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Starting late February 2024, the Site Service will stop retrieving new water quality samples/results data or updates to existing data for queries using hasDataTypeCd=qw.

USGS Water Services

This site serves USGS water data via automated means using web services and extensible markup language (XML), as well as other popular media types. Services are invoked with the REST protocol. These services designed for high fault tolerance and very high availability.

  • Instantaneous Values Service

    Retrieve current streamflow, gage height, and hundreds of other real-time data for one or multiple locations.

  • Statistics Service

    Retrieve daily, monthly or annual statistics for sites. Statistics are provided on approved data only for time-series sites. Statistics are available for any parameter on these sites with approved data.

  • Groundwater Levels Service

    Retrieve historical manually-recorded groundwater levels from hydrologic sites served by the USGS. (If you are looking to retrieve data for real-time or historical groundwater levels recorded on a regular basis using automated equipment, please use the instantaneous values web service.)

  • Site Service

    The service allows searches for USGS sites and site information using a variety of flexible filters. Output formats include tab-delimited and KML formats (used with Google Earth and Google Maps).

  • Daily Values Service

    Interested in historical summarized daily data about our nation's streams, lakes and wells? This service provides a wealth of historical water data. Daily data available for USGS water sites include mean, median, maximum, minimum, and/or other derived values.

  • Water Quality Services

    The USGS and the U.S. Environmental Protection Agency (EPA) each collect vast amounts of water quality data. A jointly developed web service allows you to retrieve data for millions of quality checked water quality samples and results.