To strengthen the ability of scientists to track and respond to changes in Yellow- stone’s activity, the Yellowstone Volcano Observatory (YVO) was created here in 2001. YVO is a cooperative partnership between the US Geological Survey, National Park Service, University of Utah, University of Wyoming, University NAVSTAR Consortium and State Geological Surveys of Wyoming, Montana and Idaho. The observatory is a long-term, instrument-based monitoring program designed for observing volcanic and earthquake activity in the Yellowstone National Park region. assess the long-term potential hazards of volcanism, seismicity, and explosive hydrothermal activity in the region;