Tag Archives: blue-green algae

Blue-green algae-related toxin warnings remain at Russian River beaches 

Mary Callahan, THE PRESS DEMOCRAT

The Russian River tested clean this week for a toxin related to blue-green algae that prompted cautionary signs at 10 popular beaches last month and in each of the past two summers.

The river remains open to swimming and other recreation. But warning signs urging visitors to avoid ingesting river water will remain at 10 popular beaches between Cloverdale and the river mouth as a precaution against exposure to the neurotoxin involved, the Sonoma County Department of Health Services said.

The weekly sampling suggests the threat, already minimal, could be diminishing. But precautions can only be lifted after several weeks pass without detection of the neurotoxin called anatoxin-a, county health personnel said.

Read more at: Blue-green algae-related toxin warnings remain at Russian River beaches | The Press Democrat

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Sonoma County issues toxic algae warning for Russian River beaches

Mary Callahan, THE PRESS DEMOCRAT

Sonoma County provides more information on blue-green algae at its website here

Sonoma County officials posted caution signs at beaches up and down the Russian River on Wednesday alerting visitors to positive test results for a potentially dangerous, naturally occurring neurotoxin linked to harmful algae, a problem surfacing around Northern California this summer.

Water samples collected at three local beaches turned up very low levels of a substance called Anatoxin-a, which is produced by certain species of blue-green algae, Sonoma County health officials said.

It’s the third year in a row the algae-related toxin has been detected in the river.

The most-recent samples were taken Monday and the test results received Wednesday, Sonoma County Health Officer Karen Milman said.

Though the level of toxin in the water “was just at the ability to detect it,” the finding triggers precautionary alerts under state guidelines, she said.

Rivergoers should be particularly watchful of dogs, which are actually attracted to harmful algae, according to studies, and, by virtue of their relative body size and habits when around fresh water, are particularly susceptible to exposure.

Read more at: Sonoma County issues toxic algae warning for Russian River beaches | The Press Democrat

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