State of Conservation (SOC)

• Yellowstone National Park (2012)
  United States of America
  Year: 2012
  Threats*: Ground transport infrastructure, Effects arising from use of transportation infrastructure, Surface water pollution, Air pollution, Input of excess energy, Mining, Impacts of tourism/visitor/recreation, Invasive / alien freshwater species, Management systems/ management plan,
  Document Source: WHC-12/36.COM/7B
  

• Yellowstone National Park (2010)
  United States of America
  Year: 2010
  Threats*: Ground transport infrastructure, Effects arising from use of transportation infrastructure, Surface water pollution, Air pollution, Input of excess energy, Mining, Impacts of tourism/visitor/recreation, Invasive / alien freshwater species, Management systems/ management plan,
  Document Source: WHC-10/34.COM/7B
  

• Yellowstone National Park (2008)
  United States of America
  Year: 2008
  Threats*: Ground transport infrastructure, Effects arising from use of transportation infrastructure, Surface water pollution, Air pollution, Input of excess energy, Mining, Impacts of tourism/visitor/recreation, Invasive / alien freshwater species, Management systems/ management plan,
  Document Source: WHC-08/32.COM/7B
  

• Yellowstone National Park (2006)
  United States of America
  Year: 2006
  Threats*: Ground transport infrastructure, Effects arising from use of transportation infrastructure, Air pollution, Input of excess energy, Mining, Invasive / alien freshwater species,
  Document Source: WHC-06/30.COM/7B
  

• Yellowstone National Park (2005)
  United States of America
  Year: 2005
  Threats*: Ground transport infrastructure, Effects arising from use of transportation infrastructure, Air pollution, Input of excess energy, Mining, Invasive / alien freshwater species,
  Document Source: WHC-05/29.COM/7B.Rev
  

• Yellowstone National Park (2004)
  United States of America
  Year: 2004
  Threats*: Ground transport infrastructure, Effects arising from use of transportation infrastructure, Surface water pollution, Input of excess energy, Mining, Impacts of tourism/visitor/recreation, Invasive / alien freshwater species,
  Other Threats: Brucella infection threat to bison population
  Document Source: WHC-04/28.COM/15B.Add
  

• Yellowstone National Park (1989)
  United States of America
  Year: 1989
  Threats*:
  Other Threats: Fire
  Document Source: SC.89/CONF.003/02,SC.89/CONF.004/05
  

• Yellowstone National Park (1988)
  United States of America
  Year: 1988
  Threats*:
  Other Threats: Fire
  Document Source: SC.88/CONF.001/13
  

* : The threats indicated are listed in alphabetical order; their order does not constitute a classification according to the importance of their impact on the property.
Furthermore, they are presented irrespective of the type of threat faced by the property, i.e. with specific and proven imminent danger (“ascertained danger”) or with threats which could have deleterious effects on the property’s Outstanding Universal Value (“potential danger”).

** : All mission reports are not always available electronically.