Eutrophication & Hypoxia Map Data Set

Full dataset of eutrophic and hypoxic coastal areas.

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The Interactive Map of Eutrophication & Hypoxia represents 762 coastal areas impacted by eutrophication and/or hypoxia. There are 479 sites identified as experiencing hypoxia, 55 sites that once experienced hypoxia but are now improving, and 228 sites that experience other symptoms of eutrophication, including algal blooms, species loss, and impacts to coral reef assemblages. These data were compiled using a literature search conducted by Dr. Robert Diaz of VIMS and WRI staff.


Because this map depends on available data, geographic areas with more data availability (such as the United States) may show relatively more problem areas compared to areas with less data. We need your help to ensure that this dataset is accurate and up to date. Please let us know if we are missing a site, or if you believe a site on the map is misclassified. Please also note that this dataset was last updated in 2011; conditions have likely changed since then.


Diaz, R., M. Selman. and C. Chique. 2011. 'Global Eutrophic and Hypoxic Coastal Systems.' Washington, DC: World Resources Institute. Eutrophication and Hypoxia: Nutrient Pollution in Coastal Waters. Available online at:

Access & Use Information

License: Creative Commons Attribution 4.0 International License. Full license text available at Creative Commons Attribution 4.0


Project: Eutrophication and Hypoxia

Page Last Updated: June 28, 2016

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