Geologic Hazards Mapping Project of the Uncompahgre River Valley Area, Montrose County, Colorado


Geologic Hazards Mapping Project of the Uncompahgre River Valley Area, Montrose County, Colorado

Geologic Hazards Mapping Project of the Uncompahgre River Valley Area, Montrose County, Colorado

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The purpose of this project is to improve Montrose County’s Mitigation Plan by identifying, describing, and analyzing the potential geologic hazards for private lands where development may occur in the future. The project area encompasses the Uncompahgre River valley and highlands to the east and west.

The map data includes GIS datasets mapped at 1:24,000 scale and digital cartographic maps on 1:50,000-scale topographic basemaps that are in Acrobat Portable Document Format (PDF) file formats. The following datasets are included in this digital publication:
1. The compiled 1:24,000-scale geologic map index of the project area
2. Compiled inventory of all mapped landslides
3. Landslide susceptibility map
4. Rockfall hazard map
5. Avalanche hazard map
6. Debris/mud flow hazard map
7. Swelling soil hazard rating map
8. Collapsible soil susceptibility map
9. Soil corrosion hazard map
10. Digital scans of georeferenced FEMA Flood Insurance Rate Maps (FIRMs)
11. Natural Resources Conservation Service (NRCS) flood hazard map
12. Compiled earthquake and Quaternary fault map with HAZUS earthquake-scenario modeling results
13. Poorly drained/salt pan area map
14. Mancos Shale and susceptibility for selenium impairment map
15. Slope classification map

A 76-page report is also included on this disc about the geologic hazards in the project area. This comprehensive report has chapters for all the geologic hazards listed above that includes an overview of the hazard, mapping methodology, and mapping results. Furthermore, for each potential hazard, there are specific discussions of risk assessment and hazard vulnerability, mitigation strategies, and development considerations and recommendations for future land-use planning.

Click Link to download the Report and GIS files:



Author(s): Jonathan L. White, TC Wait, and Matthew L. Morgan
Publication Type: Free Download
Published: 2011

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