Designated Area
| Designation
| Classification
|
---|
Date
1
| Type
| Date
1
| Type
|
---|
Billings Area
| | | | |
Yellowstone County (part):
| | | | |
The following areas of Yellowstone Co. (Range and Township) sections: R25E T1N—Sections 24 through 27 and 34 through 36; R25E T1S—Sections 1, 2, and 12; R26E T1N Sections 19 through 22 and 27 through 34; R26E T1S Sections 2 through 11 and 15 through 18. | April 22, 2002. | Attainment
| | |
Great Falls Area | July 8, 2002 | Attainment
| | |
Cascade County (part)
| | | | |
Great Falls designated area: North boundary—9th Avenue South or its straight line extension; East boundary—54th Street South or its straight line extension; South boundary—11th Avenue South or its straight line extension; West boundary—2nd Street South or its straight line extension
| | | | |
Missoula Area:
| | | | |
Missoula County (part) | September 17, 2007 | Attainment
| | |
Missoula and vicinity including the following (Range and Township) sections: R19W T14N—sections: 29 and 32; R19W T13N—sections 2, 5, 7, 8, 11, 14 through 24, and 26 through 34; R19W T12N—sections: 4 through 7; R20W T13N—sections: 23 through 26, 35 and 36
| | | | |
Beaverhead County | | Unclassifiable/Attainment
| | |
Big Horn County (part)
excluding Crow, Northern Cheyenne Indian Reservations | | Unclassifiable/Attainment
| | |
Blaine County (part)
excluding Fort Belknap Indian Reservation | | Unclassifiable/Attainment
| | |
Broadwater County | | Unclassifiable/Attainment
| | |
Carbon County | | Unclassifiable/Attainment
| | |
Carter County | | Unclassifiable/Attainment
| | |
Cascade County (part)
| | | | |
Remainder of Cascade County | | Unclassifiable/Attainment
| | |
Chouteau County (part)
excluding Rocky Boy Indian Reservation | | Unclassifiable/Attainment
| | |
Custer County | | Unclassifiable/Attainment
| | |
Daniels County (part)
excluding Fort Peck Indian Reservation | | Unclassifiable/Attainment
| | |
Dawson County | | Unclassifiable/Attainment
| | |
Deer Lodge County | | Unclassifiable/Attainment
| | |
Fallon County | | Unclassifiable/Attainment
| | |
Fergus County | | Unclassifiable/Attainment
| | |
Flathead County (part)
excluding Flathead Indian Resevation | | Unclassifiable/Attainment
| | |
Gallatin County | | Unclassifiable/Attainment
| | |
Garfield County | | Unclassifiable/Attainment
| | |
Glacier County (part)
excluding Blackfeet Indian Reservation | | Unclassifiable/Attainment
| | |
Golden Valley County | | Unclassifiable/Attainment
| | |
Granite County | | Unclassifiable/Attainment
| | |
Hill County (part)
excluding Rocky Boy Indian Reservation | | Unclassifiable/Attainment
| | |
Jefferson County | | Unclassifiable/Attainment
| | |
Judith Basin County | | Unclassifiable/Attainment
| | |
Lake County (part)
excluding Flathead Indian Reservation | | Unclassifiable/Attainment
| | |
Lewis and Clark County | | Unclassifiable/Attainment
| | |
Liberty County | | Unclassifiable/Attainment
| | |
Lincoln County | | Unclassifiable/Attainment
| | |
Madison County | | Unclassifiable/Attainment
| | |
McCone County | | Unclassifiable/Attainment
| | |
Meagher County | | Unclassifiable/Attainment
| | |
Mineral County | | Unclassifiable/Attainment
| | |
Missoula County (part)
| | | | |
Remainder of Missoula County | | Unclassifiable/Attainment
| | |
Musselshell County | | Unclassifiable/Attainment
| | |
Park County | | Unclassifiable/Attainment
| | |
Petroleum County | | Unclassifiable/Attainment
| | |
Phillips County (part)
excluding Fort Belknap Indian Reservation | | Unclassifiable/Attainment
| | |
Pondera County (part)
excluding Blackfeet Indian Reservation | | Unclassifiable/Attainment
| | |
Powder River County | | Unclassifiable/Attainment
| | |
Powell County | | Unclassifiable/Attainment
| | |
Prairie County | | Unclassifiable/Attainment
| | |
Ravalli County | | Unclassifiable/Attainment
| | |
Richland County | | Unclassifiable/Attainment
| | |
Roosevelt County (part)
excluding Fort Peck Indian Reservation | | Unclassifiable/Attainment
| | |
Rosebud County (part)
excluding Northern Cheyenne Indian Reservation | | Unclassifiable/Attainment
| | |
Sanders County (part)
excluding Flathead Indian Reservation | | Unclassifiable/Attainment
| | |
Sheridan County (part)
excluding Fort Peck Indian Reservation | | Unclassifiable/Attainment
| | |
Silver Bow County | | Unclassifiable/Attainment
| | |
Stillwater County | | Unclassifiable/Attainment
| | |
Sweet Grass County | | Unclassifiable/Attainment
| | |
Teton County | | Unclassifiable/Attainment
| | |
Toole County | | Unclassifiable/Attainment
| | |
Treasure County | | Unclassifiable/Attainment
| | |
Valley County (part)
excluding Fort Peck Indian Reservation | | Unclassifiable/Attainment
| | |
Wheatland County | | Unclassifiable/Attainment
| | |
Wibaux County | | Unclassifiable/Attainment
| | |
Yellowstone County (part)
| | | | |
Remainder of Yellowstone County | | Unclassifiable/Attainment
| | |
Yellowstone National Park | | Unclassifiable/Attainment
| | |
Blackfeet Indian Reservation | | Unclassifiable/Attainment
| | |
Glacier County (part)
| | | | |
area inside Blackfeet Reservation
| | | | |
Pondera County (part)
| | | | |
area inside Blackfeet Reservation
| | | | |
Crow Indian Reservation | | Unclassifiable/Attainment
| | |
Bighorn County (part)
| | | | |
area inside Crow Reservation
| | | | |
Yellowstone (part)
| | | | |
area inside Crow Reservation
| | | | |
Flathead Indian Reservation | | Unclassifiable/Attainment
| | |
Flathead County (part)
| | | | |
area inside Flathead Reservation
| | | | |
Lake County (part)
| | | | |
area inside Flathead Reservation
| | | | |
Missoula County (part)
| | | | |
area inside Flathead Reservation
| | | | |
Sanders County (part)
| | | | |
area inside Flathead Reservation
| | | | |
Fort Belknap Indian Reservation | | Unclassifiable/Attainment
| | |
Blaine County (part)
| | | | |
area inside Fort Belknap Reservation
| | | | |
Phillips County (part)
| | | | |
area inside Fort Belknap Reservation
| | | | |
Fort Peck Indian Reservation | | Unclassifiable/Attainment
| | |
Daniels County (part)
| | | | |
area inside Fort Peck Reservation
| | | | |
Roosevelt County (part)
| | | | |
area inside Fort Peck Reservation
| | | | |
Sheridan County (part)
| | | | |
area inside Fort Peck Reservation
| | | | |
Valley County (part)
| | | | |
area inside Fort Peck Reservation
| | | | |
Northern Cheyenne Indian Reservation | | Unclassifiable/Attainment
| | |
Bighorn County (part)
| | | | |
area inside Northern Cheyenne Reservation
| | | | |
Rosebud County (part)
| | | | |
area inside Northern Cheyenne Reservation
| | | | |
Rocky Boy Indian Reservation | | Unclassifiable/Attainment
| | |
Chouteau County (part)
| | | | |
area inside Rocky Boy Reservation
| | | | |
Hill County (part)
| | | | |
area inside Rocky Boy Reservation
| | | | |