Contact Us Search
Organization Title

Geothermal Resources- Maps

GIS Mapping

DISCLAIMER: The well information and data represented on this site varies in accuracy, scale, origin and completeness and may be changed at any time without notice. While the California Department of Conservation, Division of Oil, Gas and Geothermal Resources (DOC) makes every effort to provide accurate information, DOC makes no warranties as to the suitability of this product for any particular purpose. Any use of this information is at the user's own risk.

DATA FORMATS: Well data is available in Microsoft Excel files and shapefile formats. Microsoft Excel can be saved to your computer and brought into other database software applications. Shapefiles are specific to ESRI's ArcGIS software; however, many other mapping programs have the ability to import shapefiles.

NOTE: For information not found in these tables, please contact the district office directly. If you would like to receive notification of future updates, please email with "ADD ME" in the subject line. Updates will be sent to the email address being used in the request only.

View "Readme2012" for definitions of data elements (metadata)


GIS Data (shapefile) Well Data - (Excel)

AllWells (posted 11/12/2013)

AllWells (posted 11/12/2013)

District 1 (posted11/12/2013)

District 1

District 2 (posted 11/12/2013)

District 2

District 3 (posted 11/12/2013)

District 3

Field Boundaries (posted 09/25/2013)





Geothermal Maps

The Division of Oil, Gas, and Geothermal Resources prepares and publishes oil, gas, and geothermal maps for the State of California.

NOTE: You must have Adobe Acrobat Reader version 5.0 or above to read and print out maps downloaded from the map section. This free software may be downloaded from Adobe.

General Information


Map# / Download Name / Description File Size (KB)

Download Geothermal Well Location Spreadsheet
Geothermal Well Location Spreadsheet
Geothermal well locations can be found in an Excel file that contains the API number, operator name, well name and number, and latitude and longitude. 

Geothermal Map of California
Map showing geothermal fields, known geothermal resource areas, high-temperature wells, geothermal springs, and power plants. (2002).

Get Back Issues
Monthly Map Revision Bulletin
Monthly compilation of changes to Division maps. Download the latest issue or back issues (last updated July 2007).
Oil, Gas, and Geothermal Fields in California
Map showing California oil, gas, and geothermal fields; sedimentary basins with oil and gas production; and California counties with commercial oil, gas, and geothermal production (2001).
Energy Map of California
Map showing sedimentary basins; oil, gas, and geothermal fields; oil, gas and product pipelines; tanker ports; refineries; and geothermal, nuclear, wind, cogeneration, hydroelectric, and fossil fuel electrical-generation plants. (2000).


Digital maps 

 District G1

Map# / Download   Name / Description File Size (KB)
Casa Diablo/Long Valley Caldera Area (Mono County) 2009  413
Lake City (Modoc County) 2009  182
Litchfield, Wendel, Susanville (Lassen County) 2009  451

District G2

Map# / Download   Name / Description File Size (KB)
Salton Sea (North) (Imperial County) 2008  160
Salton Sea (South) (Imperial County) 2008  162
Brawley (Imperial County) 2008  163
Heber (Imperial County) 2008  169
East Mesa (Imperial County) 2008  160
Mesquite (Imperial County)
This map has been discontinued. See Map W1-8 for wells in the area of this map.
Hot Mineral Spa (Imperial/Riverside County) 2005  168

District G3

Map# / Download   Name / Description File Size (KB)
The Geysers (Lake, Sonoma, and Mendocino Counties) 2009  337
Calistoga (Napa County) 2001  249
The Geysers Area (Sonoma, Lake, Mendocino, and Napa Counties) 2001  760
NCPA Spreadsheet List of NCPA wells with their alternate well names. 54.7