Seismicity map of the state of Colorado

Miscellaneous Field Studies Map 2036
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This map is one of a series of seismicity maps produced by the U.S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000.  This map shows only those earthquakes with epicenters located within the boundaries of Colorado, even though earthquakes in nearby states may have been felt or may have caused damage in Colorado.

The data in table 1 were used to compile the seismicity map; these data are a corrected, expanded, and updated (through 1987) version of the data used by Algermissen (1969) for a study of seismic risk in the United States. The locations and intensities of some earthquakes were revised and intensities were assigned where none had been before. Many earthquakes were added to the original list from new data sources as well as from some old data sources that has not been previously used. The data in table 1 represent best estimates of the location of the epicenter, magnitude, and intensity of each earthquake on the basis of historical and current information. Some of the aftershocks from large earthquakes are listed, but not all, especially for earthquakes that occurred before seismic instruments were universally used.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Seismicity map of the state of Colorado
Series title Miscellaneous Field Studies Map
Series number 2036
DOI 10.3133/mf2036
Year Published 1988
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Description 44.80 x 37.70 inches
Country United States
State Colorado
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