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182-acre lake near Québec. The lake tops out around 30 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 is how the season plays out for each species, straight from the data behind the map.
The outline encloses 182 acres, worked by 4.2 miles of shoreline. A development index of 2.2 means a maze of bays and points: far more casting targets than a round bowl of the same size. About 75% of the surface sits shallower than 15 ft — that's the weed-and-bait zone. Figure 2 mi of water from one end to the other, 0.3 mi at the beam. It sits in La Jacques-Cartier MRC. If the bite dies, Lac Peggy is 1 mi to the north.
Carte de pêche interactive gratuite — Lac Henri-Mercier, Québec : courbes de profondeur issues de relevés bathymétriques réels jusqu'à 9 m (30 pi), et les meilleurs sites pour omble de fontaine et perchaude. 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. Expect a summer slide to 10 to 30 ft, then a winter hold in 3 to 20 ft. Put Deep basin first on the milk run — a deep basin near 29 ft that grades prime for summer. In summer the feeding windows fall in 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 | Main-lake point (11 ft) | Small inline spinner (gold), Tiny spoon |
| Été | 10 to 30 ft | dawn & dusk | Deep basin (29 ft) | Small spoon fished deep, Trolled lake-clear wobbler + worm |
| Automne | 2 to 15 ft | midday & dawn | Main-lake point (11 ft) | Small spoon (orange), Spinner |
| Hiver | 3 to 20 ft | dawn | Shallow bay flat (4 ft) | Small jigging spoon, Tungsten jig + plastic |
The spring pattern is a shallow one: yellow perch in 3 to 12 ft. Midsummer fish sit out in 10 to 30 ft before dropping to 9 to 30 ft for winter. The spot to know is Shallow bay flat, a weed flat in about 4 ft of water that rates prime for yellow perch in spring. Plan around early morning in the warm months. 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 | Shallow bay flat (4 ft) | Small jig + curly tail, Perch-pattern micro crank |
| Été | 10 to 30 ft | dawn | Deep basin (29 ft) | Drop-shot micro plastics, Small spoon tipped with worm |
| Automne | 9 to 30 ft | midday | Deep basin (29 ft) | Jigging spoon (small), Perch rig / spreader |
| Hiver | 9 to 30 ft | midday & dawn | Deep basin (29 ft) | Tungsten jig + spikes, Rattle spoon (small) |
The chart marks 6 structure features on Lac Henri-Mercier; the deepest is Deep basin at about 29 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 Henri-Mercier specifically, so confirm the current rules before you fish.
Check the official Québec fishing regulations →
Lac Henri-Mercier is about 30 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 Henri-Mercier atteint environ 9 m (30 pi) à son point le plus profond. Les profondeurs proviennent de relevés bathymétriques réels.
Anglers target brook trout, yellow perch on Lac Henri-Mercier. 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.
Shallow bay flat is the top-rated area: a weed flat in about 4 ft of water that rates prime for yellow perch in spring. 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 Henri-Mercier 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 Peggy 1 mi · Lac Maguire 2 mi · Lac Bourette 2 mi · Lac Charles-Savary 4 mi · Lac de la Bouteille 5 mi · Lac F.-X.-Lemieux 5 mi · Lac Beaulieu 6 mi · Lac des Mâles 6 mi · Lac aux Rognons 7 mi · Petit lac Jacques-Cartier 7 mi · Lac Judas 8 mi · Lac Lonion 8 mi
See how Lac Henri-Mercier stacks up: best yellow perch lakes in Québec · best brook trout lakes in Québec
More water nearby: La Jacques-Cartier MRC fishing maps (43 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.