The California Clearinghouse is managed by a consortium of 5 agencies:
- California Geological Survey
- California Office of Emergency Services
- California Seismic Safety Commission
- Earthquake Engineering Research Institute
- United States Geological Survey
Member organizations include:
- Applied Technology Council (ATC)
- California Department of Transportation (CALTRANS)
- California Geological Survey (CGS)
- California Office of Emergency Services (OES)
- California Institute of Technology (Caltech)
- California Seismic Safety Commission (CSSC)
- Consortium of Universities for Research in Earthquake Engineering (CUREE)
- Earthquake Engineering Research Institute (EERI)
- FEMA, Region IX
- NASA/Ames Research Center
- Pacific Earthquake Engineering Research Center (PEER)
- Southern California Earthquake Center (SCEC)
- Structural Engineers Association of California (SEAOC)
- Technical Council on Lifeline Earthquake Engineering (TCLEE/ASCE)
- UC Berkeley Seismological Laboratory (UCBSL)
- U.S. Geological Survey (USGS)
- Western Disaster Center (WDC)
- Western States Seismic Policy Council (WSSPC)