Skip Links

USGS - science for a changing world

Fact Sheet 2013–3114

Landslides in the Northern Colorado Front Range Caused by Rainfall, September 11–13, 2013

By Jonathan W. Godt, Jeffrey A. Coe, Jason W. Kean, Rex L. Baum, Eric S. Jones, Edwin L. Harp, Dennis M. Staley, and William D. Barnhart

Thumbnail of and link to report PDF (19.4 MB)Abstract

During the second week of September 2013, nearly continuous rainfall caused widespread landslides and flooding in the northern Colorado Front Range. The combination of landslides and flooding was responsible for eight fatalities and caused extensive damage to buildings, highways, and infrastructure. Three fatalities were attributed to a fast moving type of landslide called debris flow. One fatality occurred in Jamestown, and two occurred in the community of Pinebrook Hills immediately west of the City of Boulder. All major canyon roads in the northern Front Range were periodically closed between September 11 and 13, 2013. Some canyon closures were caused by undercutting of roads by landslides and flooding, and some were caused by debris flows and rock slides that deposited material on road surfaces. Most of the canyon roads, with the exceptions of U.S. Highway 6 (Clear Creek Canyon), State Highway 46/Jefferson Co. Rd. 70 (Golden Gate Canyon), and Sunshine Canyon in Boulder County, remained closed at the end of September 2013. A review of historical records in Colorado indicates that this type of event, with widespread landslides and flooding occurring over a very large region, in such a short period of time, is rare.

First posted January 21, 2014

For additional information contact:
National Landslide Information Center
U.S. Geological Survey
Federal Center, Box 25046, MS 966
Denver, CO 80225
http://landslides.usgs.gov/

Part or all of this report is presented in Portable Document Format (PDF). For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader. PDF documents opened from your browser may not display or print as intended. Download the latest version of Adobe Reader, free of charge.


Suggested citation:

Godt, J.W., Coe, J.A., Kean, J.W., Baum, R.L., Jones, E.S., Harp, E.L., Staley, D.M., and Barnhart, W.D., 2014, Landslides in the northern Colorado Front Range caused by rainfall, September 11–13, 2013: U.S. Geological Survey Fact Sheet 2013–3114, 6 p., https://dx.doi.org/10.3133/fs20133114.

ISSN 2327-6916 (print)

ISSN 2327-6932 (online)



Contents

What did the U.S. Geological Survey do?

Findings

Ongoing Hazards


Accessibility FOIA Privacy Policies and Notices

USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: https://pubs.usgs.gov/fs/2013/3114/
Page Contact Information: Contact USGS
Page Last Modified: Tuesday, November 29, 2016, 05:51:02 PM