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08/20/2025 11:28:08 am

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Microcystis aeruginosa

Microcystis aeruginosa

Oregon Health Officials: Willamette River is Off-Limits Due to Toxic Algae Contamination

Health officials in Oregon issued a cautionary health advisory Friday afternoon after confirming the toxicity of blue-green algae found in the Willamette River, advising all residents and visitors to stay away.

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