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Home > Geologic Hazards > Earthquakes > Risks, Hazards & Loss > Potential Losses (HAZUS)
Potential Economic Losses - HAZUS Reports 
Imagine an earthquake centered in your city or town. 

Where would the most damage occur?  How much economic loss would there be?  How many casualties?

The Federal Emergency Management Agency (FEMA) has developed software (HAZUS) that models earthquakes in order to estimate potential loss and damage.

 
This interactive HAZUS Events Map details epicenters of possible future seismic events based on Maximum Credible Earthquakes (MCE) that have been assigned to specific faults by various entities.  Each of the event locations have been analyzed using FEMA HAZUS software and correspond to the HAZUS Reports - Statewide table below. Click on the map link or map image to view full size and select HAZUS events based on location.
The reports in the table below analyze potential earthquakes on faults across Colorado.   HAZUS software is used to analyze the MCE and magnitudes down to M5.5 on specific faults. The locations of possible future seismic events in this table correspond to the events detailed on the HAZUS Event Map above.  They show the total damage from an earthquake across county lines.

HAZUS Reports - Statewide
Location Epicenter Magnitude Report
1882 Rocky Mountain NP -105.74, 40.41 M6.6 Download
Busted Boiler Fault -107.86, 38.24 M6.5 Download
Cannibal Plateau -107.16, 37.94 M7.0 Download
Chase Gulch Fault -105.62, 39.00 M6.75 Download
Cheraw Fault -103.42, 38.28 M7.0 Download
Cimarron Fault -107.48, 38.41 M6.75 Download
Mosquito Range -106.16, 39.38 M7.0 Download
N Sangre De Cristo Fault -105.63, 37.90 M7.5 Download
N Sangre de Cristo PGA map M7.5 Download
N Sawatch Range Fault -106.39, 39.15 M7.0 Download
Rampart Range Fault -104.92, 39.06 M7.0 Download
Rocky Mountain Arsenal -104.90, 39.90 M6.0 Download
Rocky Mountain Arsenal -104.90, 39.90 M6.25 Download
S Sawatch Fault -106.18, 38.75 M7.25 Download
Ute Pass Fault -105.00, 38.92 M7.0 Download
Williams Fork Mountains -106.15, 39.87 M6.75 Download

The reports below have been generated for all Colorado counties using HAZUS software and specifying different earthquake magnitudes along known fault lines. The Worst-Case reports use the maximum magnitudes that can be generated along a fault of any given length, as calculated by Wells and Coppersmith (1994).  These reports inform policy makers, emergency managers and responders of the consequences of an earthquake within each county.  Counties can suffer damage even if the fault is located completely outside the county.  Because the scientists who generate the National Seismic Hazards Map recognize that we don't know as much as we would like about when or where an earthquake will strike, the USGS uses a "Random Earthquake" of magnitude 7.0.  Therefore, we ran a "Random Earthquake" scenario for each county with a magnitude 7.0 event essentially in the geographic center of each county.

HAZUS Reports - by County
 County    Worst-Case Results  Random Scenario 
Adams  Download  Download
Alamosa  Download  Download
Arapahoe  Download  Download
Archuleta  Download  Download
Baca  Download  Download
Bent  Download  Download
Boulder  Download  Download
Chaffee  Download  Download
Cheyenne  Download  Download
Clear Creek  Download  Download
   

Damaged residence in Segundo where the façade has crumbled and pulled away from the main structure during the Trinidad 5.3 Mw earthquake

County     Worst-Case Results Random Scenario
Conejos  Download  Download
Costilla  Download  Download
Crowley  Download  Download
Custer  Download  Download
Delta  Download  Download
Denver  Download  Download
Dolores  Download  Download
Douglas  Download  Download
Eagle  Download  Download
El Paso  Download  Download
Elbert  Download  Download
Fremont  Download  Download
Garfield  Download  Download
Gilpin  Download  Download
Grand  Download  Download
Gunnison  Download  Download
Hinsdale  Download  Download
Huerfano  Download  Download
Jackson  Download  Download
Jefferson  Download  Download
  Large bookcases were toppled over from the 5.3 Mw Trinidad earthqake. The resident reported S-N movement. Segundo, CO.  
County Worst-Case Results Random Scenario
Kiowa  Download  Download
Kit Carson  Download  Download
La Plata  Download  Download
Lake  Download  Download
Larimer  Download  Download
Las Animas  Download  Download
Lincoln  Download  Download
Logan  Download  Download
Mesa  Download  Download
Mineral  Download  Download
Moffat  Download  Download
Montezuma  Download  Download
Montrose  Download  Download
Morgan  Download  Download
Otero  Download  Download
Ouray  Download  Download
Park  Download  Download
Phillips  Download  Download
Pitkin  Download  Download
Prowers  Download  Download
Pueblo  Download  Download
County Worst-Case Results Random Scenario
Rio Blanco  Download  Download
Rio Grande  Download  Download
Routt  Download  Download
Saguache  Download  Download
San Juan  Download  Download
San Miguel  Download  Download
Sedgewick  Download  Download
Summitt  Download  Download
Teller  Download  Download
Washington  Download  Download
Weld  Download  Download
Yuma  Download  Download

REFERENCES:

Widmann, Beth L.and Kirkham, Robert M. and Rogers, William P. (1998), Preliminary Quaternary Fault and Fold Map and Database of Colorado; Colorado Geological Survey, Open-File Report 98-8

 Colorado Geological Survey
Last Updated: 3/27/2013 3:56 PM 
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