PORTLAND, Ore.— Oregon Health Authority (OHA) issued a recreational use health advisory today for the southern portion of Upper Klamath Lake, from Howards Bay south to the Link River Dam, due to the presence of a cyanobacteria bloom and cyanotoxins above recreational use values for human exposure. The lake is in Klamath County. People should avoid swimming and high-speed water activities, such as water skiing or power boating, in areas of the lake where blooms are, as the major route of exposure is ingestion of water. Toxins are not absorbed through the skin. However, those with skin sensitivities may get a puffy red rash. OHA encourages people to visit Upper Klamath Lake and enjoy activities such as fishing, camping, hiking, biking, picnicking, bird watching, canoeing, and kayaking. Boating is safe as long as speeds do not create excessive water spray. Sprays could lead to the risk of inhaling cyanotoxins.
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