Mary Lake Fishing near Lappe, Ontario

• Overview

  Look for Mary Lake in Thunder Bay District, Ontario. The water sits 428 metres up. Surface area is around 31 hectares, which gives you real water without needing a boat. The perimeter runs near 6.9 km, so plan the walk before you start. The nearest town is Lappe, 17 km away. It is 38 km to Thunder Bay, the nearest city. It sits well inside the county, so one set of rules covers it.

• Where to Fish on Mary Lake

  No depth figure has reached our records, which makes a plummet useful. A soft bed grows weed late into autumn, which keeps fish shallow. The shallow end warms first and pulls fish in ahead of the rest. Fish documented in Thunder Bay District include cisco, blackfin cisco, rainbow smelt, bloater and shortjaw cisco. The list covers the county rather than this water alone, so treat it as a guide. On Mary Lake the obvious spot is not always the productive one.

• Seasonal Patterns

  Temperature averages peak at 17°C in July and bottom out at -18°C in January. This is a two-season water: locked, then wide open. After early May the shallows warm and the fish move up. The water is typically free of ice between early May and mid November. Look to early summer and the first cool weeks of autumn. The season on Mary Lake rarely departs from it.

• Tackle & Baits

  Public sources are silent on who controls the bank. This is a natural basin, not a dammed one. There is no mapped parking or launch nearby, which keeps numbers down. Keep the gear simple: light line, small hooks, split shot and a couple of proven lures. Local rules can differ across the county line, so check where you stand. A polite question at the farm gate opens more banks than anything else. Should this one be busy, MacCormack Lake is 4.8 km off. For Mary Lake, the notice at the access point is the final word.