Fishing Lac William in Mauricie, Quebec

• Overview

  You will find Lac William in Mauricie, Quebec. Elevation runs to 303 metres. Small at around 4 hectares: two anglers spread out cover most of it. Our Mauricie list holds plenty of bigger water. Hérouxville is the closest town at 32 km. For a city, Trois-Rivières is 64 km off. The county line is nowhere near, so one local authority covers the water.

• Where to Fish on Lac William

  Nothing in our records gives a depth for this one. Look for the band where the shallows give up and the bottom falls away. This is a lake, so the margins and the first drop matter most. Reported across Mauricie: northern pike, brook trout, walleye and yellow perch. It is the county picture; the agency list is water-specific. The near bank of Lac William is often the one people ignore.

• Seasonal Patterns

  In an average year July sits at 18°C and January at -14°C. The year runs cold to warm and back, with clear transitions. After late April the shallows warm and the fish move up. On average, late April opens the water and late November closes it again. The first weeks of open water and the last are the ones to plan for. Plan any trip to Lac William around it.

• Tackle & Baits

  Whether the bank is open is not something our records settle. Nothing in the way of made access shows up nearby: no ramp, no car park, no path. A small crankbait along the drop and a worm in the thick stuff cover the bass. Gates get locked out of season on water like this. Check whether bait restrictions apply before you buy any. For a change of water, Lac du Sud-Est is 0.7 km distant. Check the current arrangement for Lac William.