Big McDonald Lake is a 935 acre mesotrophic (moderately fertile) lake located in north central Otter Tail County approximately 9 miles west of Perham, MN. Big McDonald Lake is connected to Schwartz Lake during high water years by a channel located along the southeast shoreline. An unnavigable outlet is located along the south shoreline of the lake and connects Big McDonald Lake with Round Lake. The maximum depth of Big McDonald Lake is 46 feet and 39 percent of the lake is less than 15 feet deep. Walleye, northern pike and largemouth bass are the primary game fish in this lake. Panfish include bluegill, crappie, rock bass and perch.
MN DNR Lake Information Report
