Round Lake (McHenry) Moderate numbers of pike and walleye. Abundant but mostly small yellow perch. All Features General Information Sportfish Available: Yellow Perch, Walleye, Northern Pike, Acres: 737, Shoreline Miles: 4.6, Max Depth: 52.6 Locate 48.033528, -100.2777 Round Lake (McHenry) Open in MapsOpen in Maps