Invasive Species



All Alberta lakes including Lac Ste Anne and Lake Isle are threatened by invasive species. These are non-native species that grow along the shorelines and aquatic species that live in the water.


They significantly can negatively impact lakes by:


  • Reducing the diversity or abundance of native species or the ecological stability of the lake environment

  • Impeding use of the lake for recreational, agricultural, or commercial activities dependent on water


The most concerning invasive species at present are: Quagga and Zebra mussels.  They move from lake to lake by attaching themselves to boats and other recreational equipment.  Currently, neither are present in Lake Isle or Lac Ste Anne.  If you think you have spotted a Quagga or Zebra mussel, please report it to Alberta’s invasive species hotline at 1 855 336 BOAT (2628)



Quagga Mussels

Zebra Mussels


Boaters can prevent the spread of invasive species by making sure you always:


Clean, Drain and Dry Your Boat!


For More information please visit ESRD's Invasive Species Website