Harmful Algal Blooms
Report Algal Blooms: Use our Algae Bloom Sighting Report or call (877) 224-7229.
*** Due to staffing changes, the phytoplankton monitoring program has been temporarily suspended as of 12/1/2020. We hope to resume sample collection and identification as soon as possible. ***
To learn more about Harmful Algal Blooms (HABs) visit the Phytoplankton Monitoring Program. We also have a basic factsheet on harmful algae in the Chesapeake and Coastal Bays. To learn about the state-wide harmful algal bloom surveillance program, check out this factsheet on Harmful Algal Bloom Management.
For a full-screen map view click here
Please wait while the map loads...
Recent HAB Stories:
View the Archived HAB Map (qualitative data)
Note: Archived HAB Map data from samples prior to 2015 should not be used for analytical purposes
as these were qualitative assessments based on live cell counts.
If you would like to request algae data, please email us.