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85-acre lake near Québec. The lake tops out around 53 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.
On the chart, Lac du Rocher draws 85 acres inside 2.1 miles of shoreline. The shoreline is moderately structured (index 1.7) — enough points and pockets to pattern. The shallow band under 15 ft claims about 42% of the surface — that's where the groceries are. Tip to tip the water measures near 1 mi with a 0.3-mi widest point. The water lies in Joliette MRC. For a second option, Lac des Français lies 4 mi southwest.
Carte de pêche interactive gratuite — Lac du Rocher, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 16 m (53 pi), et les meilleurs sites pour touladi, truite arc-en-ciel, truite brune et plus. Les profondeurs proviennent de la Géobase des bathymétries de lac du Québec (MELCCFP) lorsque disponibles.
Spring puts lake trout in skinny water — 10 to 40 ft is the zone. As the season builds they drop to 16 to 53 ft, wintering in 13 to 53 ft. Summer lake trout concentrate at Deep basin, a prime-rated deep basin around 52 ft. Warm-month bites cluster around early morning. A white tube jig (deep) or a magnum spoon on downrigger covers the summer program.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 10 to 40 ft | dawn & dusk | Break off the point (16 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Été | 16 to 53 ft | dawn | Deep basin (52 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Automne | 10 to 50 ft | dusk & dawn | Break off the point (16 ft) | Heavy casting spoon, Jigging rap over reefs |
| Hiver | 13 to 53 ft | dawn | Deep basin (52 ft) | White tube jig, Airplane jig |
Spring puts rainbow trout in skinny water — 5 to 20 ft is the zone. Warm water sends them out to 8 to 30 ft; cold water stacks them in 8 to 40 ft. Break off the point is the standout, a drop-off at roughly 16 ft, rated prime for winter rainbow trout. Plan around early morning and the evening in the warm months. A dodger + spoon (deep troll) or a flutter spoon covers the summer program.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 5 to 20 ft | dawn & dusk | Secondary point (6 ft) | Inline spinner (silver), Small spoon |
| Été | 8 to 30 ft | dawn & dusk | Break off the point (16 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Automne | 10 to 35 ft | dawn & dusk | Break off the point (16 ft) | Casting spoon, Jerkbait over shoals |
| Hiver | 8 to 40 ft | dawn | Break off the point (16 ft) | Jigging spoon, Tube jig (white) |
Come spring, look for brown trout tight to the bank in 3 to 25 ft. They move out to 16 to 53 ft in summer and finish the year down in 5 to 35 ft. If you only fish one area, make it Break off the point: a drop-off around 16 ft that scores prime in summer. Best bite is after dark and early morning. A spoon at the thermocline or a deep stickbait (night) is the honest summer answer here.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 25 ft | dawn & dusk | Secondary point (6 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Été | 16 to 53 ft | night & dawn | Break off the point (16 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Automne | 5 to 30 ft | dusk & dawn | Secondary point (6 ft) | Jerkbait over gravel, Casting spoon |
| Hiver | 5 to 35 ft | dawn | Break off the point (16 ft) | Jigging spoon, Small stickbait (slow) |
Early season arctic char use the shallows, holding in 4 to 15 ft. Expect a summer slide to 16 to 53 ft, then a winter hold in 10 to 40 ft. Put Deep basin first on the milk run — a deep basin near 52 ft that grades prime for summer. In summer the feeding windows fall in early morning. Tie on a jigging spoon vertical or a tube jig (smelt) and you're in the game.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 4 to 15 ft | midday & dawn | Break off the point (16 ft) | Small casting spoon (silver/orange), Jerkbait (small) |
| Été | 16 to 53 ft | dawn | Deep basin (52 ft) | Jigging spoon vertical, Tube jig (smelt) |
| Automne | 8 to 30 ft | midday & dusk | Break off the point (16 ft) | Casting spoon (orange/gold), Beadhead streamer |
| Hiver | 10 to 40 ft | midday & dawn | Break off the point (16 ft) | Jigging spoon (glow/silver), Tungsten jig + plastic |
Early season lake whitefish use the shallows, holding in 15 to 45 ft. Expect a summer slide to 16 to 53 ft, then a winter hold in 16 to 53 ft. Put Deep basin first on the milk run — a deep basin near 52 ft that grades prime for summer. In summer the feeding windows fall in early morning. Tie on a blade bait vertical or a small jigging spoon and you're in the game.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 15 to 45 ft | midday & dawn | Break off the point (16 ft) | Small jig + waxworm, Blade bait (small) |
| Été | 16 to 53 ft | dawn | Deep basin (52 ft) | Blade bait vertical, Small jigging spoon |
| Automne | 8 to 30 ft | dusk | Break off the point (16 ft) | Small spoon (gold), Jig + plastic larva |
| Hiver | 16 to 53 ft | midday & dawn | Deep basin (52 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Come spring, look for walleye tight to the bank in 4 to 15 ft. They move out to 15 to 35 ft in summer and finish the year down in 20 to 40 ft. If you only fish one area, make it Break off the point: a drop-off around 16 ft that scores prime in fall. Best bite is the evening and early morning. A crawler harness on bottom bouncer or a deep crankbait (trolled) is the honest summer answer here.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 4 to 15 ft | dusk & dawn | Secondary point (6 ft) | 1/8 oz jig + minnow, Hair jig |
| Été | 15 to 35 ft | dusk & dawn | Break off the point (16 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Automne | 12 to 40 ft | dusk & night | Break off the point (16 ft) | Jigging rap, Jig + big minnow |
| Hiver | 20 to 40 ft | dusk & dawn | Break off the point (16 ft) | Jigging spoon + minnow head, Rattle bait |
Lac du Rocher also holds yellow perch (10 to 30 ft in summer), northern pike (8 to 20 ft in summer), smallmouth bass (10 to 30 ft in summer), largemouth bass (8 to 20 ft in summer), rock bass (5 to 20 ft in summer), crappie (10 to 25 ft in summer), pumpkinseed (2 to 10 ft in summer), brown bullhead (3 to 12 ft in summer), channel catfish (8 to 25 ft in summer), burbot (16 to 53 ft in summer). Pick any of them on the map above for rated spots and bait picks.
The chart marks 6 structure features on Lac du Rocher; the deepest is Deep basin at about 52 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 du Rocher specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac du Rocher is about 53 ft (16 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Lac du Rocher atteint environ 16 m (53 pi) à son point le plus profond. Les profondeurs proviennent de relevés bathymétriques réels.
Anglers target lake trout, rainbow trout, brown trout, arctic char, lake whitefish, walleye, yellow perch, northern pike, smallmouth bass, largemouth bass, rock bass, crappie, pumpkinseed, brown bullhead, channel catfish, burbot on Lac du Rocher. 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 52 ft of water that rates prime for lake trout in summer. Scroll up to the map for the complete spot list by species and season.
For lake trout, the summer bite is best in early morning. 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 du Rocher 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 des Français 4 mi · Lac Cloutier 5 mi · Lac Stevens 5 mi · Lac Long 6 mi · Lac Loyer 6 mi · Lac Pierre 7 mi · Lac Rouge 8 mi · Lac Berthier 8 mi · Lac Vert 8 mi · Lac Noir 8 mi · Lac Mondor 8 mi · Lac des Pins 9 mi
See how Lac du Rocher 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
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.