Areas of Interest
Anadarko Basin
- Blaine
- Caddo
- Canadian
- Custer
- Dewey
- Ellis
- Grady
- Kingfisher
- McClain
- Roger Mills
Appalachian Basin
- Doddridge
- Gilmer
- Harrison
- Lewis
- Marion
- Monongalia
- Ritchie
- Tyler
- Wetzel
Delaware Basin
- Eddy
- Lea
- Loving
- Pecos
- Reeves
- Ward
DJ Basin
- Adams
- Arapahoe
- Larimer
- Weld
Powder River Basin
- Campbell
- Converse
- Johnson
- Niobrara
San Juan Basin
- Rio Arriba
- Sandoval
- San Juan
Uinta Basin
- Duchesne
- Uintah
Williston Basin
- Dunn
- McKenzie
- Mountrail
- Richland
- Roosevelt
- Williams
