Boulder Yacht Club is a nonprofit sailing organization comprised of sailors/boaters who call Boulder Marina home(port). Brought together by our love for time spent on the water, we are the only yacht club on the eastern shore of Carlyle Lake, the largest man-made lake in Illinois. Our members enjoy sailing, motoring, kayaking, paddle-boarding, watching sunsets, and spending time with our marina family. For more information on how to become a member, please see the membership tab.