CalGEM Sitemap

​​​​​​​​​​​​About CalGEM

Geologic Energy Management Division​
Districts / In Case of Emergency​
Public Outreach and Community Engagement
Community Concern
Frequently Asked Questions (FAQs)​
Notice to Operators (NTO)


WellSTAR Data Dashboard
WellSTAR Public
Well Finder
WellSTAR Operator
WellSTAR Operator Login
WellSTAR Training Materials for Operators
WellSTAR Tutorials
Well Search Guide
File Request
California Oil and Gas Permits​

Laws & Regulations​

Idle Wells

For Operators - Idle Well Program

Underground Gas Storage (UGS)

Underground Gas Storage ​Data​​

Underground Injection Contro​​l (UIC)

Aquifer Exemptions
Aquifer Exemptions Status
UIC Additional Approved Aquifer Exemptions
For Operators - Underground Injection Control (UIC)​

California Environmental Quality Act (CEQA)

CEQA Projects

Water Reporting in Oil and Gas Operations

Water Use Dictionary, Data, Reports
Water Use Data and Reports

Well Stimulation/Hydraulic Fracturing

Well Stimulation​
Hydraulic Fracturing in California​
Well Stimulation Treatment Oversight and Permit Review
Well Stimulation Treatment Neighbor Notification and Water Sampling
Well Stimulation Treatment Inter-Agency Collaboration
SB4 Environmental Impact Report
Well Stimulation Environmental Impact Report

CalGEM Request for Information on Acid Treatment Data Reporting​
Well Stimulation Treatment Disclosure
Well Stimulation Disclosure Search
Well Stimulation Permit Data
WST Program Requirements​

Well Maintenance

Regional CalGEM Focuses

AllenCo Oil Production Facility (Los Angeles)​
HVI Cat Canyon State Abandonment​
Oil Field Surface Expressions
Aliso Canyon Storage Facility​
Aliso Canyon Storage Facility Document Repository
Aliso Canyon Updates and Resources
Aliso Canyon - Attachment B Documents
Test Results of Aliso Canyon Wells​​​​​​​​​​​​​​​
Aliso Canyon Safety Review
Aliso Canyon Safety Review Requirements
Marina del Rey Well Remediation​​

FAQs & Glossary

Geologic Energy Management - Drill Rig and Definitions​
Geologic Energy Managment - Drill Rig Terms
Geologic Energy Management Well Structure and Definitions
Geologic Energy Management Well Terms
Geologic Energy Management - Offshore Platform
Injection Wells - Frequently Asked Questions
Well Stimulation Treatment Glossary
Well Stimulation Treatment - Frequently Asked Questions​

California, Federal, Other State Agencies and Associations​