Located in Hayward, Grindstone is one of the area’s finest, offering any type of recreational activity. A big, wide, oval shape provides a lot of water for big views. 3,111 acres in size and 60 feet deep. Grindstone is also one of the area’s top fishing destinations. Great populations of Muskie and Northern Pike. Also present are Walleye, Large and Smallmouth Bass, as well as Crappie and Bluegill. Overall, a wonderful lake! Feel free to leave your comments here.