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19-acre lake near Québec. The lake tops out around 33 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.
On the chart, Lac Lyonnais draws 19 acres inside 0.7 miles of shoreline. Its 1.2 shoreline index means few bank features; the contours below do the pattern work. About 65% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Call it 0.3 mi long by 0.2 mi wide at the broadest reach. The water lies in La Jacques-Cartier MRC. For a second option, Lac Beaujour lies 2 mi northeast.
Carte de pêche interactive gratuite — Lac Lyonnais, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 10 m (33 pi), et les meilleurs sites pour omble de fontaine, doré jaune et perchaude. Les profondeurs proviennent de la Géobase des bathymétries de lac du Québec (MELCCFP) lorsque disponibles.
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 Break off the point, a drop-off in about 9 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.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 15 ft | dawn & dusk | Main-lake point (3 ft) | Small inline spinner (gold), Tiny spoon |
| Été | 10 to 30 ft | dawn & dusk | Break off the point (9 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Automne | 2 to 15 ft | midday & dawn | Main-lake point (3 ft) | Small spoon (orange), Spinner |
| Hiver | 3 to 20 ft | dawn | Break off the point (9 ft) | Small jigging spoon, Tungsten jig + plastic |
Spring walleye on Lac Lyonnais hold shallow, usually 4 to 15 ft. They move out to 10 to 33 ft in summer and finish the year down in 10 to 33 ft. Put Deep basin first on the milk run — a deep basin near 32 ft that grades prime for winter. The feeding windows run the evening and early morning. The summer box starts with a crawler harness on bottom bouncer or a deep crankbait (trolled).
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 4 to 15 ft | dusk & dawn | Main-lake point (3 ft) | 1/8 oz jig + minnow, Hair jig |
| Été | 10 to 33 ft | dusk & dawn | Break off the point (9 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Automne | 10 to 33 ft | dusk & night | Break off the point (9 ft) | Jigging rap, Jig + big minnow |
| Hiver | 10 to 33 ft | dusk & dawn | Deep basin (32 ft) | Jigging spoon + minnow head, Rattle bait |
Early season yellow perch use the shallows, holding in 3 to 12 ft. Expect a summer slide to 10 to 30 ft, then a winter hold in 10 to 33 ft. Put Shallow bay flat first on the milk run — a weed flat near 6 ft that grades prime for spring. In summer the feeding windows fall in early morning. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 12 ft | midday & dawn | Shallow bay flat (6 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Été | 10 to 30 ft | dawn | Break off the point (9 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Automne | 10 to 33 ft | midday | Deep basin (32 ft) | Jigging spoon (small), Perch rig / spreader |
| Hiver | 10 to 33 ft | midday & dawn | Deep basin (32 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Lac Lyonnais carries 4 mapped structure features, topping out (or rather bottoming out) at Deep basin, about 32 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 Lyonnais specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac Lyonnais is about 33 ft (10 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Lac Lyonnais atteint environ 10 m (33 pi) à son point le plus profond. Les profondeurs proviennent de relevés bathymétriques réels.
Anglers target brook trout, walleye, yellow perch on Lac Lyonnais. 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 32 ft of water that rates prime for walleye in winter. 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 Lyonnais 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 Beaujour 2 mi · Lac de l'Éclaircie 3 mi · Lac Clark 3 mi · Lac Montendre 4 mi · Lac Comax 4 mi · Lac McCormick 5 mi · Lac Dion 7 mi · Lac Lonion 7 mi · Lac Jonquart 7 mi · Lac Taurelle 8 mi · Lac aux Rognons 8 mi · Lac Croche 8 mi
See how Lac Lyonnais stacks up: best walleye lakes in Québec · best yellow perch lakes in Québec · best brook trout lakes in Québec
More water nearby: La Jacques-Cartier MRC fishing maps (43 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.