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Castle Rock Lake encompasses approxomatly 16,600 acres with a maximum depth of 32 feet. The lake was formed in 1951 when the gates on the newly completed dam were closed. Castle Rock Lake is an impoundment of the Wisconsin River, or more commonly referred to as a flowage. Castle Rock Lake has an abundant population of walleye, white bass, perch and crappies, as well as good numbers of large mouth and small mouth bass, northern pike, musky.
Castle Rock Lake is located 30 minutes north of Wisconsin Dells and is bordered by Adams County on the east and Juneau County on the west. Numerous motels are adjacent to the lake as well as county and state parks, with camping sites available. Northern Bay Resort is located on the Adams County side and considered one of the finest family destinations, offering boating, swimming, golf, and more.