Shoal Marker Custodian Program

The Thousand Islands Association (TIA) needs your help! 

TIA is  a non-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 and removal of nearly 200 shoal markers each season between the eastern tip of Howe Island and the eastern tip of Grenadier Island. 

We are currently looking for volunteers to join our newly formed Shoal Marker Custodian Program.  Our objective is to create a group of 10 or more people who love the river as much as we do and who are willing to keep a close eye on a specific area of the river.  We are looking for help throughout our entire shoal marking territory.

From time to time, and for a variety of reasons, our shoal markers do break loose and float away. Our hope is that our Shoal Marker Custodians will notice this sooner than later and quicky inform TIA of the missing marker.  Our commitment to river safety runs deep and we feel that by encouraging and supporting this new program, our response time to missing markers will be greatly improved.

If you would like to help out and become part of this new initiative, please email our River Safety Chair, Mike Spies 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.