Skip to Main Content
Erosion, sedimentation, and cumulative effects in the Northern Rocky MountainsAuthor(s): Walter F. Megahan; John G. King
Source: In: Ice, George G.; Stednick, John D., eds. A century of forest and wildland watershed lessons. Bethesda, Md.: Society of American Foresters: p. 201-222
Publication Series: Miscellaneous Publication
PDF: View PDF (1.1 MB)
DescriptionErosion and sedimentation are natural geomorphic processes characterized by large temporal and spatial variability. Recent radionuclide studies suggest that rare episodic events, such as large wildfires, produce massive sediment yields over time scales of thousands of years, thereby causing long-term average sediment production to exceed present-day average erosion rates by a factor of about 10. Even today, in undisturbed forested watersheds, sediment production is highly variable. Early studies of the effects of grazing and wildfire and surveys of river basins provided a foundation for much of the subsequent research on the effects of forest practices on erosion and sedimentation. The erosional and sedimentation effects of wildfire have been documented in many locations - ranging from none to minimal for low-intensity burns to catastrophic for highintensity burns. Management of forestlands to regulate the risk of wildfire effects on erosion and sedimentation is an important present-day concern throughout the region.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationMegahan, Walter F.; King, John G. 2004. Erosion, sedimentation, and cumulative effects in the Northern Rocky Mountains. In: Ice, George G.; Stednick, John D., eds. A century of forest and wildland watershed lessons. Bethesda, Md.: Society of American Foresters: p. 201-222
Keywordserosion, sedimentation, watersheds, forest management, residual effects, logging effects, erosion control, timber, harvesting, forest roads, temporal variability, wildfires, research needs, Idaho, Montana, Rocky Mountains
- Annotated bibliography on soil erosion and erosion control in subarctic and high-latitude regions of North America.
- Rill erosion rates in burned forests
- Soil erosion in humid regions: a review
XML: View XML