Beware The Creature: Toxic Algae Still At High Levels In Lake Burien


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Looks like the Creature from the B-Town Lagoon is still hanging (or should we say swimming) around – Miller/Walker Creek Steward Dennis Clark reports that this week’s tests of Lake Burien shows a high level of toxic algae.

The most recent levels, taken Oct. 5th, show a level of 563 micrograms per liter, far above the 6 microgram per liter, state-recommended caution level.

The most previous level, taken Sept. 21st, was a 698 reading.

Residents are warned to keep children and pets (especially dogs) out of the lake as a precaution.

Here’s what Clark said in an email:

On Tuesday, October 5, a sample of algae scum was taken from south shoreline of Lake Burien and analyzed for the presence of toxins in the algae.

Preliminary results came from the lab today (Friday, Oct. 8):

The concentration of the October 5 sample was 563 micrograms per liter. This is far above the 6 microgram per liter state-recommended caution level and is comparable to the 698 reading from September 21 obtained from a sample of thick algae at the NE outlet from the lake.

The lake is still producing toxic algae and residents should continue following previously recommended steps to avoid ingesting algae (download here, PDF file). Dogs and small children should be kept out of the lake to minimize risk to their health.

As the weather turns colder and wetter, the human health risks continue to decline as the likelihood of ingestion goes down but dogs – being dogs – can expose themselves at any time of year.

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