Personal tools

Return to Top
DNRC Headquarters
1539 Eleventh Ave. Helena, MT 59601
Questions? Email us

Earthquake Hazard Maps


Probabilistic Earthquake Hazard Maps for the State of Montana

  1. Historical Seismicity Quat Faults Regional Source Zones
  2. (a) Quaternary Faults in Southhwestern Montana
    (b) Quaternary Faults in Northwestern Montana
  3. Distribution of Quaternary Basins and Site Response Units
  4. Depth to Tertiary Rock in Montana
  5. Peak Horizontal Acceleration on Rock 500 yr Return Period
  6. 0.2 Sec Horizontal Acceleration on Rock 500 yr Return Period
  7. 1 Sec Horizontal Acceleration on Rock 500 yr Return Period
  8. Peak Horizontal Acceleration on Rock 2500 yr Return Period
  9. 0.2 Sec Horizontal Acceleration on Rock 2500 yr Return Period
  10. 1 Sec Horizontal Acceleration on Rock 2500 yr Return Period
  11. Peak Horizontal Acceleration on Rock 5000 yr Return Period
  12. 0.2 Sec Horizontal Acceleration on Rock 5000 yr Return Period
  13. 1 Sec Horizontal Acceleration on Rock 5000 yr Return Period
  14. Peak Horizontal Acceleration on Surface 500 yr Return Period
  15. 0.2 Sec Horizontal Acceleration on Surface 500 yr Return Period
  16. 1 Sec Horizontal Acceleration on Surface 500 yr Return Period
  17. Peak Horizontal Acceleration on Surface 2500 yr Return Period
  18. 0.2 Sec Horizontal Acceleration on Surface 2500 yr Return Period
  19. 1 Sec Horizontal Acceleration on Surface 2500 yr Retrurn Period
  20. Peak Horizontal Acceleration on Surface 5000 yr Return Period
  21. 0.2 Sec Horizontal Acceleration on Surface 5000 yr Return Period
  22. 1 Sec Horizontal Acceleration on Surface 5000 yr Return Period
  23. Modal Magnitude for Peak Horizontal Acceleration on Rock 500 yr Return Period
  24. Modal Magnitude for Peak Horizontal Acceleration on Rock 2500 yr Return Period
  25. Modal Magnitude for Peak Horizontal Acceleration on Rock 5000 yr Return Period
  26. Modal Distance for Peak Horizontal Acceleration on Rock 500 yr Return Period
  27. Modal Distance for Peak Horizontal Accelertaion on Rock 2500 yr Return Period
  28. Modal Distance for Peak Horizontal Acceleration on Rock 5000 yr Return Period