The USGS assesses each volcano against a 24-factor hazard and exposure matrix, and assigns a threat level of very low, low, moderate, high, or very high. In 2018, 18 volcanoes were rated as very high risk, and 39 volcanoes were rated as high risk. The very high risk volcanoes are in Alaska, Washington, Oregon, California, and Hawaii, with the most dangerous being Kilauea. Some volcano monitoring has been performed by the Volcano Hazards Program, directed by the USGS, but the program lacks sufficient funding to properly close the monitoring gap. According to Charles Mandeville, the program coordinator for the USGS Volcano Hazards Program, the USGS is somewhere between 30-40 percent of the way to having an ideal monitoring network for those volcanoes. As of 2018, only three very high risk volcanoes are categorized as well monitored: Kilauea, Mount St. Helens, and Long Valley Caldera.