Thirteen Island Lake Fishing in Frontenac County, Ontario

• Overview

  Look for Thirteen Island Lake in the Frontenac County part of Ontario. Land around it is lake country bush. This is sizeable water at about 1.96 sq km, and a boat opens up most of it. The perimeter runs near 19 km, so plan the walk before you start. It ranks high for size among our Frontenac County listings. Sharpton/Glenvale is the closest town at 24 km. The nearest city of size is Kingston, 36 km away. This one is safely inside the county line.

• Where to Fish on Thirteen Island Lake

  No published figure covers depth, so learn it as you fish. Bays and points beat straight shoreline every time on water like this. Still water like this holds fish on the edges rather than out in the open. Records held for Frontenac County cover pumpkinseed, bluegill and rock bass. Records at county level tell you what is around, not what is stocked here. The near bank of Thirteen Island Lake is often the one people ignore.

• Seasonal Patterns

  On the long-term average, July reads 20°C and January reads -9°C. Winter closes the water for a while, and the reopening is worth catching. Look for the thaw near mid April; the fishing lifts straight after. Break-up sits around mid April on average, with the water closing again about early December. Right after break-up, and again as the nights sharpen, is when to go. Thirteen Island Lake fishes to that pattern most years.

• Tackle & Baits

  The access position is unclear from public sources. Records list it as a natural water body rather than an impoundment. We find no slipway, car park or made path within a short radius, so treat access as rough. Largemouth respond to soft plastics tight to cover; go weedless where the growth is heavy. Parking is often the real limit rather than the bank itself. Fishing rules and camping rules are set separately here. The nearest alternative is Desert Lake, 2.6 km out. Ask locally about Thirteen Island Lake if anything is unclear.