Summer is in full swing, and so is harmful algae bloom season. Cyanobacteria blooms can form in any body of water and can potentially produce toxins. Because only a fraction of our beautiful lakes, rivers and reservoirs are sampled, we want to remind everyone to be on the look-out for cyanobacteria (harmful algal) blooms, which can look foamy, scummy, thick like paint, pea-green, blue-green or brownish red. Children and pets are particularly sensitive to cyanobacteria toxins because of their siz

Toxic Cyanobacteria Bloom in the Virgin River and the Streams of Zion National Park - Zion National Park (U.S. National Park Service)