Oregon health officials issued a recreational use advisory for Odell Lake after water samples found cyanotoxins above safe recreation levels. Visitors should avoid swimming and other activities that could lead to swallowing or inhaling water near visible algae blooms.

Oregon Health Authority has issued a recreational use advisory for Upper Klamath National Wildlife Refuge after cyanotoxins were detected above recreational use values. Visitors are urged to avoid swimming, high-speed boating and water spray in areas where blooms are present.