Vincent Matthews and Lauren Heerschap Colorado Geological Survey Photographs from FEMA Photo Library

A Repeat of Colorado’s Largest Historical Earthquake

If a repeat of the 1882 M6.6 were to occur near Estes Park, we would have… $2.8 billion in economic losses statewide 35,000 buildings with moderate or higher damage 190 casualties requiring hospitalization 2,650 displaced households

If a M6.25 were to occur near the Rocky Mountain Arsenal today… $14.9 billion in economic losses statewide 152,000 buildings with moderate or higher damage 2,500 casualties requiring hospitalization 28,500 displaced households $5.6 billion loss in Denver County alone

Deterministic Scenarios for Known Faults Known faults that displace Miocene or younger strata and deposits

Known faults that displace Quaternary deposits

Faults and epicenters evaluated for this study 1882 Earthquake Rocky Mountain Arsenal Rampart Range Fault

golden Selected Hazus Scenario Results Golden Fault M 6.5$ 21.9 billion

Ute pass Selected Hazus Scenario Results Ute Pass Fault M 7.0$ 16.8 billion

rampart Selected Hazus Scenario Results Rampart Range Fault M 7.0$ 23.1 billion

cheraw Selected Hazus Scenario Results Cheraw Fault M 7.0$ 1.3 billion

N sangre Selected Hazus Scenario Results N Sangre de Cristo Fault M 7.5$ 8.0 billion

cannibal Selected Hazus Scenario Results Cannibal Fault M 7.0$ 675 million

Busted boiler Selected Hazus Scenario Results Busted Boiler Fault M 6.5$ 694 million

Roubideau Selected Hazus Scenario Results Roubideau Creek Fault M 5.5$ 94 million

cimarron Selected Hazus Scenario Results Cimarron Fault M 6.75$ 808 million

S Sawatch Selected Hazus Scenario Results South Sawatch Fault M 7.25$ 4.7 billion

mosquito Selected Hazus Scenario Results Mosquito Fault M 7.0$ 6.2 billion

frontal Selected Hazus Scenario Results Frontal Fault M 7.0$ 6.7 billion

Williams fork Selected Hazus Scenario Results Williams Fork Fault M 6.75$ 3.5 billion

The City that Waits