State of Conservation
Category of site
Cultural site Natural site Mixed site
Site inscribed on the List of World Heritage in Danger
Cultural site Natural site Mixed site
States Parties
United States of AmericaThreats
Invasive / alien freshwater species 15 Ground transport infrastructure 13 Impacts of tourism / visitor / recreation 13 Surface water pollution 11 Mining 10 Housing 7 Renewable energy facilities 7 Forestry /wood production 7 Oil and gas 7 Effects arising from use of transportation infrastructure 6 Input of excess energy 6 Air pollution 5 Management systems/ management plan 5
* :
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.