Government of New Brunswick

An established Zebra Mussel population has been discovered in Lac Témiscouata, just across the border into Québec, which flows into New Brunswick’s Madawaska River and then the Saint John (Wolastoq) River. The situation is being monitored by respective government agencies and plans are being made to assess any spread beyond the lake.

While no populations have been detected in New Brunswick to date, we ask that anyone spending time in the Madawaska or Saint John (Wolastoq) River keep an eye out and report any suspected sightings. It is also important to be extra vigilant and Clean, Drain Dry your boat, trailer, and other recreational equipment any time you leave these waterbodies. 


The location of Lake Témiscouata, circled in red above.


  • Clean, Drain and Dry any recreational equipment (boats, canoes, kayaks, fishing gear, etc.) before entering a new body of water. Learn more on the Canadian Council on Invasive Species’ website and/or the New Brunswick Invasive Species Council (NBISC) website.

  • Learn how to identify zebra mussels

  • Report any sightings immediately to:

New Brunswick Invasive Species Council 
E-mail: [email protected] 
Phone: (506) 262-6247

Department of Fisheries and Oceans
E-mail: [email protected]

Department of Natural Resources and Energy Development
E-mail: [email protected]
Phone: (506) 453-3826 

Include the following information: 

– The exact location of the sighting (GPS coordinates) and date

– Identifying features and photos of the mussel(s)