WellSTAR: Well Stimulations

This online map provides the locations of wells that have been stimulated under an approved Well Stimulation Permit. The map display also provides information related to the well/stimulation treatment including: operator, field, well type, permit number, stimulation type, and the amount of base fluid used. CalGEM is the Geologic Energy Management Division of the California Department of Conservation, formerly the Division of Oil, Gas, and Geothermal Resources (as of January 1, 2020). WellSTAR homepage Update Frequency: As Needed