Mazinaw Lake, located along the upper reaches of the Mississippi River in Bon Echo Provincial Park, is one of the deepest inland lakes in Ontario, a popular destination for lake trout, walleye, bass, musky, whitefish and pike. One of the best spots to fish for lake trout is offshore from Mazinaw Rock, where the water is about 300 feet deep. The lake's name is an Algonquin word describing the pictographs along this rock.
Here is a report from Mazinaw posted online by Angler's Atlas user adleach11: "(Mazinaw) is an oligotropic lake, so there are plenty of exposed rock outcrops and boulder fields, as well as hard or rocky bottoms. The lake is not busy during shoulder season and usually has little boat traffic, with the exception of the peak periods during summer. Boat traffic will affect fish activity. Target lake trout [in Mazinaw] during the spring in shallow water. A down rigger or weighted fishing line are best for trolling. Flatline trolling is fine when fish are active in shallow areas."
"The lake has two sections, upper and lower. Lower Mazinaw is shallower. Most of the fishing action is close to shore in 10-50 feet of water. Look for structure or for suspended fish actively feeding on baitfish. The area on both sides of the narrows entering lower Mazinaw receives the most fishing pressure. Walleye, pike and smallmouth bass are taken here."
Located in the townships of North Frontenac and Addington highlands in the Land O' Lakes Region, Mazinaw is about a three-hour drive from Toronto. Take Highway 401 east to Bellville, then Highway 37 north. Turn east when the highway intersects with Highway 7. From Kaladar, take Highway 41 north.