« Previous
Next »
Region
- Uinta Basin (Utah and Colo.)5
- Georgia4
- Utah3
- Appalachian Basin2
- ColoradoJackson County2
- ColoradoRoutt County2
- Fort Union Formation2
- Lebanon2
- Mississippi2
- Piceance Creek Basin (Colo.)2
- Powder River Basin (Wyo. and Mont.)2
- South America2
- South Asia2
- AlaskaAlaska Peninsula1
- AlaskaKenai Peninsula Borough1
- AlaskaMatanuska-Susitna Borough1
- Arizona1
- CaliforniaHoney Lake Watershed1
- CaliforniaLassen County1
- Colorado1