Cascades Volcano Observatory
Volcanoes have been erupting in the Cascade Range for over 500,000 years. During the past 4,000 years eruptions have occurred at an average rate of about 2 per century.
This chart shows 13 volcanoes on a map of Washington, Oregon, and northern California and time lines for each showing the ages of their eruptions.
Download this report as a 24" x 20" PDF file (gip63.pdf; 168 kB)
For questions about this report, contact Carolyn Driedger.
Suggested citation and version history
| Help | Publications main page | Western General Information Products |
| Geology | Volcano Hazards Program |
This report is also available in print from:
USGS Information Services, Box 25286,
Federal Center, Denver, CO 80225
telephone: 888 ASK-USGS; e-mail: firstname.lastname@example.org