Isis Lake Fishing near Longlac, Ontario

• Overview

  Isis Lake lies in Thunder Bay District, in Ontario. The surface lies 320 metres up. It runs to roughly 13 hectares — big enough to hold fish away from the bank, small enough to learn. A shoreline of some 2.0 km keeps the choices simple. It is one of the smaller waters we list in Thunder Bay District. Longlac sits 8 km from the bank. It is 252 km to Thunder Bay, the nearest city. The nearest edge is a long way off, so local rules apply throughout.

• Where to Fish on Isis Lake

  No published figure covers depth, so learn it as you fish. 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. Survey and observation records for Thunder Bay District include cisco, blackfin cisco, rainbow smelt, bloater and shortjaw cisco. It is the county picture; the agency list is water-specific. Fish Isis Lake to its features, not to its size.

• Seasonal Patterns

  Long-term averages put July at about 16°C and January near -20°C. Cold dominates the year and the fishing works around it. Once it clears, about early May, the fishing comes on quickly. On the long-run averages the water opens up around early May and starts locking again about mid November. Look to early summer and the first cool weeks of autumn. Plan around that when you fish Isis Lake.

• Tackle & Baits

  Public data does not answer the access question here. It formed naturally, so levels move with rainfall rather than with a gate. Public mapping records no formal access here, so plan for a walk and soft ground. Keep the gear simple: light line, small hooks, split shot and a couple of proven lures. Where access is informal, keep it that way by behaving. Some ground is open by custom rather than by right, so tread carefully. Should this one be busy, Noel Lake is 5.5 km off. Signs at Isis Lake carry more weight than any list.