Long Lake News

Lake Director: Chuck Kiehn

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Risks of Blue-Green Algae

by Tom Ward

Blue-green algae are photosynthetic bacteria known as cyanobacteria and are a natural part of water bodies in Wisconsin.  With enough sunlight and nutrients, cyanobacteria can grow to high levels and form a blue-green algae bloom.  Blooms are often smelly, look like spilled paint or pea soup, and can change the color of the water to green, blue, turquoise, purple, tan, or white. Some blooms form a layer of scum or mats on the surface of the water.

Updated: January 11, 2022 — 3:01 pm