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 six control zones in Manitoba: Central, Nelson River, Whiteshell, Buffalo Bay, Winnipeg River and Saskatchewan River/Cedar Lake.

Central Control Zone - established to control the spread of spiny water flea and zebra mussels. It includes the Red River from the United States border to its entry in to Lake Winnipeg; Lake Winnipeg; the portion of the Winnipeg River from Pine Falls generating station to its entry into Lake Winnipeg; the portion of the Saskatchewan River from the Grand Rapids generating station to its entry into Lake Winnipeg; and the portion of each tributary that enters Lake Winnipeg and the Red River from the mouth up to the first impassible barrier.

Nelson River Control Zone - established to prevent the introduction and control the spread of zebra mussels. This control zone consists of the Nelson River from Lake Winnipeg to its entry into Hudson Bay, including all lakes, rivers, channels and other water bodies through which the Nelson River passes; Kiskitto Lake; Kiskittogisu Lake; Scatch Lake; Goose Hunting Lake; Cauchon Lake; Prud'homme Lake; Archibald Lake; Bruneau Lake; Bulger Lake; Walker Lake; Drunken Lake; Hill Lake; and the portion of each tributary that flows into any of these water bodies from the mouth up to the first impassible barrier. This zone prevents the introduction and controls the spread of zebra mussels.

Whiteshell Control Zone - established to control the spread of black algae. It includes Betula, Jessica, and White lakes; the downstream portion of the Whiteshell River from Jessica Lake to Betula Lake and portions of each tributary that enters these water bodies from the mouth up to the first impassable barrier.

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 that is located in Manitoba and the portion of all tributaries that flow into Buffalo Bay from the mouth to the first impassible barrier.

Winnipeg River Control Zone - established to control the spread of spiny water flea. It includes portions of the Winnipeg River from the Ontario border to the Pine Falls generating station and includes all the lakes, river and channels and other water bodies through which the Winnipeg River passes; and the portion of each tributary that flows into any of these water bodies from the mouth up to the first impassable barrier.

Saskatchewan River/Cedar Lake Control Zone - established to prevent the introduction and control the spread of zebra mussels. It consists of the portion of the Saskatchewan River from the Saskatchewan border to the Grand Rapids generating station, and all the lakes, river and channels and other water bodies through which that portion of the Saskatchewan River passes; Cedar Lake; South Moose Lake; North Moose Lake; East Moose Lake; Red Earth Lake; Driftwood Lake; Traders Lake; and portion of each tributary that flows into any of these wter bodies from the mouth up to the first impassible barrier.