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Open-File Report 2007–1289

Prepared in cooperation with the Association of Environmental & Engineering Geologists

Mass Wasting Following the 2002 Missionary Ridge Fire near Durango, Colorado, a Field Trip Guidebook

By Jeffrey A. Coe (editor), Erica R. Bigio, Robert W. Blair, Jr., Michael Burke, Susan H. Cannon, Victor G. deWolfe, John Ey, Joseph E. Gartner, Mary L. Gillam, N.D. (Butch) Knowlton, Paul M. Santi, and William H. Schulz

Association of Environmental & Engineering Geologists Special Publication No. 20

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Abstract

This field trip guide focuses on mass wasting following the 2002 Missionary Ridge fire near Durango, Colorado. We prepared this guide to accompany a May 4, 2006, field trip during the second Roy J. Shlemon Specialty Conference, which was held in Durango, Colorado, May 3−5. The conference, entitled Mass Wasting in Disturbed Watersheds, was sponsored by the Association of Environmental & Engineering Geologists (AEG) and the AEG Foundation. The objective of this Shlemon Conference was to bring together practitioners and researchers to define the current state of practice and identify unresolved problems with regard to the prediction and mitigation of mass wasting in disturbed watersheds. The one-day field trip begins and ends in Durango. Many of the field trip stops are at debris-flow fans around the periphery of the burn area, but one stop examines landslide activity in the burn area that initiated during spring 2005 snowmelt within a dormant, deep-seated landslide, as well as an erosion/debris-flow mitigation effort in a drainage basin above Lemon Reservoir. Also provided are descriptions of the Missionary Ridge fire, the geologic and climatic setting of the field-trip area, and the general effects of wildfire on watersheds.

Version 1.0

Posted October 2007


Suggested citation:

Coe, J.A. (editor), Bigio, E. R., Blair, R.W., Jr., Burke, M., Cannon, S.H., deWolfe, V.G., Ey, J., Gartner, J.E., Gillam, M.L., Knowlton, N.D., Santi, P.M., and Schulz, W.H., Mass wasting following the 2002 Missionary Ridge fire near Durango, Colorado, a field trip guidebook: U.S. Geological Survey Open File Report 2007-1289, 54 p.



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