Control Zones in Manitoba

A control zone is a watershed area where aquatic invasive species (AIS) already occurs or where it is expected to spread to in the future. Regulations require decontamination, in addition to general cleaning provisions (clean, drain, dry), to ensure AIS are killed and removed before watercraft and water-related equipment are placed into a different water body.

There are four control zones in Manitoba: Central, Whiteshell, Buffalo Bay and Winnipeg River.

Central Control Zone - established to control the spread of spiny water flea and zebra mussels.
It includes:

  • the portion of the Red River from the United States border to its entry into Lake Winnipeg
  • Lake Winnipeg
  • the Nelson River from Lake Winnipeg to Hudson Bay, including all lakes through which the Nelson River passes

Whiteshell Control Zone - established to control the spread of black algae.
It includes:

  • Betula Lake
  • Jessica Lake
  • White Lake
  • the downstream portion of Whiteshell River from Jessica Lake to Winnipeg River

Buffalo Bay Control Zone - established to control the spread of spiny water flea.
It includes:

  • the portion of Buffalo Bay in the Lake of the Woods located within Manitoba

Winnipeg River Control Zone - established to control the spread of spiny water flea.
It consists of:

  • portions of the Winnipeg River from the Ontario border to its entry into Lake Winnipeg
  • all the lakes through which the Winnipeg River passes 
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