The American Canoe Association (ACA) is the oldest and largest paddle sports organization in the United States, promoting canoeing, kayaking, and rafting. The ACA sponsors more than seven hundred events each year, along with safety education, instructor certification, waterway conservation and public information campaigns. There are more than four thousand ACA certified canoe and kayak instructors. More than two hundred local paddling clubs and fifty thousand individuals are members. The Association publishes the bi-monthly Paddler Magazine.