Sperm Lake Fishing in Thunder Bay District, Ontario

• Overview

  Sperm Lake lies in Thunder Bay District, in Ontario. The bank is 355 metres above sea level. With some 10 hectares of water, there is room for a boat but no need of one. With about 2.0 km of edge, you can try several depths in one session. It is a small entry by Thunder Bay District standards. Some 27 km away sits Geraldton, the nearest settlement. The nearest city of size is Thunder Bay, 226 km away. There is no boundary nearby to worry about.

• Where to Fish on Sperm Lake

  Depth is unknown to us, and the shoreline is the better guide. Still water like this holds fish on the edges rather than out in the open. This is a lake, so the margins and the first drop matter most. Public occurrence data for Thunder Bay District names cisco, blackfin cisco, rainbow smelt and bloater. Species recorded across the county may be limited to a few waters. Anyone new to Sperm Lake should walk it once before setting up.

• Seasonal Patterns

  Temperature averages peak at 16°C in July and bottom out at -19°C in January. The ice season is long here and the open one short. The lid usually sets by midwinter and gives way around early May. Going by climate averages, expect open water from about early May until roughly mid November. Reckon on open water from spring through to late autumn, with May and June the strongest. It holds true on Sperm Lake more years than not.

• Tackle & Baits

  We have no record of the rules that apply on this bank. No dam controls it, and the level follows the season. Nothing built is recorded close to the bank here. One rod, a handful of hooks and floats, and a few small lures are enough for this water. Ask in the nearest town if you are unsure. Some stretches are reserved and marked as such on the ground. The nearest alternative is Making Ground Lake, 2.5 km out. Treat access at Sperm Lake as something to verify.