The Capital Regional District has expanded the blue-green bloom warning to now include Elk Lake.
The bloom warning was previously limited to Beaver Lake in Elk/Beaver Lake Regional Park.
Visitors are advised to avoid contact with blue green algae and to keep animals on a leash to prevent them from drinking or swimming in the lake until the advisory has been lifted.
The blue-green toxins may cause a range of symptoms, including headaches and abdominal pain in humans, and can lead to lethal liver damage in dogs.