Spatial Coverage
- Anchorage Region2
- Beijing (China)2
- Berkeley County2
- Boulder County2
- Brooks Range2
- Camp Verde Indian Reservation2
- Camp Verde Indian Reservation (Ariz.)2
- Cochise County2
- Colorado River Watershed (Colo.-Mexico)2
- Connecticut2
- Elko County2
- EĢtats-Unis2
- Garfield County2
- Great Basin2
- Guadeloupe2
- Gulf Coast (U.S.)2
- Gunnison County2
- Guyana2
- Hudson River Watershed (N.Y. and N.J.)2
- Humboldt County2
