Identifying HABs

Identifying Harmful Algae Blooms

Large populations of blue-green algae may produce toxins at a high enough level to affect those using the water for drinking or recreational use.  Individual cyanobacteria cells and green algae cannot be seen with the unaided eye.  However, they may cluster together to form visible algae blooms.  The photos below illustrate what possible Blue-green harmful algae blooms may look like.  A laboratory analysis of a water sample must be completed to determine if toxins are present.

Report a possible Harmful Algae Bloom (HAB)

Examples of Harmful Blue-green Algae Blooms 
Blue-green algae blooms may look like blue, green, or white spilled paint on the water surface.  (Photo: NYS DEC)

Blue-green algae blooms may look like blue, green, or white spilled paint on the water surface.
(Photo: NYS DEC)



Blue-green algae blooms may look like parallel streaks, usually green, on the water surface. (Photo: NYS DEC)

Blue-green algae blooms may look like parallel streaks, usually green, on the water surface.
(Photo: NYS DEC)

Blue-green harmful algae blooms may look like green dots in the water, or green globs on the water surface. (Photo: Ohio EPA)

Blue-green harmful algae blooms may look like green dots in the water, or green globs on the water surface. (Photo: Ohio EPA)


Blue-green Algae Bloom may look like pea soup.  (Photo: NYS DEC)

Blue-green Algae Bloom may look like pea soup.
(Photo: NYS DEC)

 

Seneca Lake HABs Monitoring and Survey Plan for 2016

Harmful Algae Blooms (HABs) Information Sheet