Water Resources of the United States


National Water Information System

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

Today's Water Conditions

View comparisons of current and historical conditions using maps
Click map to go to current water resources conditions in the U.S.



USGS Water Science Centers are located in each state

Water Resources Programs

Local Water Resources Offices — State and Regional

The USGS manages water information at offices located throughout the United States. Although all offices are tied together through a nationwide computer network, each collects data and conducts studies in a particular area. Local information is best found at these sites.

USGS Programs Managed by the Water Resources Discipline

  • Cooperative Water Program
    Conducts data collection and investigations that form the foundation for water-resources management and planning activities nationwide, through partnerships with over 1,000 State and local agencies.
  • National Streamflow Information Program (NSIP)
    Implements the USGS plan to ensure reliable and consistent acquisition and delivery of streamflow information at key sites.
  • National Water-Quality Assessment Program (NAWQA)
    Provides an understanding of water-quality of the Nation's surface water and groundwater and how those conditions may vary locally, regionally, and nationally; whether conditions are getting better or worse over time; and how water quality is affected by natural features and human activities.
  • Groundwater Resources Program
    Provides research and information for groundwater sustainability and ties to human and environmental needs.
  • Hydrologic Research and Development
    Conducts basic and problem-oriented research into varied and complex hydrologic processes that are not well understood.
  • State Water Resources Research Institute Program
    Supports water resources research, education, and information transfer at the 54 university-based State Water Resources Research Institutes, through the use of matching grants.
  • Hydrologic Networks and Analysis (HNA)
    Includes the Federal core of the USGS water-quality networks, a variety of research and investigations, and a portion of USGS information storage, coordination, and dissemination efforts, including the National Water Information System.



  • National Water Census
    An initiative to provide a nationwide assessment of water availability and use. Information will be provided on components of the water budget, on water use, and ecological flow estimation. Regional Groundwater Studies will be expanded.

International Programs

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Page Last Modified: Tuesday, 25-Aug-2015 13:44:10 EDT