- Anderson, Robert M.2
- Armstrong, Andrew2
- Armstrong, Jake H.1
- Bay Area Open Space Council4
- Bienhoff, Paul2
- Bretz, Carrie K.9
- Calaveras County GIS3
- California Geological Survey2
- California. Department of Conservation3
- California. Department of Fish and Game. Marine Resources Region5
- California. Department of Water Resources72
- California. Division of Mines and Geology3
- Camerlenghi, A. (Angelo)2
- Canada Centre for Mapping2
- Chin, John L.2
- Church, Ian2
- Coakley, Bernard2
- Coastal and Marine Geology Program (Geological Survey)1
- Cochrane, Guy R.4
- Conrad, Jamie E.3