All water bodies closed in B.C.'s Kootenay and Yoho national parks to slow spread of fish parasite
The threat of invasive species has also prompted Parks Canada to restrict watercraft in Alberta's Waterton Lakes National Park.
![All water bodies closed in B.C.'s Kootenay and Yoho national parks to slow spread of fish parasite](https://i.cbc.ca/1.3930753.1705714461!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_620/emerald-lake.jpg)
![A canoeist paddles across Emerald Lake, which is open year-round, in B.C.'s Yoho National Park roughly 175 km northwest of Calgary. A canoe on a lake with mountains in the background.](https://i.cbc.ca/1.3930753.1705714461!/fileImage/httpImage/image.jpg_gen/derivatives/16x9_620/emerald-lake.jpg)
The threat of invasive species has also prompted Parks Canada to restrict watercraft in Alberta's Waterton Lakes National Park.