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Fishing Lac Desmarais: what the data says
314-acre lake near Québec. The lake tops out around 105 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. Below is the species-by-species picture, pulled from the same data the map uses.
Carte de pêche interactive gratuite — Lac Desmarais, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 32 m (105 pi), les meilleurs sites pour doré jaune, grand brochet, perchaude et touladi, fenêtres d'activité saisonnières et choix d'appâts. Aucune inscription requise. Les profondeurs proviennent de la Géobase des bathymétries de lac du Québec (MELCCFP) lorsque disponibles.
Walleye fishing at Lac Desmarais
Spring walleye on Lac Desmarais hold shallow, usually 4 to 15 ft. By summer they slide out to 15 to 35 ft, and by winter most fish are in 20 to 40 ft. Secondary point is the standout, a point at roughly 22 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.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 4 to 15 ft | dusk & dawn | 1/8 oz jig + minnow, Hair jig |
| Summer | 15 to 35 ft | dusk & dawn | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Fall | 12 to 40 ft | dusk & night | Jigging rap, Jig + big minnow |
| Winter | 20 to 40 ft | dusk & dawn | Jigging spoon + minnow head, Rattle bait |
Northern Pike fishing at Lac Desmarais
Spring northern pike on Lac Desmarais hold shallow, usually 2 to 8 ft. They move out to 8 to 20 ft in summer and finish the year down in 5 to 15 ft. The spot to know is Back-bay flat, a weed flat in about 15 ft of water that rates prime for northern pike in winter. Plan around early morning and the evening in the warm months. Summer baits: a bucktail or a weedless spoon over cabbage gets it done.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 2 to 8 ft | midday & dawn | #5 inline spinner, Spoon (red/white) |
| Summer | 8 to 20 ft | dawn & dusk | Bucktail, Weedless spoon over cabbage |
| Fall | 6 to 18 ft | midday & dawn | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Winter | 5 to 15 ft | midday | Tip-ups, Large jigging spoon |
Yellow Perch fishing at Lac Desmarais
Spring yellow perch on Lac Desmarais hold shallow, usually 3 to 12 ft. Summer pushes them deeper, 10 to 30 ft, and winter fish settle into 15 to 35 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 17 ft that scores prime in summer. Plan around early morning in the warm months. Tie on a drop-shot micro plastics or a small spoon tipped with worm and you're in the game.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 3 to 12 ft | midday & dawn | Small jig + curly tail, Perch-pattern micro crank |
| Summer | 10 to 30 ft | dawn | Drop-shot micro plastics, Small spoon tipped with worm |
| Fall | 12 to 35 ft | midday | Jigging spoon (small), Perch rig / spreader |
| Winter | 15 to 35 ft | midday & dawn | Tungsten jig + spikes, Rattle spoon (small) |
Lake Trout fishing at Lac Desmarais
Spring lake trout on Lac Desmarais hold shallow, usually 10 to 40 ft. By summer they slide out to 32 to 105 ft, and by winter most fish are in 20 to 80 ft. Deep basin is the standout, a deep basin at roughly 105 ft, rated prime for summer lake trout. Plan around early morning in the warm months. A white tube jig (deep) or a magnum spoon on downrigger covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 10 to 40 ft | dawn & dusk | Casting spoon over shoals, Jerkbait (shallow) |
| Summer | 32 to 105 ft | dawn | White tube jig (deep), Magnum spoon on downrigger |
| Fall | 10 to 50 ft | dusk & dawn | Heavy casting spoon, Jigging rap over reefs |
| Winter | 20 to 80 ft | dawn | White tube jig, Airplane jig |
Lake Whitefish fishing at Lac Desmarais
Start shallow in spring: lake whitefish sit in 15 to 45 ft that time of year. By summer they slide out to 40 to 90 ft, and by winter most fish are in 25 to 70 ft. Break off the point is the standout, a drop-off at roughly 64 ft, rated prime for summer lake whitefish. Plan around early morning in the warm months. A blade bait vertical or a small jigging spoon covers the summer program.
| Season | Depth | Best window | Go-to baits |
|---|---|---|---|
| Spring | 15 to 45 ft | midday & dawn | Small jig + waxworm, Blade bait (small) |
| Summer | 40 to 90 ft | dawn | Blade bait vertical, Small jigging spoon |
| Fall | 8 to 30 ft | dusk | Small spoon (gold), Jig + plastic larva |
| Winter | 25 to 70 ft | midday & dawn | Jigging spoon + bead chain, Tungsten jig + waxie |
Notable structure
- Deep basin: deep basin, around 105 ft
- Break off the point: drop-off, around 64 ft
- Shallow feeding flat: feeding flat, around 28 ft
- Secondary point: point, around 22 ft
- Shallow bay flat: weed flat, around 17 ft
- Back-bay flat: weed flat, around 15 ft
- Main-lake point: point, around 7 ft
Common questions
How deep is Lac Desmarais?
Lac Desmarais is about 105 ft at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
What fish are in Lac Desmarais?
Anglers target walleye, northern pike, yellow perch, lake trout, lake whitefish on Lac Desmarais.
Where is the best fishing spot on Lac Desmarais?
Back-bay flat is the top-rated area: a weed flat in about 15 ft of water that rates prime for northern pike in winter. Open the map above to see every rated spot for each species and season.
When is the best time to fish Lac Desmarais?
For walleye, the summer bite is best in the evening and early morning. Each species page section below lists the seasonal windows, and the map shows a live NOW badge when you're inside one.
Nearby waters
Lac Gélinas · Lac Mercier · Lac Bessette · Lac Lamoureux · Lac Duhamel · Lac Vézeau
See how Lac Desmarais stacks up: best walleye lakes in Québec · best northern pike lakes in Québec · best yellow perch lakes in Québec · best lake trout lakes in Québec
Browse all Québec fishing maps or every water on DepthScout. Bathymetry credit: state fisheries survey programs. How we build these maps. For fishing guidance only, never navigation.