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Better Forests, Better Cities

Cityscape behind lush forest.

STATEMENT: Fourth National Climate Assessment Confirms Climate Change Will Affect All Regions and All Sectors of U.S. Economy

  • Air Quality
  • Water Security
  • fires
  • climate science
  • natural infrastructure
  • Climate Resilience
  • agriculture
  • climate change
  • health
  • climate impacts
  • water pollution
  • pollution
  • sea level rise
  • Ocean
  • Air Quality
  • Water Security
  • fires
  • climate science
  • natural infrastructure
  • Climate Resilience
  • agriculture
  • climate change
  • health
  • climate impacts
  • water pollution
  • pollution
  • sea level rise
  • Ocean

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
Initiatives
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.

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
Data

Coastal Eutrophic and Hypoxic Areas of Africa

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

Coastal Eutrophic and Hypoxic Areas of Asia

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

Coastal Eutrophic and Hypoxic Areas of Australia and Oceania

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

Coastal Eutrophic and Hypoxic Areas of Europe

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

Coastal Eutrophic and Hypoxic Areas of South America

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

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
Data

World Hypoxic and Eutrophic Coastal Areas

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