Shoal Marker Watchers

Thousand Islands Association (TIA) needs your help! 

TIA is a not-for-profit, volunteer run organization that was founded in 1934. We are funded through annual memberships, business sponsorships, donations and grant monies.

TIA’s most recognizable program is the placement, seasonal maintenance and removal of nearly 200 shoal markers each season between the eastern tip of Howe Island and Brockville. We also supply the funding for an additional 100 markers that are placed by Save The River each season.

As part of our Community Watch Program, we are looking for volunteers to join us as Shoal Marker Watchers. From time to time and for a variety of reasons our shoal markers break loose and float away. Our hope is that our Shoal Marker Watchers will notice this sooner rather than later and quickly inform TIA of missing or found markers. “If you don’t see something, say something.”

If you would like to help out and become part of this new initiative, please email us at with your contact info and general location.

Why Your Membership Matters

TIA is the only organization placing shoal markers for the River Community - this is an essential service. Our mission of river safety is to heighten boater’s awareness of some dangerous shoals to avoid . TIA strongly encourages all boaters to use navigation charts when navigating the St. Lawrence River. Please be a TIA supporter, we rely on membership dues & donations to be sustainable.

Connect with TIA on social media and be part of our river community.