where is torch lake in michigan?
Torch Lake Map Antrim County Michigan Fishing. Torch Lake, at 18 miles long , is Michigan's longest lake. Torch Lake also is Michigan's second largest lake covering over 29 square miles. Torch Lake, with an average depth of over 200 feet, is a fine habitat for trout. Downrigger fishing is the best way to go after the trout that stay in the cold depths most of the time. LENGTH : 18 mi.