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Harmful Algae & Red Tide Regional Map

Map View About HAB News What Are HABs? HAB Species
Follow the links above to learn more about harmful algal blooms (HABs), HAB species, and collection procedures. Click a station on the map below to view data on potential harmful algal species and water conditions at regional stations.
PDT - Pacific Daylight Time (UTC-7) Summer (Apr-Oct)
PST - Pacific Standard Time (UTC-8) Winter (Nov-Mar)
more information
Note: Harmful algal bloom data is collected for the purpose of scientific study and is not intended to be used as an indicator of health or safety. For information on quarantines and statewide HAB updates, please visit the California Department of Public Health website. For information on water safety and beach closures, please visit the Heal the Bay Beach Report Card website at http://www.healthebay.org/. For official reports on water quality and beach safety, please visit the California State Water Resources Control Board at http://www.swrcb.ca.gov/.
SoCal Map