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NCEI Geothermal Database

Metadata Updated: June 22, 2022

Geothermics is the study of heat generated in Earth's interior and its manifestation at the surface. The NOAA National Centers for Environmental Information 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.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Date June 16, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date June 22, 2022
Reference Date(s) January 1, 1981 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from NGDC Collection

Graphic Preview

Geyser at Yellowstone National Park

Additional Metadata

Resource Type Dataset
Metadata Date June 16, 2022
Metadata Created Date November 12, 2020
Metadata Updated Date June 22, 2022
Reference Date(s) January 1, 1981 (publication)
Responsible Party NOAA National Centers for Environmental Information (Point of Contact)
Contact Email
Guid gov.noaa.ngdc.mgg.hazards:G01139
Access Constraints Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose., Cite as: DOE Los Alamos National Laboratory. 1981: NCEI Geothermal Database. First. NOAA National Centers for Environmental Information. Accessed [date].
Bbox East Long -65
Bbox North Lat 75
Bbox South Lat 15
Bbox West Long -180
Coupled Resource
Frequency Of Update notPlanned
Graphic Preview Description Geyser at Yellowstone National Park
Graphic Preview File
Graphic Preview Type JPEG
Harvest Object Id 2036453c-d78b-46de-81fa-b84e6758a862
Harvest Source Id 5088829e-ee94-4daf-8d22-e38f5358f506
Harvest Source Title NGDC Collection
Metadata Language
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, 15.0], [-65.0, 15.0], [-65.0, 75.0], [-180.0, 75.0], [-180.0, 15.0]]]}
Progress completed
Spatial Data Service Type ArcGIS Map Service
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1978-01-01
Temporal Extent End 1985-01-01

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