Fishing Lac du Grand Detour in Saguenay/Lac-Saint-Jean, Quebec

• Overview

  Lac du Grand Detour is one of the Saguenay/Lac-Saint-Jean waters in Quebec. Elevation runs to 410 metres. About 4.35 sq km, so local knowledge or a boat saves a lot of walking. The edge covers about 19 km, enough to hold several distinct areas. Few waters listed in Saguenay/Lac-Saint-Jean are bigger. The closest town, Labrecque, is 162 km away. After that come Saint-Honoré at 164 km and Pont Rouge at 165 km. No border sits close enough to matter.

• Where to Fish on Lac du Grand Detour

  No chart reached our records; the first cast is your sounding. The shallow end warms first and pulls fish in ahead of the rest. A soft bed grows weed late into autumn, which keeps fish shallow. Fish documented in Saguenay/Lac-Saint-Jean include northern pike, Atlantic salmon, lake whitefish and fallfish. Some of the species recorded here are protected or tightly regulated, so check what may be targeted before you fish. The shape of Lac du Grand Detour decides where the fish sit.

• Seasonal Patterns

  July is the warm end of the year here, averaging about 16°C, while January sits near -20°C. Ice holds for a long stretch, so the open weeks matter more here than further south. The lid usually sets by midwinter and gives way around early May. Climate figures give an open season running early May to mid November. The shoulder weeks of the open season are the productive ones. At Lac du Grand Detour the season follows that pattern closely.

• Tackle & Baits

  Our records carry no access rule either way. This is a natural basin, not a dammed one. No car park, ramp or path is recorded within easy reach of the shore. A wire trace and a big bright lure handle the pike; deep water asks for a heavier spoon. Parking is often the real limit rather than the bank itself. Some ground is open by custom rather than by right, so tread carefully. Lac Patrick at 4.3 km is the sensible second choice. Nothing on Lac du Grand Detour should be assumed from this page alone.