20241101 15492400 1.0 FALSE GeothermalPoints_Table 20250624 10000700 20250624 10000700 150000000 5000 FGDC 67b2bbce47524649b7e637885b49a242 dataset Mineral Resources Program California Geological Survey, Department of Conservation minerals@conservation.ca.gov 715 P St, MS 19-01 Sacramento CA 95814 US (916) 455-1825 (916) 324-6490 Mineral Resources Program 20250624 File Geodatabase Feature Class 3.3.1 <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 0 0;"><SPAN>In 1994, the Department of Conservation published </SPAN><SPAN STYLE="font-style:italic;"><SPAN>California Low-Temperature Geothermal Resources Update</SPAN></SPAN><SPAN>, a compilation of chemical data from low-temperature (20-150° C) geothermal springs and wells throughout California. Funded by the U.S. Department of Energy through subcontract #1092-023 (R) with the Oregon Institute of Technology, Geo-Heat Center, the report summarized sampling efforts on thermal waters across California from the 1960s through 1980s. It provided an important inventory of these previous studies and a valuable snapshot of California’s geothermal systems. The California Geological Survey converted the 1994 report’s data into this interactive web map to increase awareness and accessibility of this historical data. A complete copy of the report can be obtained through our website  https://www.conservation.ca.gov/.</SPAN></P><P /><P STYLE="margin:0 0 0 0;"><SPAN>This interactive map displays data from the 1994 report </SPAN><SPAN STYLE="font-style:italic;"><SPAN>California Low-Temperature Geothermal Resources Update, </SPAN></SPAN><SPAN>which compiled previously published chemical data for California geothermal systems. Before interpreting the data, users should refer to the original cited publication(s) for detailed metadata about methods of sample collection and chemical analysis. Reviewing the original publications helps avoid propagating transcription errors from the 1994 compilation. Verifying the values for each sample against their original source publications was beyond the scope of this web map.</SPAN></P></DIV></DIV></DIV> Geothermal Springs and Wells -Table 2025-06-10T00:00:00 Mineral Resources Program California Geological Survey, Department of Conservation minerals@conservation.ca.gov 715 P St, MS 19-01 Sacramento CA 95814 (916) 455-1825 (916) 324-6490 Mineral Resources Program -128.66555227696804 -111.58181204259759 42.21208504992162 32.21261816735065 1 Mineral Resources Program California Geological Survey, Department of Conservation minerals@conservation.ca.gov 715 P St, MS 19-01 Sacramento CA 95814 (916) 455-1825 (916) 324-6490 Mineral Resources Program Mineral Resources Program Geothermal geothermal spring geothermal well thermal well thermal spring geothermal This interactive map displays data from the 1994 report California Low-Temperature Geothermal Resources Update, which compiled previously published chemical data for California geothermal systems. Before interpreting the data, users should refer to the original cited publication(s) for detailed metadata about methods of sample collection and chemical analysis. Reviewing the original publications helps avoid propagating transcription errors from the 1994 compilation. Verifying the values for each sample against their original source publications was beyond the scope of this web map. California Department of Conservation, California Geological Survey. Reports are available for viewing and downloading online at: https://www.conservation.ca.gov/. <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Copyright 2024 Department of Conservation, California Geological Survey. All rights reserved. No part of this dataset may be reproduced, transmitted, or distributed in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of the California Geological Survey except as follows. Permission is granted to reproduce under the following conditions: 1) for personal use, 2) for publication in a report in unmodified form; cite on figure or in text as "Reproduced with permission from Mineral Resources Program, California Geological Survey", and 3) for publication in a report in modified form; cite on figure or in text as "Modified from” plus the appropriate report title, authors, and date.</SPAN></P><P><SPAN>Disclaimer: The State of California and the Department of Conservation make no representations or warranties regarding the accuracy of the data from which these maps were derived. Neither the State nor the Department shall be liable under any circumstances for direct, indirect, special, incidental or consequential damages with respect to any claim by any user or any third party on account of or arising from the use of this map.</SPAN></P></DIV></DIV></DIV> Esri ArcGIS 13.3.0.52636 <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Copyright 2024 Department of Conservation, California Geological Survey. All rights reserved. No part of this dataset may be reproduced, transmitted, or distributed in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of the California Geological Survey except as follows. Permission is granted to reproduce under the following conditions: 1) for personal use, 2) for publication in a report in unmodified form; cite on figure or in text as "Reproduced with permission from Mineral Resources Program, California Geological Survey", and 3) for publication in a report in modified form; cite on figure or in text as "Modified from” plus the appropriate report title, authors, and date.</SPAN></P><P><SPAN>Disclaimer: The State of California and the Department of Conservation make no representations or warranties regarding the accuracy of the data from which these maps were derived. Neither the State nor the Department shall be liable under any circumstances for direct, indirect, special, incidental or consequential damages with respect to any claim by any user or any third party on account of or arising from the use of this map.</SPAN></P></DIV></DIV></DIV> Original data in Lotus 123 was translated to MS Excel and then imported to ArcGIS to generate the point data. All points were checked for location accuracy against report coordinates and other sources if large discrepancies were present. Minimum data correction was applied to maintain data original standards. The feature class was prepared for web service by streamlining the attributes with introduction of domains where appropriate or full descriptive values (i.e. County attributes) for easy of queries and/or filter tools. Report: California Low-temperature Geothermal Resources Update - 1993. By Leslie G. Youngs. Department of Conservation, Division of Mines and Geology. 1994. The feature class was prepared for web service by streamlining the attributes with introduction of domains where appropriate or full descriptive values (i.e. County attributes) for easy of queries and/or filter tools. 2025-06-03T00:00:00 Mineral Resources Program California Geological Survey, Department of Conservation minerals@conservation.ca.gov 715 P St, MS 19-01 Sacramento CA 95814 US (916) 455-1825 (916) 324-6490 Mineral Resources Program Mineral Resources Program 989 EPSG 6.8(9.2.0) Geothermal Spring or Well Spring or well of thermal emanating from the geologic matrix at the location. Feature Class 989 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. ID ID# Integer 4 0 0 Identification number assigned to each well or spring for this report CGS SOURCE_NAME Source Name String 255 0 0 Name of spring, well owner, or other identification CGS TYPE Type String 50 0 0 Code definitions: SP - Spring SW - well drilled to control spring flow. WW - water well. NLT - noncommercial low temperature. TG - temperature gradient. INJ - injection well. OIL - petroleum well. X - type not confirmed, but most appear to be high temperature exploration wells. CGS SP Spring CGS SW well drilled to control spring flow. CGS WW Water well CGS NLT noncommercial low temperature. CGS TG temperature gradient. CGS INJ injection well. CGS OIL petroleum well. CGS X type not confirmed, but most appear to be high temperature exploration wells. CGS PLOT Plot String 5 0 0 Location is plotted on the statewide map: Y = yes. N = no. CGS LAT LAT Double 8 0 0 Latitude in decimal degrees CGS LONG LONG Double 8 0 0 Longitude in decimal degrees CGS CO County String 50 0 0 California county three letter code. County codes are shown in Appendix A at the end of this report. CGS DOC.GeothermalPoints_Table.AREA DOC.GeothermalPoints_Table.AREA String 255 0 0 TEMP Temp Celsius String 20 0 0 Temperature in degrees Celsius. W-warm, H-hot. CGS DEPTH_m Depth Meters Double 8 0 0 Well depth in meters CGS FLOW_Liter_min Flow Liter/Min Double 8 0 0 Flow rate in liters per minute CGS STATUS Status String 50 0 0 Operating status: F - flowing. P - pumped. I - idle. A - abandoned. D - dried up. H - heat exchanger in well. CGS F Flowing CGS P Pumped CGS I Idle CGS A Abandoned CGS D Dried up CGS H Heat exchanger in well CGS USE_ Use String 255 0 0 DATE_Sample Date Date 8 0 0 Date of data CGS pH pH Double 8 0 0 The pH of fluid in pH units CGS CONDUCT Conduct Integer 4 0 0 Conductance as micromhos per centimeter CGS Na Na Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS K K Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS Ca Ca Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS Mg Mg Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS Fe Fe Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS Li Li Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS B B Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS SiO2 SiO2 Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS HCO3 HCO3 Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS SO4 SO4 Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS Cl Cl Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS F F Double 8 0 0 Concentrations of the major cations and anions as milligrams per liter (Mg/L) CGS As_ As Double 8 38 8 TDSm TDSm Integer 4 0 0 Total dissolved solids measured (Mg/L) CGS TDSc TDSc Integer 4 0 0 Total dissolved solids calculated (Mg/L) CGS REFERENCE reference String 255 0 0 Source of data CGS Pages Pages String 25 0 0 Page reference in source of data CGS Revision Revision String 300 0 0 Notes on edits done to the data to correct any inaccuracy. CGS