Blue-Green Algae

Blue-green algae is actually a bacteria, called cyanobacteria, that is commonly found in lakes, rivers and other surface waters. Blue-green algae produce rapidly with adequate sunlight, nutrients and temperature. There are several links below with information regarding blue-green algae.

If you wish to report a blue green algae bloom at a lake in Cowlitz County please either contact us at (360) 414-5599 or use the link below to the Department of Ecology Bloom Reporting website. Sampling data from Cowlitz County lakes can be found in the Department of Ecology Toxic Algae Monitoring Database.

• Department of Ecology Algae Bloom Reporting Webpage
• Department of Ecology Toxic Algae Monitoring Database
• Department of Health Blue-Green Algae Webpage
• Department of Health Blue-Green Algae Brochure
• City of Woodland Horseshoe Lake Committee Webpage