Isolated Low-Temperature (<90°C) Geothermal Systems

Data includes resource temperature estimates and beneficial heat/thermal energy available for Isolated low-temperature (<90°C) geothermal systems (906 of 978 systems have coordinate information and presented in GT Prospector). Temperature values were estimated through the use of chemical geothermometer calculations and from information on flow rate, temperature gradient, and geologic environment. The three temperature values were used to form a triangular density distribution for calculation of the energies for each system. The geologic province is also given for each system to provide a key to the summarized values for isolated systems. The data is obtained from the United States Geological Survey (U.S.G.S.) Open-File Report 83-250 (Table-2) titled Low-Temperature (Less Than 90°C) Geothermal Systems in The United States; Reference Data for U.S.G.S. Circular 892. The report was originally published in 1982 and updated in 2015 (report forthcoming from USGS). For more information and to access the reports visit links below.

http://pubs.usgs.gov/circ/1983/0892/report.pdf http://www.osti.gov/scitech/servlets/purl/5456555/