Data Analysis Tools

Long-term groundwater-level data are fundamental to the resolution of problems dealing with groundwater availability and sustainability. Significant periods of time typically are required to collect water-level data needed to assess the effects of climate variability, to monitor the effects of regional aquifer development, or to obtain data sufficient for analysis of water-level trends.

Streams, rivers, lakes and reservoirs are important natural resources for irrigation, public supply, wetlands and wildlife.  Excess precipitation that flows into these sources is called runoff, and it's an important drought indicator.  The California Water Science Center tracks both monthly and annual runoff. 

Careful observation and analysis of the movement and condition of surface water is essential for understanding this resource, especially during times of drought. The California Water Science Center uses a network of more than 500 streamgages to collect real-time data on surface water at locations across the state.

The EDNA Watershed Atlas contains watershed characteristics for major named rivers of the contiguous U.S. including maps, images, legends, and statistics derived from the EDNA Watershed Characteristics model.

In order to understand the integrated hydrologic systems in the San Antonio Creek Valley, many different types of data are being gathered from both the surface water and groundwater system. Learn about these data types and explore them with the interactive map.

The USGS models shown on this site are in the public domain, and are freely available. They are based on MODFLOW and other public-domain USGS software. Links to publications and web resources associated with each model are shown in the table next to the model map. The associated model files for some of these models are currently available via download.

Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) Viewer Notes

The viewer uses extensive JavaScript and frames which means some browsers may not be able to support full interactive capabilities.

Additionally, the viewer may be difficult for some users to interpret. These users may contact EROS Customer Services, or the maintainer of these pages for assistance.

The Vegetation Dynamics/Drought viewer provides a dynamic online map interface that can be used to view USGS and other data. 

The USGS monitors current streamflow and water-quality conditions at various sites in the Animas and San Juan River Basins in Colorado, New Mexico, and Utah, including areas below the Gold King Mine release area. These streamgages provide continuous data on streamflow and select water-quality constituents including specific conductance, water temperature, pH, and turbidity.

While some instrument teams provide science-ready versions of their data, many other archives must first be processed by the individual researcher. POW provides users with calibrated cartographic images that can be used for geologic mapping, analysis in a Geographic Image System (GIS), change detection, merging of dissimilar instrument images, and use in a host of other scientific applications.

Planetary nomenclature is used to uniquely identify a feature on the surface of a planet or satellite so that the feature can be easily located, described, and discussed.

See the FAQ for more information on common questions.

For general inquiries regarding planetary nomenclature or the Gazetteer website, please contact Tenielle Gaither by emailing tgaither@usgs.gov.

PILOT (Planetary Image Locator Tool) is an online data portal used by planetary scientists and cartographers to search through the raw archives of the PDS Cartography and Imaging Science Node. It searches through a large catalog of visual, infrared and spectrometer camera images taken of planetary bodies in our solar system. For information on specific missions, please visit the Data Portal.