Truly a unique destination campground and marina designed specifically for RVing and boating enthusiasts, as well as cottage vacationers. Our beautiful island is located in the scenic 1000 Islands Region, on the eastern shores of Lake Ontario in northern New York State, in the quaint town of Henderson Harbor. We have 300 RV Sites with over 70 RV sites right on the water, a limited number of new Tent sites, a gorgeous Marina and Boat Launch, and 5 beautiful Lake-front Sunset Cottages. When you drive over our bridge and cross a 1300 feet-long causeway, you’ll know you are somewhere truly special! The campground is situated on an island with 65 acres, a well-protected marina, picturesque shoreline, breath-taking lake views, and spectacular sunsets. Our island enjoys a refreshing breeze throughout the summer, for cooling off as you just relax “away from it all” or for great sailing. In its rich history, Association Island hosted numerous sailing & wind-surfing contests and was once the training center for the US Olympic Sailing Team as they prepared for the 1976 Montreal Olympics.