In 1995, the World Heritage Committee, with the agreement of the United States, placed Yellowstone National Park, a designated World Heritage site, on its List of World Heritage in Danger in response to specific threats it identified to the outstanding universal value of the park. At its 27th Session in July 2003, the Committee decided to remove the park from the Danger List. The reasons for this removal are outlined in the Yellowstone National Park Site Progress Report to the World Heritage Committee, October 2003.

The purpose of the Site Report is to continue to provide information to the World Heritage Committee on the original threats and the progress made towards resolving these issues in accordance with the Committee's request included in its decision to remove the park from the Danger List. The Site Report provides a synopsis of the current status of the six specific threats outlined in 7(b) of the Committee's decision.

A notice of availability of the Draft Site Progress Report to the World Heritage Committee was posted to the Federal Register on December 26, 2007. The public review period for comments on this document ended on January 25, 2008. All comments were reviewed by the National Park Service and transmitted in their entirety along with the final report to the UNESCO World Heritage Centre.