NPS Class I Areas

There are 48 units of the National Park System with Class I areas. In some cases only the wilderness portion of a unit is designated as Class I, because that section met the designation criteria in 1977 when the Clean Air Act was amended. In addition, there is one Class I area that the NPS co-manages with Canada as an international park.

Main Page for Class I Areas
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

A

• Acadia National Park (ME)
• Arches National Park (UT)

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B

• Badlands National Park (SD)
• Bandelier National Monument (NM)
• Big Bend National Park (TX)
• Black Canyon of the Gunnison National Park (CO)
• Bryce Canyon National Park (UT)

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C

• Canyonlands National Park (UT)
• Capitol Reef National Park (UT)
• Carlsbad Caverns National Park (NM)
• Chiricahua National Monument (AZ)
• Crater Lake National Park (OR)
• Craters of the Moon National Monument (ID)

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D

• Denali National Park and Preserve (AK)

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E

• Everglades National Park (FL)

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G

• Glacier National Park (MT)
• Grand Canyon National Park (AZ)
• Grand Teton National Park (WY)
• Great Sand Dunes National Monument (CO)
• Great Smoky Mountains National Park (TN/NC)
• Guadalupe Mountains National Park (TX)

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H

• Haleakala National Park (HI)
• Hawaii Volcanoes National Park (HI)

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I

• Isle Royal National Park (MI)

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J

• Joshua Tree National Park (CA)

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K

• Kings Canyon National Park (CA)

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L

• Lassen Volcanic National Park (CA)
• Lava Beds National Monument (CA)

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M

• Mammoth Cave National Park (KY)
• Mesa Verde National Park (CO)
• Mount Rainier National Park (WA)

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N

• North Cascades National Park (WA)

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O

• Olympic National Park (WA)

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P

• Petrified Forest National Park (AZ)
• Pinnacles National Monument (CA)
• Point Reyes National Seashore (CA)

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R

• Redwood National Park (CA)
• Rocky Mountain National Park (CO)
• Roosevelt Campobello International Park (ME/CANADA)
  • Note: This area is jointly administered by the USA and Canada

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S

• Saguaro National Park (AZ)
• Sequoia National Park (CA)
• Shenandoah National Park (VA)

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T

• Theodore Roosevelt National Park (ND)

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V

• Virgin Islands National Park (VI)
• Voyageurs National Park (MN)

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W

• Wind Cave National Park (SD)

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Y

• Yellowstone National Park (WY/MT/ID)
• Yosemite National Park (CA)

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Z

• Zion National Park (UT)

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