Castle Rock Lake is the fourth largest inland lake in the state. The lake covers sixteen thousand acres, and has approximately sixty miles of shoreline. The majority of shoreline is undeveloped making the lake "less populated" and ideal for boating and skiing. The lake's depth varies from 8 to 20 feet in most places, with area in the old river beds reaching as deep as30 feet. The structure created from the river beds makes Castle Rock a very productive and consistent fishing lake. The shores of Castle Rock Lake are dotted with public launch sites, and visitors can enjoy water skiing, swimming, sailing, and boating on its beautiful blue waters. Spectacular sunsets await along the many miles of wooded shoreline where 25,000 acres remain in their natural state.