This 3,100-acre lake, with depths of 60 feet, is bordered by beautiful hardwoods, majestic pines, and sand beaches. Making one large 3,000 acre loop through hardwoods and much pines, and bordered by magnificent beaches, Grindstone Lake contains plenty of walleye, musky, pike, bass, and panfish, and is one of the area’s favorite vacation spots and fishing lakes. Grindstone Lake is located 7 miles southeast of Hayward on Hwy K.