NY State DEC Harmful Algal Bloom Notifications and Reporting

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 two weeks. Go to the DEC website, NYHABS, and 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.

An algal bloom or marine bloom or water bloom is a rapid increase in the population of algae in an aquatic system. Algal blooms may occur in freshwater as well as marine environments. ... These are a result of blue-green algae, which are actually bacteria (cyanobacteria)

Several blooms have been confirmed in Lake Carmel in Putnam and Lake Peekskill in Westchester County the past month

Know it. Avoid it. Report it.

If you see a HAB, please use the reporting form to submit a report to NYHABS.  

Because waterbodies may have HABs that have not been reported to DEC, we recommend avoiding contact with floating mats, scums, and discolored water.

If you, your family, or pet have been in contact with a HAB, please rinse with clean water and report any symptoms to your local health department. 


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