If you're not on the water, you're not on vacation!

Castle Rock Lake is Wisconsin's fourth largest freshwater lake, measuring 16,500 square acres. A flowage of the Wisconsin River, this body of water is home to a wide variety of fish, including Bluegill, Lake Sturgeon, Largemouth and Smallmouth Bass, Northern Pike, and Walleye.

Bring your boat to Northern Bay and sail away. Take advantage of our marina with more than 50 boat slips. Water ski, tube or cast a line. Castle Rock Lake and the beautiful land at Northern Bay awaits you.