Publisher
- California. Department of Water Resources122
- International Steering Committee for Global Mapping88
- California Geological Survey35
- Bay Area Open Space Council30
- U.S. Geological Survey28
- Geological Survey (U.S.)22
- North American Cartographic Information Society22
- United States. Bureau of the Census. Geography Division20
- GLIMS19
- California. Division of Mines and Geology17
- County of Santa Cruz Information Services Department17
- United States. National Geospatial-Intelligence Agency13
- Jasper Ridge Biological Preserve (Agency)12
- Sierra Nevada Conservancy12
- Santa Clara Valley Water District (Calif.)11
- Humboldt County Planning and Building Department7
- Monterey County (Calif.)7
- United States. Bureau of Transportation Statistics7
- California. Department of Fish and Game. Marine Resources Region6
- National Atlas of the United States6