- North America8 objects
- The Americas8 objects
- United States8 objects
- California5 objects
- Central California2 objects
- Northern California2 objects
- Northwestern United States2 objects
- South Central California2 objects
- CA-CCo-138, Oakley, Contra Costa County1 objects
- Cassel, Shasta County, California1 objects
- Central Oregon1 objects
- Central Washington1 objects
- Colorado River, Southwestern United States1 objects
- Contra Costa County, California1 objects
- Klickitat County, Washington1 objects
- Lower Colorado River, Southwestern United States1 objects
- Madera County, California1 objects
- Mariposa County, California1 objects
- Mendocino County, California1 objects
- North Fork, Madera County, California1 objects