Surface Current Mapping

HFRNET Surface Current Mapping

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Data access is available in a number of formats and protocols:

Learn more about data access. Regional abbreviations used and their definitions:

Station status is monitored in near real-time.
There is a kml station status file that provides basic metadata for reporting stations.

Disclaimer: This is a research project and may contain errors. Please contact with the providers of this data to ensure accurate values before making any critical judgements.

Ocean current maps are a product of the Coastal Ocean Currents Monitoring Program (COCMP). The project is funded by California State Coastal Conservancy and the State Water board with resources from California Clean Water, Clean Air, Safe Neighborhood Parks, and Coastal Protection Act of 2002 and the Water Security, Clean Drinking Water, Coastal and Beach Protection Act of 2002. COCMP is managed by the California State Coastal Conservancy.

To learn more about using radio waves to track ocean surface currents, view our site reference here. You can learn more about how HF radar works, and how it's used to track oil spills, coastal discharges, and marine populations in California's coastal waters. You can also view a comprehensive listing of all of the HF radar sites along the California coastline. Check out your region and find out what sites are nearby. To request a hard copy, please contact us at

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