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Visibility Monitoring Locations


Visibility is monitored at 50 units of the National Park System. Each of the units shown in the map and table below have a particle monitor. (Denali and Grand Canyon National Parks each deploy two particle monitors.) Nephelometers are used in 9 parks while transmissometers are used in 19. The graphic below illustrates the different visibility monitoring located in the national parks. The map information in table format can be found in the table below the graphic.

US Visibility Monitoring Site Map

List of Visibility Monitoring Located within the National Park System

NP = National Park, NM = National Monument, NS = National Seashore
Site Name State Particle Monitor Nephelometer Transmissometer
Acadia NP ME X X X
Badlands NP SD X   X
Bandelier NM NM X   X
Big Bend NP TX X X X
Bryce Canyon NP UT X    
Canyonlands NP UT X   X
Cape Cod NS MA X    
Capitol Reef NP UT X    
Chiricahua NM AZ X   X
Crater Lake NP OR X   X
Craters of the Moon NM ID X    
Death Valley NP CA X    
Denali NP (2 sites) AK X    
Everglades NP FL X    
Gila Cliff Dwellings NM NM X X  
Glacier NP MT X   X
Grand Canyon NP AZ X X X
Great Basin NP NV X   X
Great Sand Dunes NM CO X    
Great Smoky Mountains NP TN X X  
Guadalupe Mountains NP TX X   X
Haleakala NP HI X    
Hawaii Volcanoes NP HI X    
Isle Royale NP MI X    
Joshua Tree NP CA X    
Lassen Volcanic NP CA X    
Lava Beds NM CA X    
Mammoth Cave NP KY X X  
Mesa Verde NP CO X X  
Mount Rainier NP WA X X  
North Cascades NP WA X    
Olympic NP WA X    
Organ Pipe Cactus NM AZ X    
Petrified Forest NP AZ X   X
Pinnacles NM CA X   X
Point Reyes NS CA X    
Redwood NP CA X    
Rocky Mtn NP CO X   X
Saguaro NP AZ X    
Sequoia NP CA X    
Shenandoah NP VA X X X
Theodore Roosevelt NP ND X    
Tonto NM AZ X   X
Virgin Islands NP VI X X  
Voyageurs NP MN X    
Washington DC DC X    
Wind Cave NP ND X    
Yellowstone NP WY X   X
Yosemite NP CA X   X
Zion NP UT X    
updated on 07/12/2007  I   http://www.nature.nps.gov/air/monitoring/vismonloc.cfm   I  Email: Webmaster