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

Click map to go to current water resources conditions in the U.S.

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WaterAlert

WATER SCIENCE SPECIALTIES

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

Streams, lakes, and reservoirs Science to observe, analyze, and understand the movement and condition of surface water.	Floods and droughts Study the conditions and consequences of water over-abundance or scarcity. Subscribe to hydrologic alerts! - WaterAlert
Groundwater, aquifers, and wells Science to discover and describe the location, condition, and behavior of water in the ground. Groundwater-level Responses to Virginia Earthquake	Water use Information about how water is used now and in the past.
Quality of water resources Science to monitor and evaluate biological, chemical, and environmental factors affecting water quality.	Contamination and pollution Study the existence and results of harmful substances in water, produced by humans and natural processes.
International water activities Ongoing water projects of international interest.	Methods and modeling Available tools and expertise to conduct water resources science.

Water Science by State

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