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123-acre lake near Québec. The lake tops out around 23 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.
The drawn water covers 123 acres wrapped in 2.1 miles of bank. A shoreline index of 1.4 says round and simple: fish relate to depth changes here, not shoreline features. Littoral water — the productive band under ~15 ft — makes up 93% of this chart. The basin spans about 0.6 mi end to end and 0.6 mi across at its widest. It sits in Le Val-Saint-François MRC. Petit lac Brompton sits 1 mi southeast — the closest neighbouring chart.
Carte de pêche interactive gratuite — Lac Desmarais, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 7 m (23 pi), et les meilleurs sites pour truite arc-en-ciel, truite brune, doré jaune et plus. Les profondeurs proviennent de la Géobase des bathymétries de lac du Québec (MELCCFP) lorsque disponibles.
Early season rainbow trout use the shallows, holding in 5 to 20 ft. Expect a summer slide to 6 to 23 ft, then a winter hold in 5 to 23 ft. Put Break off the point first on the milk run — a drop-off near 9 ft that grades prime for winter. In summer the feeding windows fall in early morning and the evening. Tie on a dodger + spoon (deep troll) or a flutter spoon and you're in the game.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 5 to 20 ft | dawn & dusk | Main-lake point (7 ft) | Inline spinner (silver), Small spoon |
| Été | 6 to 23 ft | dawn & dusk | Break off the point (9 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Automne | 7 to 23 ft | dawn & dusk | Main-lake point (7 ft) | Casting spoon, Jerkbait over shoals |
| Hiver | 5 to 23 ft | dawn | Break off the point (9 ft) | Jigging spoon, Tube jig (white) |
Spring puts brown trout in skinny water — 3 to 23 ft is the zone. Summer fish stay in 7 to 23 ft, and winter fish hold in 3 to 23 ft. Break off the point is the standout, a drop-off at roughly 9 ft, rated prime for summer brown trout. Plan around after dark and early morning in the warm months. A spoon at the thermocline or a deep stickbait (night) covers the summer program.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 23 ft | dawn & dusk | Main-lake point (7 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Été | 7 to 23 ft | night & dawn | Break off the point (9 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Automne | 4 to 23 ft | dusk & dawn | Main-lake point (7 ft) | Jerkbait over gravel, Casting spoon |
| Hiver | 3 to 23 ft | dawn | Break off the point (9 ft) | Jigging spoon, Small stickbait (slow) |
Spring puts walleye in skinny water — 4 to 15 ft is the zone. Warm water sends them out to 7 to 23 ft; cold water stacks them in 7 to 23 ft. Break off the point is the standout, a drop-off at roughly 9 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 | Main-lake point (7 ft) | 1/8 oz jig + minnow, Hair jig |
| Été | 7 to 23 ft | dusk & dawn | Break off the point (9 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Automne | 7 to 23 ft | dusk & night | Break off the point (9 ft) | Jigging rap, Jig + big minnow |
| Hiver | 7 to 23 ft | dusk & dawn | Deep basin (20 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 7 to 23 ft; cold water stacks them in 7 to 23 ft. Top water on the chart: Shallow bay flat, a weed flat in the 3 ft range, prime in spring. 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 (3 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Été | 7 to 23 ft | dawn | Deep basin (20 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Automne | 7 to 23 ft | midday | Deep basin (20 ft) | Jigging spoon (small), Perch rig / spreader |
| Hiver | 7 to 23 ft | midday & dawn | Deep basin (20 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 3 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 (3 ft) | #5 inline spinner, Spoon (red/white) |
| Été | 8 to 20 ft | dawn & dusk | Break off the point (9 ft) | Bucktail, Weedless spoon over cabbage |
| Automne | 6 to 18 ft | midday & dawn | Break off the point (9 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Hiver | 5 to 15 ft | midday | Back-bay flat (4 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 7 to 23 ft, and by winter most fish are in 7 to 23 ft. If you only fish one area, make it Break off the point: a drop-off around 9 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 (3 ft) | Smaller bucktail (#8 blades), 6" glide bait |
| Été | 7 to 23 ft | dusk & dawn | Main-lake point (7 ft) | Double-10 bucktail, Topwater (walk-the-dog / creeper) |
| Automne | 6 to 23 ft | midday & dusk | Break off the point (9 ft) | Big rubber (Bull Dawg style), 10"+ glide bait |
| Hiver | 7 to 23 ft | midday | Deep basin (20 ft) | Large rubber, crawled slow |
Lac Desmarais also holds smallmouth bass (7 to 23 ft in summer), largemouth bass (8 to 20 ft in summer), rock bass (5 to 20 ft in summer), pumpkinseed (2 to 10 ft in summer), brown bullhead (3 to 12 ft in summer), common carp (3 to 15 ft in summer), chain pickerel (3 to 15 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Structure-wise the chart holds 6 features, led in depth by Deep basin at roughly 20 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 Desmarais specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac Desmarais is about 23 ft (7 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Lac Desmarais atteint environ 7 m (23 pi) à son point le plus profond. Les profondeurs proviennent de relevés bathymétriques réels.
Anglers target rainbow trout, brown trout, walleye, yellow perch, northern pike, muskellunge, smallmouth bass, largemouth bass, rock bass, pumpkinseed, brown bullhead, common carp, chain pickerel on Lac Desmarais. 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.
Break off the point is the top-rated area: a drop-off in about 9 ft of water that rates prime for walleye in fall. The map above holds the full rated-spot list for every species and season.
For rainbow 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 Desmarais 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 Brompton 1 mi · Lac Brompton 2 mi · Lac Montjoie 4 mi · Lac Miller 4 mi · Lac Brais 4 mi · Lac Simoneau 5 mi · Lac des Monts 5 mi · Lac des Français 5 mi · Lac Bowker 5 mi · Lac Fraser 6 mi · Lac à la Truite 8 mi · Lac Stukely 8 mi
See how Lac Desmarais stacks up: best largemouth bass lakes in Québec · best smallmouth bass lakes in Québec · best walleye lakes in Québec · best northern pike lakes in Québec
More water nearby: Le Val-Saint-François MRC fishing maps (8 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.