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Click on datapoints in the HABs map for more information & data:

Note: If no data points are visible, no data are available, choose a different date range.

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Eyes on the Bay - Interactive Mapping of Current Year Long-Term Station Data
Show Legend
Relative algal abundance:
blue circle map icon
Site Sampled
Algae were sampled, no harmful species identified
green circle icon
Algae Bloom
High abundance of algae that are not known to produce any toxins
orange map icon
HAB Present

A species of concern was identified below bloom thresholds

red triangle map icon
HAB Bloom
Potentially harmful algae detected above bloom thresholds
Algae are a natural part of the Bay ecosystem; however, some algae may be harmful when they bloom in unnaturally high abundance or they may produce a toxin that can impact people, animals and/or bay life.  Toxin testing is initiated when cell densities exceed set thresholds.

Visit DNR's Harmful Algal Bloom page for more information.

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