Lake Carlos is part of the Alexandria Chain of Lakes. It is a 2,520-acre basin located about 4 miles north of Alexandria. Lake Carlos is the largest and deepest lake within the Alexandria Chain of Lakes with a maximum depth of 163 feet. This lake is very popular among boaters and anglers. Fishing is very good for northern pike, largemouth bass, walleye, bluegill and crappie. Other fish include rock bass, perch, bullhead and some other species of fish.