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Health advisory: Harmful algal blooms observed on Black Lake

| September 22, 2025 12:00 PM

The appearance of cyanobacteria, also known as a harmful algal bloom has caused a public health advisory to be issued for Black Lake. 

Panhandle Health District in collaboration with the Coeur d’Alene Tribe, Idaho Department of Health and Welfare and Idaho Department of Environmental Quality reported that Tribal biologists noted HABs in field observations and water sample analysis.

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