Arkansas vs Colorado Earthquake Risk

Arkansas has a higher earthquake risk with a score of 5/10 (Moderate) compared to Colorado at 4/10 (Moderate). This means Arkansas faces more frequent and potentially more destructive seismic events.

Arkansas averages approximately 40 earthquakes per year, while Colorado averages about 50 per year. Colorado experiences roughly 10 more earthquakes annually.

Arkansas is associated with New Madrid Seismic Zone (NE corner). Colorado is associated with Rio Grande Rift. These fault systems determine the type and frequency of seismic activity each state experiences.

In Arkansas, approximately 20% of the population lives in areas at risk from earthquakes, compared to 25% in Colorado. Colorado has a larger percentage of residents exposed to seismic hazard.

Arkansas's most notable earthquake: 1811 New Madrid (epicenter nearby). Colorado's most notable earthquake: 1882 Northern Colorado (M6.6). These historical events illustrate the seismic potential of each state.