O'Brien Lake Fishing Guide, Sudbury, Ontario

• Overview

  The Sudbury end of Ontario holds O'Brien Lake. The bank is 269 metres above sea level. Roughly 1.35 sq km of surface: treat each bay as a water in its own right. With 9.1 km or so of shoreline, boat anglers cover ground the bank cannot. It ranks high for size among our Sudbury listings. Espanola lies 16 km from the water. Dowling follows at 41 km, then Little Current at 48 km. The nearest boundary is a fair way off.

• Where to Fish on O'Brien Lake

  Depth is not on record here, so the bank has to tell you. Bays and points beat straight shoreline every time on water like this. The shallow end warms first and pulls fish in ahead of the rest. Fish documented in Sudbury include smallmouth bass, northern pike, yellow perch and Iowa darter. The county list is broader than any single water. At O'Brien Lake light and wind decide more than tackle does.

• Seasonal Patterns

  Expect July near 18°C and January near -12°C on the long-run figures. Seasons are distinct, and each one fishes differently. Ice is part of the season here, ending near late April. On the long-run averages the water opens up around late April and starts locking again about late November. May into June fishes hardest, and September gives a second good stretch before the lid returns. On O'Brien Lake the same rules apply, with local timing.

• Tackle & Baits

  Public data does not answer the access question here. No dam controls it, and the level follows the season. Mapping is blank for access, so scout the approach before committing the car. Bass water: a Texas-rigged worm near cover, a spinnerbait when you need to cover ground. A landowner's word beats anything printed elsewhere. Keep proof of licence with you rather than in the car. Big Swan Lake at 2.4 km is the sensible second choice. Nothing here settles the position at O'Brien Lake for certain.