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Algae bloom observed at Placid Lake


October 15, 2020

Emily McGuirt, Clearwater Resource Council

A blue-green algae bloom was observed at Placid Lake south of the public boat launch last week. The public is advised to stay out of the lake until the bloom dissipates. If toxins are present, they can exist in the water for up to two weeks after the bloom is no longer visible.

PLACID LAKE - Clearwater Resource Council reported another algae bloom just south of the public boat launch at Placid Lake State Park. The bloom was observed Wednesday, Oct. 7. Samples were sent to the Flathead Lake Biological Station. They confirmed Monday that it was blue-green algae.

While most blue-green algae blooms do not produce toxins, it is not possible to determine the presence of toxins without testing. All blooms should be considered potentially toxic. Very small exposures, such as a few mouthfuls of algae-contaminated water, may result in fatal poisoning.

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