Cyanobacteria Bloom in Lake Washington - November 2007

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Images from a cyanobacteria (blue-green algae) bloom on Lake Washington at the University of Washington Aquatic center

At the University of Washington

Blue tint visible on Aphanozomen can be seen when the bacteria dies and decomposes

Aphanozomen up close

Dogs at Magnuson Park Off Leash area. While the water has tested negative for toxicity, it is advisable to keep you pets from drinking the water.

Close up of bacteria at Magnuson Park Off Leash area

Related Information:

Cedar River / Lake Washington Watershed