Wertheim Lake in Thunder Bay District: How and When to Fish It

• Overview

  This water sits in Thunder Bay District, Ontario. It stands 391 metres above sea level. About 4.89 sq km, so local knowledge or a boat saves a lot of walking. Some 37 km of shoreline means conditions can differ from one end to the other. Size puts it in the front rank of our Thunder Bay District list. Sioux Lookout is the closest place, 112 km off. The nearest city of size is Thunder Bay, 272 km away. The nearest boundary is a fair way off.

• Where to Fish on Wertheim Lake

  Our records carry no depth, so judge it from the bank. A natural lake fishes on cover, and cover here means weed and timber. On a natural lake the weed line and the shelf beyond it do the work. Fish documented in Thunder Bay District include cisco, blackfin cisco, rainbow smelt, bloater and shortjaw cisco. Those are county-wide records, so not every one of them will be in this water. Read Wertheim Lake before you fish it and the day goes better.

• Seasonal Patterns

  Between January at about -21°C and July at about 17°C, the water has a wide range to work through. Seasons are distinct, and each one fishes differently. Count the season from break-up, usually early May. Open water usually runs from early May until about mid November. Right after break-up, and again as the nights sharpen, is when to go. Wertheim Lake runs to its own calendar within the local pattern.

• Tackle & Baits

  Our records carry no access rule either way. This is a natural basin, not a dammed one. No launch point is recorded nearby, so this is a bank water unless you carry a boat in. 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. Fishing rules and camping rules are set separately here. Failing this one, try De Lesseps Lake, 7.3 km away. Confirm access to Wertheim Lake locally before you travel.