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Water Resources of the United States


WATER DATA FOR THE NATION

National Water Information System (NWIS)

View current and historical streamflow, groundwater level, and water-quality data

Data Discovery

For more data options, explore our data discovery tools.

Today's Water Conditions

View maps of current and historical conditions

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  • Streamflow
  • Flood and high flow
  • Drought
  • Groundwater levels
  • Surface water quality

Subscribe to hydrologic alerts:

  • WaterAlert

WATER SCIENCE SPECIALTIES

  • Surface Water
  • Groundwater
  • Water Quality
  • Water Use
  • Research

WATER SCIENCE BY STATE

USGS Water Science Centers are located in each state

Water Resources of the United States

The U.S. Geological Survey (USGS) collects information needed to understand the Nation's water resources, and provides access to water data, publications, and maps, as well as to recent water projects and events.

Water Resources Topics
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Streams, lakes, and reservoirs
Science to observe, analyze, and understand the movement and condition of surface water.

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Floods and droughts
Study the conditions and consequences of water over-abundance or scarcity.

Subscribe to hydrologic alerts! - WaterAlert

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Groundwater, aquifers, and wells
Science to discover and describe the location, condition, and behavior of water in the ground.

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Water use
Information about how water is used now and in the past.

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Quality of water resources
Science to monitor and evaluate biological, chemical, and environmental factors affecting water quality.

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Contamination and pollution
Study the existence and results of harmful substances in water, produced by humans and natural processes.

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Ongoing water projects of international interest.

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Methods and modeling
Available tools and expertise to conduct water resources science.

Water Science by State

Learn About Water

Expand your water knowledge:

  • Water Science for Schools
  • USGS water education
  • Water education posters
  • Science In Your Watershed
  • Photos, videos, and podcasts
  • Water Resources Glossaries
  • Frequently asked questions

 


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Page Last Modified: Tuesday, 04-Oct-2011 10:20:27 EDT

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