California Dairy & Livestock Database (CADD)

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To better understand emissions trends in the state's dairy sector, CARB staff developed the California Dairy and Livestock Database (CADD) using data from Federal, State, and Local agencies. The database contains facility-level cattle population and digester information for California dairies, dating back to 2012. CADD is based on publicly accessible documents and improves CARB's ability to track the California dairy and livestock sector trends.

For additional information, please contact CADD@arb.ca.gov.

Version 2 - Data Coverage: 2012-2023

  • CADD v2.0.0 (Published October 2025) - This version extends facility-level cattle population and digester data through 2023. It also incorporates anaerobic digester information from the publicly available LCFS Fuel Pathways dataset into the Anaerobic Digesters Table.

Version 1 - Data Coverage: 2012-2022

  • CADD v1.1.0(Published July 2025) - For enhanced transparency, two new columns have been added to the Facility Herd Size Table to indicate the basis for determining the herd size information. Additionally, the three CADD tables have been compiled into one Microsoft Office Excel Workbook.