The Thousand Islands Association (TIA) is a non-profit organization made up of approximately 1500 sailors, power boaters, and cottage owners. Founded in 1934, the organization's membership is roughly half Canadian and half American, with a common interest in keeping the St. Lawrence River a safe and beautiful area.

     One of the most visible functions carried out by TIA is helping boaters avoid many of the dangerous shoals which populate the St. Lawrence River.  Nearly 200 shoal markers are placed every spring on the U.S. side between the foot of Howe Island and Brockville. These markers warn boaters and many of the shoals which are located in the more heavily traveled channels. They are bought, maintained, and placed at TIA's expense on the Canadian side of the River and in cooperation with Save the River on the U.S. side. Much of the work is done by volunteers and all of the expenses are covered by dues and contributions.    

    Members of TIA are also kept advised about other timely topics.

    Individual memberships are $30; Family memberships are $75; Business memberships are $75; Lifetime memberships are $500.

Members will receive a boat decal and newsletter with membership.