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90-acre lake near Québec. The lake tops out around 28 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 Berthier draws 90 acres inside 1.5 miles of shoreline. Nearly circular (index 1.1), so the story is the bottom, not the bank. The shallow band under 15 ft claims about 57% of the surface — that's where the groceries are. Figure 0.6 mi of water from one end to the other, 0.3 mi at the beam. You'll find it in Matawinie MRC. For a second option, Lac Mondor lies 3 mi northwest.
Carte de pêche interactive gratuite — Lac Berthier, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 9 m (28 pi), et les meilleurs sites pour omble de fontaine, doré jaune, perchaude et plus. Les profondeurs proviennent de la Géobase des bathymétries de lac du Québec (MELCCFP) lorsque disponibles.
In spring, brook trout run shallow here, mostly 2 to 15 ft. Summer pushes them deeper, 8 to 28 ft, and winter fish settle into 3 to 20 ft. Deep basin is the standout, a deep basin at roughly 28 ft, rated prime for summer brook trout. Time it for early morning and the evening. You won't need more than a small spoon fished deep or a trolled lake-clear wobbler + worm most summer days.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 15 ft | dawn & dusk | Shallow bay flat (4 ft) | Small inline spinner (gold), Tiny spoon |
| Été | 8 to 28 ft | dawn & dusk | Deep basin (28 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Automne | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Hiver | 3 to 20 ft | dawn | Shallow bay flat (4 ft) | Small jigging spoon, Tungsten jig + plastic |
Come spring, look for walleye tight to the bank in 4 to 15 ft. Expect a summer slide to 8 to 28 ft, then a winter hold in 8 to 28 ft. Start at Deep basin. It's a deep basin holding about 28 ft of water and rates prime come winter. Prime time lands in 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 | open water | 1/8 oz jig + minnow, Hair jig |
| Été | 8 to 28 ft | dusk & dawn | Deep basin (28 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Automne | 8 to 28 ft | dusk & night | Deep basin (28 ft) | Jigging rap, Jig + big minnow |
| Hiver | 8 to 28 ft | dusk & dawn | Deep basin (28 ft) | Jigging spoon + minnow head, Rattle bait |
Come spring, look for yellow perch tight to the bank in 3 to 12 ft. They move out to 8 to 28 ft in summer and finish the year down in 8 to 28 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 4 ft that scores prime in spring. Best bite is early morning. A drop-shot micro plastics or a small spoon tipped with worm is the honest summer answer here.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 12 ft | midday & dawn | Shallow bay flat (4 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Été | 8 to 28 ft | dawn | Deep basin (28 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Automne | 8 to 28 ft | midday | Deep basin (28 ft) | Jigging spoon (small), Perch rig / spreader |
| Hiver | 8 to 28 ft | midday & dawn | Deep basin (28 ft) | Tungsten jig + spikes, Rattle spoon (small) |
Start shallow in spring: northern pike sit in 2 to 8 ft that time of year. Warm water sends them out to 8 to 20 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Shallow bay flat, a weed flat in the 4 ft range, prime in spring. Fish it in early morning and the evening and you'll meet the bite. Throw a bucktail or a weedless spoon over cabbage until the fish tell you otherwise.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 8 ft | midday & dawn | Shallow bay flat (4 ft) | #5 inline spinner, Spoon (red/white) |
| Été | 8 to 20 ft | dawn & dusk | Shallow bay flat (4 ft) | Bucktail, Weedless spoon over cabbage |
| Automne | 6 to 18 ft | midday & dawn | Shallow bay flat (4 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Hiver | 5 to 15 ft | midday | Shallow bay flat (4 ft) | Tip-ups, Large jigging spoon |
Start shallow in spring: smallmouth bass sit in 3 to 12 ft that time of year. Warm water sends them out to 8 to 28 ft; cold water stacks them in 8 to 28 ft. Top water on the chart: Deep basin, a deep basin in the 28 ft range, good in winter. Fish it in early morning and the evening and you'll meet the bite. Throw a drop shot (goby/minnow) or a ned rig until the fish tell you otherwise.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 12 ft | dawn & dusk | open water | Ned rig, Tube jig |
| Été | 8 to 28 ft | dawn & dusk | open water | Drop shot (goby/minnow), Ned rig |
| Automne | 8 to 25 ft | midday & dawn | open water | Jerkbait, Blade bait |
| Hiver | 8 to 28 ft | midday | Deep basin (28 ft) | Blade bait, Hair jig |
Early season rock bass use the shallows, holding in 2 to 10 ft. Summer is a 5 to 20 ft game here, winter an 8 to 28 ft one. The chart's best answer is Deep basin — deep basin, 28 ft, prime for winter. Best bite is the evening. Tie on a ned rig (small) or a marabou jig and you're in the game.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 10 ft | midday & dawn | open water | 1/16 oz jig + grub, Small inline spinner |
| Été | 5 to 20 ft | dusk | open water | Ned rig (small), Marabou jig |
| Automne | 8 to 22 ft | midday | open water | Small tube jig, Inline spinner |
| Hiver | 8 to 28 ft | midday | Deep basin (28 ft) | Tungsten jig + plastic, Small spoon + spike |
Lac Berthier also holds 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). Pick any of them on the map above for rated spots and bait picks.
The chart marks 3 structure features on Lac Berthier; the deepest is Deep basin at about 28 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 Berthier specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac Berthier is about 28 ft (9 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Lac Berthier atteint environ 9 m (28 pi) à son point le plus profond. Les profondeurs proviennent de relevés bathymétriques réels.
Anglers target brook trout, walleye, yellow perch, northern pike, smallmouth bass, rock bass, crappie, pumpkinseed, brown bullhead, channel catfish on Lac Berthier. 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 28 ft of water that rates prime for walleye in winter. The map above holds the full rated-spot list for every 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 Berthier 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 Mondor 3 mi · Lac Noir 4 mi · Lac Corbeau 4 mi · Lac Maskinongé 5 mi · Lac du Rocher 8 mi · Lac Cloutier 10 mi · Lac Loyer 11 mi · Lac Hénault 11 mi · Lac Stevens 12 mi · Lac Pierre 12 mi · Lac des Français 12 mi · Lac Long 12 mi
See how Lac Berthier stacks up: best smallmouth bass lakes in Québec · best walleye lakes in Québec · best northern pike lakes in Québec · best crappie lakes in Québec
More water nearby: Matawinie MRC fishing maps (240 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.