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NGDC Geothermal Data Bases

Geothermics is the study of heat generated in Earth's interior and its manifestation at the surface. The National Geophysical Data Center (NGDC) has a variety of publications and data sets which provide information on the location, magnitude, and potential uses of geothermal resources. The publication, "Thermal Springs List for the United States" (1981) is a compilation of 1,700 thermal springs locations in 23 states. The list gives the geographic locations of thermal springs by state, and is sorted by degrees of latitude and longitude within the state. It contains the name of each spring (where available), maximum surface temperature (in both degrees Fahrenheit and degrees Celsius), name of corresponding USGS 1:2,500,000-scale (AMS) map, largest scale USGS topographic map coverage available (either 7.5 or 15-min. quadrangle), and cross-references. Thermal springs listed include natural surface hydrothermal features (springs, pools, mud pots, mud volcanoes, geysers, fumaroles, and steam vents) at temperatures of 20 degrees Celsius (68 degrees Fahrenheit) or higher. They do not include wells or mines, except at sites where they supplement or replace natural vents that have been active recently or at sites where orifices are indistinguishable as natural or artificial. The thermal springs data from this publication are also available on-line."Geothermal Gradient Map of the United States" (1982) shows 1,700 wells, with accompanying heat flow and conductivity data. This map was produced in cooperation with Los Alamos National Laboratory. Thermal aspect data (1991) from the Decade of North American Geology project, are available on diskette. These data were compiled by Dr. David Blackwell of Southern Methodist University. Global heat flow data (1993) were compiled by Dr. Henry Pollack of the University of Michigan. Data were collected through the World Heat Flow Committee of the International Council of Scientific Unions. These are available on-line.
Cite this dataset when used as a source.
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Distribution Formats
  • ArcIMS
  • Shapefile
Distributor Distributor information not available
Dataset No POCs available for this dataset
General Documentation
  • publication: 1981-01-01
Edition: First
Dataset Progress Status Complete
Data Update Frequency: Not planned
Purpose: Historical Records and Basis for Future Studies
Use Limitations
  • While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. OAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
    • George Berry, Cooperative Institute for Research in Environmental Sciences (CIRES). University of Colorado/NOAA, Boulder, Colorado
    • Paul J. Grim and Joy A. lkelman, National Geophysical and Solar-Terrestrial Data Center, NOAA, Boulder, Colorado
    Time Period: 1978-01-01 to 1985-01-01
    Spatial Bounding Box Coordinates:
    N: 75
    S: 15
    E: -65
    W: -180
    Theme keywords
    • EARTH SCIENCE > Hydrosphere > Ground Water > Springs
    • EARTH SCIENCE > Solid Earth > Geothermal > Geothermal Temperature
    Place keywords Getty Thesaurus of Geographic Names
    • North and Central America > United States
        Use Constraints
        • Use Constraints: None
        Access Constraints
        • Access Constraints: None
        • free online download
        Lineage information for: dataset
        Lineage Statement Lineage prior to transfer to NGDC is unknown.
        Last Modified: 2015-09-17
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