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    This website serves as an information portal about eutrophication—the over-enrichment of water by nutrients such as nitrogen and phosphorus—a leading threat to water quality around the world. Explore our interactive map and learn more.

    Eutrophication and Hypoxia

    Resources

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    Topic
    Freshwater
    23 Resources for
    Freshwater
    North America
    Insights
    July 11, 2016

    Guacamole Coasts: Not Just Florida, Not Just Now

    • water pollution
    • mapping
    • pollution
    • wastewater
    • Water Quality
    • water risk
    • water pollution
    • mapping
    • pollution
    • wastewater
    • Water Quality
    • water risk
    Freshwater
    North America
    Insights
    June 10, 2014

    Overcoming Barriers to USDA’s New Conservation Program

    • agriculture
    • water pollution
    • Freshwater
    • Water Quality
    Agriculture is a key source of nutrient pollution in the United States. Photo credit: NOAA, Flickr
    • agriculture
    • water pollution
    • Freshwater
    • Water Quality
    Freshwater
    North America
    Insights
    January 7, 2014

    A New Strategy to Improve Water Quality—One Targeted Watershed at a Time

    • water pollution
    • hypoxia
    • Freshwater
    • Water Quality
    More than 15,000 streams, rivers, and lakes are too polluted with nutrient runoff to support wildlife, be enjoyed recreationally, or serve as a drinking water source. Photo credit: USDA
    • water pollution
    • hypoxia
    • Freshwater
    • Water Quality
    Freshwater
    Data
    September 13, 2013

    Eutrophication & Hypoxia Map Data Set

    • Freshwater
    • pollution
    • water pollution
    • mapping
    • data
    • Freshwater
    • pollution
    • water pollution
    • mapping
    • data
    Freshwater
    North America
    Insights
    April 17, 2013

    Can Nutrient Trading Shrink the Gulf of Mexico's Dead Zone?

    • water pollution
    • hypoxia
    • Freshwater
    Dead fish resulting from toxins or oxygen depletion in Lake Binder, Iowa. Photo credit: Dr. Jennifer L. Graham, U.S. Geological Survey
    • water pollution
    • hypoxia
    • Freshwater
    Africa
    Data
    March 27, 2008

    Coastal Eutrophic and Hypoxic Areas of Africa

    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    Asia
    Data
    March 27, 2008

    Coastal Eutrophic and Hypoxic Areas of Asia

    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    Oceania
    Data
    March 27, 2008

    Coastal Eutrophic and Hypoxic Areas of Australia and Oceania

    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    Data
    March 27, 2008

    Coastal Eutrophic and Hypoxic Areas of Europe

    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    Latin America
    Data
    March 27, 2008

    Coastal Eutrophic and Hypoxic Areas of South America

    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    Latin America North America
    Data
    March 27, 2008

    Coastal Eutrophic and Hypoxic Areas of North America and the Caribbean

    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
    • Ocean
    • Freshwater
    • hypoxia
    • Water Quality
    • water pollution
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