Theriault Lake, Ontario: Fishing Spots and Seasons

• Overview

  Theriault Lake is one of the Sudbury waters in Ontario. It stands 263 metres above sea level. Around 85 hectares of surface means several distinct areas to work. There is roughly 5.6 km of bank, more than one visit can cover properly. Markstay-Warren is the closest place, 27 km off. West Nipissing lies 44 km off, Sturgeon Falls another 45 km. It lies deep inside the county rather than near an edge.

• Where to Fish on Theriault Lake

  Depth is unmeasured here, so let the shoreline guide you. Bays and points beat straight shoreline every time on water like this. Weed, then depth: that is the order to fish a water of this kind. Reported across Sudbury: smallmouth bass, northern pike, yellow perch and Iowa darter. Records at county level tell you what is around, not what is stocked here. Treat Theriault Lake as a water to read rather than to cover.

• Seasonal Patterns

  Long-run averages give July about 18°C and January about -14°C. Winter closes the water for a while, and the reopening is worth catching. After late April the shallows warm and the fish move up. The season between ice runs from about late April to late November. September and October fish steadily right up to the freeze. Keep it in mind when planning a trip to Theriault Lake.

• Tackle & Baits

  Whether the bank is open is not something our records settle. No dam controls it, and the level follows the season. Nothing in the way of made access shows up nearby: no ramp, no car park, no path. Bass water: a Texas-rigged worm near cover, a spinnerbait when you need to cover ground. Provincial rules still apply whatever the bank status. Where tickets apply, they are sold in the nearest town rather than on the bank. Failing this one, try Sargesson Lake, 1.8 km away. Confirm access to Theriault Lake locally before you travel.