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10-acre lake near Québec. The lake tops out around 15 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:
Lac Boriau maps at 10 acres behind 0.7 miles of shoreline. With a 1.7 development index there's bank structure worth casting at, in moderation. Tip to tip the water measures near 0.4 mi. Matawinie MRC claims this one. Its nearest charted neighbour, Lac du Bois Franc, is 1 mi to the northwest.
Carte de pêche interactive gratuite — Lac Boriau, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 5 m (15 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.
Early season brook trout use the shallows, holding in 2 to 15 ft. Even in summer they hold at 5 to 15 ft; winter keeps them in 2 to 15 ft. The chart's best answer is Deep basin — deep basin, 14 ft, prime for summer. Best bite is early morning and the evening. Tie on a small spoon fished deep or a trolled lake-clear wobbler + worm and you're in the game.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 15 ft | dawn & dusk | Shallow bay flat (2 ft) | Small inline spinner (gold), Tiny spoon |
| Été | 5 to 15 ft | dawn & dusk | Deep basin (14 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Automne | 2 to 15 ft | midday & dawn | open water | Small spoon (orange), Spinner |
| Hiver | 2 to 15 ft | dawn | Deep basin (14 ft) | Small jigging spoon, Tungsten jig + plastic |
In spring, walleye run shallow here, mostly 4 to 15 ft. Summer keeps them at 5 to 15 ft, and they winter in 5 to 15 ft. Deep basin is the standout, a deep basin at roughly 14 ft, rated prime for winter walleye. Time it for the evening and early morning. You won't need more than a crawler harness on bottom bouncer or a deep crankbait (trolled) most summer days.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 4 to 15 ft | dusk & dawn | open water | 1/8 oz jig + minnow, Hair jig |
| Été | 5 to 15 ft | dusk & dawn | Deep basin (14 ft) | Crawler harness on bottom bouncer, Deep crankbait (trolled) |
| Automne | 5 to 15 ft | dusk & night | Deep basin (14 ft) | Jigging rap, Jig + big minnow |
| Hiver | 5 to 15 ft | dusk & dawn | Deep basin (14 ft) | Jigging spoon + minnow head, Rattle bait |
The spring pattern is a shallow one: yellow perch in 3 to 12 ft. As the season builds they drop to 5 to 15 ft, wintering in 5 to 15 ft. Top water on the chart: Back-bay flat, a weed flat in the 5 ft range, prime in spring. Time it for early morning. Summer baits: a drop-shot micro plastics or a small spoon tipped with worm gets it done.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 12 ft | midday & dawn | Back-bay flat (5 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Été | 5 to 15 ft | dawn | Deep basin (14 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Automne | 5 to 15 ft | midday | Deep basin (14 ft) | Jigging spoon (small), Perch rig / spreader |
| Hiver | 5 to 15 ft | midday & dawn | Deep basin (14 ft) | Tungsten jig + spikes, Rattle spoon (small) |
When the water first warms, northern pike slide up into 2 to 8 ft. By summer they slide out to 5 to 15 ft, and by winter most fish are in 5 to 15 ft. If you only fish one area, make it Shallow bay flat: a weed flat around 2 ft that scores prime in spring. In summer the feeding windows fall in early morning and the evening. Keep a bucktail or a weedless spoon over cabbage rigged through the warm months.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 2 to 8 ft | midday & dawn | Shallow bay flat (2 ft) | #5 inline spinner, Spoon (red/white) |
| Été | 5 to 15 ft | dawn & dusk | Back-bay flat (5 ft) | Bucktail, Weedless spoon over cabbage |
| Automne | 5 to 15 ft | midday & dawn | Back-bay flat (5 ft) | Big rubber (Bull Dawg style), Husky-style jerkbait |
| Hiver | 5 to 15 ft | midday | Back-bay flat (5 ft) | Tip-ups, Large jigging spoon |
When the water first warms, smallmouth bass slide up into 3 to 12 ft. By summer they slide out to 5 to 15 ft, and by winter most fish are in 5 to 15 ft. If you only fish one area, make it Deep basin: a deep basin around 14 ft that scores good in winter. In summer the feeding windows fall in early morning and the evening. Keep a drop shot (goby/minnow) or a ned rig rigged through the warm months.
| Saison | Profondeur | Meilleure fenêtre | Commencer à | Leurres |
|---|---|---|---|---|
| Printemps | 3 to 12 ft | dawn & dusk | open water | Ned rig, Tube jig |
| Été | 5 to 15 ft | dawn & dusk | open water | Drop shot (goby/minnow), Ned rig |
| Automne | 5 to 15 ft | midday & dawn | open water | Jerkbait, Blade bait |
| Hiver | 5 to 15 ft | midday | Deep basin (14 ft) | Blade bait, Hair jig |
Start shallow in spring: rock bass sit in 2 to 10 ft that time of year. Warm water sends them out to 4 to 15 ft; cold water stacks them in 5 to 15 ft. Top water on the chart: Deep basin, a deep basin in the 14 ft range, prime in winter. Fish it in the evening and you'll meet the bite. Throw a ned rig (small) or a marabou jig until the fish tell you otherwise.
| 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 | 4 to 15 ft | dusk | open water | Ned rig (small), Marabou jig |
| Automne | 5 to 15 ft | midday | open water | Small tube jig, Inline spinner |
| Hiver | 5 to 15 ft | midday | Deep basin (14 ft) | Tungsten jig + plastic, Small spoon + spike |
Lac Boriau also holds pumpkinseed (2 to 10 ft in summer), brown bullhead (3 to 12 ft in summer). Pick any of them on the map above for rated spots and bait picks.
Structure-wise the chart holds 3 features, led in depth by Deep basin at roughly 14 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 Boriau specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac Boriau is about 15 ft (5 m) deep at its deepest point. The depth chart here comes from real state fisheries GPS surveys, so the contours reflect measured depths.
Lac Boriau atteint environ 5 m (15 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, pumpkinseed, brown bullhead on Lac Boriau. 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 14 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 Boriau 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 du Bois Franc 1 mi · Lac aux Rats 1 mi · Lac Elbow 1 mi · Lac Lajoie 2 mi · Lac Herman 2 mi · Lac du Rocher Blanc 2 mi · Lac de la Truite Rouge 3 mi · Lac Trap 3 mi · Lac Philémon 3 mi · Lac Provost 4 mi · Lac Buck 4 mi · Lac Hervé 4 mi
See how Lac Boriau stacks up: best smallmouth bass lakes in Québec · best walleye lakes in Québec · best northern pike lakes in Québec · best yellow perch 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.