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31-acre lake near Québec. The lake tops out around 68 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. What the data behind the map says about each species, season by season:
On the chart, Lac du Trépas draws 31 acres inside 0.9 miles of shoreline. The basin is a simple one (shoreline index 1.2) — close to a bowl, so the structure on the chart matters more than the bank. The shallow band under 15 ft claims about 13% of the surface — that's where the groceries are. Call it 0.4 mi long by 0.2 mi wide at the broadest reach. The water lies in Papineau MRC. For a second option, Lac Sikip lies 1 mi southwest.
Carte de pêche interactive gratuite — Lac du Trépas, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 21 m (68 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.
In spring, lake trout run shallow here, mostly 10 to 40 ft. Summer pushes them deeper, 20 to 68 ft, and winter fish settle into 17 to 68 ft. Deep basin is the standout, a deep basin at roughly 67 ft, rated prime for summer lake trout. Time it for early morning. You won't need more than a white tube jig (deep) or a magnum spoon on downrigger most summer days.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 10 to 40 ft | dawn & dusk | Shoreline break (22 ft) | Casting spoon over shoals, Jerkbait (shallow) |
| Été | 20 to 68 ft | dawn | Deep basin (67 ft) | White tube jig (deep), Magnum spoon on downrigger |
| Automne | 10 to 50 ft | dusk & dawn | Shoreline break (22 ft) | Heavy casting spoon, Jigging rap over reefs |
| Hiver | 17 to 68 ft | dawn | Deep basin (67 ft) | White tube jig, Airplane jig |
In spring, rainbow trout run shallow here, mostly 5 to 20 ft. Midsummer fish sit out in 8 to 30 ft before dropping to 8 to 40 ft for winter. Winter rainbow trout concentrate at Shoreline break, a prime-rated drop-off around 22 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a dodger + spoon (deep troll) or a flutter spoon most summer days.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 5 to 20 ft | dawn & dusk | Shoreline break (22 ft) | Inline spinner (silver), Small spoon |
| Été | 8 to 30 ft | dawn & dusk | Shoreline break (22 ft) | Dodger + spoon (deep troll), Flutter spoon |
| Automne | 10 to 35 ft | dawn & dusk | Shoreline break (22 ft) | Casting spoon, Jerkbait over shoals |
| Hiver | 8 to 40 ft | dawn | Shoreline break (22 ft) | Jigging spoon, Tube jig (white) |
When the water first warms, brown trout slide up into 3 to 25 ft. Summer is a 25 to 60 ft game here, winter a 5 to 35 ft one. Start at Shoreline break. It's a drop-off holding about 22 ft of water and rates prime come summer. The feeding windows run after dark and early morning. Keep a spoon at the thermocline or a deep stickbait (night) rigged through the warm months.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 25 ft | dawn & dusk | Shoreline break (22 ft) | Stickbait off planer boards (shallow), Small spoon along mud lines |
| Été | 25 to 60 ft | night & dawn | Shoreline break (22 ft) | Spoon at the thermocline, Deep stickbait (night) |
| Automne | 5 to 30 ft | dusk & dawn | Shoreline break (22 ft) | Jerkbait over gravel, Casting spoon |
| Hiver | 5 to 35 ft | dawn | Shoreline break (22 ft) | Jigging spoon, Small stickbait (slow) |
In spring, landlocked salmon run shallow here, mostly 1 to 15 ft. Midsummer fish sit out in 25 to 60 ft before dropping to 10 to 40 ft for winter. Winter landlocked salmon concentrate at Shoreline break, a prime-rated drop-off around 22 ft. Fish it in early morning and the evening and you'll meet the bite. You won't need more than a dodger + streamer down deep or a thin spoon on lead core most summer days.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 1 to 15 ft | dawn & dusk | open water | Streamer flies (Grey Ghost) off boards, Thin spoon (Mooselook style) |
| Été | 25 to 60 ft | dawn & dusk | Deep basin (67 ft) | Dodger + streamer down deep, Thin spoon on lead core |
| Automne | 5 to 30 ft | dawn & dusk | Shoreline break (22 ft) | Casting spoon at the mouths, Streamers |
| Hiver | 10 to 40 ft | dawn | Shoreline break (22 ft) | Small jigging spoon, Swedish pimple + smelt |
Spring arctic char on Lac du Trépas hold shallow, usually 4 to 15 ft. By summer they slide out to 20 to 60 ft, and by winter most fish are in 10 to 40 ft. The chart's best answer is Shoreline break — drop-off, 22 ft, prime for summer. Prime time lands in early morning. The summer box starts with a jigging spoon vertical or a tube jig (smelt).
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 4 to 15 ft | midday & dawn | Shallow bay flat (11 ft) | Small casting spoon (silver/orange), Jerkbait (small) |
| Été | 20 to 60 ft | dawn | Shoreline break (22 ft) | Jigging spoon vertical, Tube jig (smelt) |
| Automne | 8 to 30 ft | midday & dusk | Shoreline break (22 ft) | Casting spoon (orange/gold), Beadhead streamer |
| Hiver | 10 to 40 ft | midday & dawn | Shoreline break (22 ft) | Jigging spoon (glow/silver), Tungsten jig + plastic |
Spring lake whitefish on Lac du Trépas hold shallow, usually 15 to 45 ft. By summer they slide out to 20 to 68 ft, and by winter most fish are in 20 to 68 ft. The chart's best answer is Deep basin — deep basin, 67 ft, prime for summer. Prime time lands in early morning. The summer box starts with a blade bait vertical or a small jigging spoon.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 15 to 45 ft | midday & dawn | Shoreline break (22 ft) | Small jig + waxworm, Blade bait (small) |
| Été | 20 to 68 ft | dawn | Deep basin (67 ft) | Blade bait vertical, Small jigging spoon |
| Automne | 8 to 30 ft | dusk | Shoreline break (22 ft) | Small spoon (gold), Jig + plastic larva |
| Hiver | 20 to 68 ft | midday & dawn | Deep basin (67 ft) | Jigging spoon + bead chain, Tungsten jig + waxie |
Lac du Trépas also holds walleye (15 to 35 ft in summer), 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 (20 to 68 ft in summer). Pick any of them on the map above for rated spots and bait picks.
The chart marks 4 structure features on Lac du Trépas; the deepest is Deep basin at about 67 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 Trépas specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac du Trépas is about 68 ft (21 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 Trépas atteint environ 21 m (68 pi) à son point le plus profond. Les profondeurs proviennent de relevés bathymétriques réels.
Anglers target lake trout, rainbow trout, brown trout, landlocked salmon, 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 Trépas. 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 67 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 Trépas 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 Sikip 1 mi · Lac des Bois 2 mi · Lac Raphaël 2 mi · Lac Plat 3 mi · Lac Écho 3 mi · Lac Croche 3 mi · Petit lac Plat 3 mi · Lac de l'Île 3 mi · Lac Travers 3 mi · Lac Vert 3 mi · Lac Rocheux 3 mi · Lac des Pins 3 mi
See how Lac du Trépas 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: Papineau MRC fishing maps (60 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.