Oil, Gas & Geothermal - District Map Index

Digital Well Locations - Geothermal Wells

Digital well locations for wells are available in a database file that contains the latitude and longitude for each geothermal well in the state. The database file can be downloaded as a statewide file (with approximately 3500 wells listed).

The database file is available as a dbf or Shapefile that can be downloaded (saved) to your computer. The Mapping software used by the Division to prepare maps is moving out of MapInfo and into ArcGIS software, but other mapping software should be able to import the DBF files. The information contained in the these files includes API number; operator; well name and number; section, township, and range; spud date (DBF only); comments (DBF only); and the latitude and longitude (non projected Latitude/Longitude -  GCS-NAD83).

Geothermal well status codes:

G000 geothermal-location
G002 geothermal-drilled-idle
G006 geothermal-dry hole-plugged and abandoned
G008 geothermal-capable of production
G009 cold water well
G010 geothermal-capable of production-idle
G012 geothermal-production-idle
G014 geothermal-production-plugged and abandoned
G040 geothermal-injection
G042 geothermal-injection-idle
G044 geothermal-injection-converted from production
G066 geothermal-observation
G067 geothermal-observation-plugged and abandoned
G068 cold water observation
G069 geothermal-observation-converted from production
G070 cold water observation-plugged and abandoned
G071 geothermal-observation-converted from production-plugged and abandoned
G136 geothermal-injection-plugged and abandoned-converted from production
G140 geothermal-injection-plugged and abandoned
G212 geothermal-temperature gradient hole
G214 geothermal-temperature gradient hole-plugged and abandoned

The geothermal well databases contain the following information in the comments section. The first grouping of letters indicates the well status. The second grouping indicates the type of well and the third indicates whether the well records are confidential or not. Y indicates yes and N indicates no.

The coding for well status is as follows:

The coding for well type is as follows:
EST-exploratory steam
EWT-exploratory water
DST-developmental steam
DWT-developmental water
TG-temperature gradient
CLT-commercial low temperature
NLT-noncommercial low temperature
WW-water well

In the spud date column, where the month and date both equal 12, the year the well was spud is recorded but the day and month of the year are not in the database.
In the district column, 7 is Geothermal District G1, 8 is Geothermal District G2 and 9 is Geothermal District G3.


These codes indicate the means by which the well location data was collected.
HUD - Heads up digitized (from scanned, georeferenced mylar map)
GPS - Collected via Global Positioning System
MIP - Location derived from MapInfo Plot of section corner calls
OPR - Data provided by operator

DISCLAIMER: The database information may change without notice. The Department of Conservation makes no warranties, whether expressed or implied, as to the suitability of the product for any particular purpose. Any use of this information is at the user’s own risk. For further information or to make suggestions about the maps, contact the Division of Oil, Gas, and Geothermal Resources, 801 K Street, MS 20-20, Sacramento, CA 95814-3530. Any problems, call Jennie Catalano at (916) 327-1042.