Visit NYHABS, DEC's harmful algal bloom notification map to view locations of freshwater HABs in New York State that were reported in the past week. Click on a dot for more information, including the date it was reported, the waterbody name, and pictures.
Click on the arrow at the bottom of the screen to view a list of reported HABs.
Instructions on how to use NYHABS are on DEC's HABs notification webpage.
Know it: HABs vary in appearance from scattered green dots in the water, to long, linear green streaks, pea soup, or spilled green paint, to blue-green or white coloration.
Avoid it: People, pets, and livestock should avoid contact with floating mats, scum, and discolored water.
Report it: Report a suspected HAB using the NYHABs online reporting form. Report health concerns related to HABs to the Department of Health at harmfulalgae@health.ny.gov, or contact your local health department.
Report a HAB
