Publisher
- California. Department of Fish and Game. Marine Resources Region216
- Geological Survey (U.S.)206
- California. Department of Water Resources123
- California. Department of Transportation60
- Sacramento County GIS35
- Fire and Resource Assessment Program (Calif.)20
- California. Office of Statewide Health Planning and Development17
- California. Air Resources Board13
- Bay Area Open Space Council9
- California. Metropolitan Transportation Commission5
- Cartography Associates5
- U.S. Census Bureau. Geography Division3
- United States. Environmental Protection Agency. Region IX3
- Wyoming Geographic Information Sciences Center3
- Gap Analysis Program (U.S.)2
- Humboldt County Planning and Building Department2
- California. Department of Parks and Recreation1
- California. Farmland Mapping and Monitoring Program1
- County of San Mateo Information Services Department1
- National Atlas of the United States1