Spatial Coverage
- United States4
- Washington County4
- Webster County4
- West Virginia4
- Anderson County3
- Atlantic Coast (Africa)3
- Caribbean Area3
- Caribbean Sea.3
- Custer County3
- El Paso County3
- Elbert County3
- Floridan Aquifer3
- Franklin County3
- Front Range (Colo. and Wyo.)3
- Grant County3
- Hopkins County3
- Jefferson County3
- Knox County3
- Michigan3
- Nelson County3
