What is a Harmful Algal Bloom (HAB)?
What is a HAB?
Harmful algal blooms (HABs) are actually bacteria (not algae) that can produce toxins. When weather conditions are calm and there is an increase in water temperature and nutrients, they can rapidly increase in number producing a bloom. Blooms can occur at any time, but they most often occur in late summer or early fall.
What do HABs look like?
HABs can be blue, bright green, brown, or red and may look like paint or anti-freeze floating on the water. As the bloom matures, it may look like foam, scum, or mats on the surface of freshwater lakes and ponds. If you or pets or livestock swim in or drink from water that contains a bloom, the effects can be dangerous.