi · Lac Simon 15 mi · Lac du Sud-Ouest 15 mi · Lac Delage 17 mi · Lac Saint-Augustin 18 mi · Lac Clair 18 mi · Lac Long 19 mi
See how Lac Sergent stacks up: best walleye lakes in Québec · best northern pike lakes in Québec · best muskellunge lakes in Québec · best yellow perch lakes in Québec
More water nearby: Portneuf MRC fishing maps (95 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.