Health advisory issued for Fernan Lake, upper end of Hayden Lake
Coeur d'Alene Press | UPDATED 9 hours, 35 minutes AGO
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August 7, 2026 12:35 PM
A joint public health advisory for Fernan Lake and the upper end of Hayden Lake has been issued by the Panhandle Health District, Idaho Department of Health & Welfare and Idaho Department of Environmental Quality.
Recent water sampling indicates the presence of cyanobacteria, also known as a harmful algae bloom or blue-green algae, in Fernan Lake and the north end of Hayden Lake.
The public should use precautions throughout both lakes, as HABs can spread and move with wind and water traffic.