Skip to Main Content
Modeling stream-bank erosion in the Southern Blue Ridge MountainsAuthor(s): James C. Rogers; David S. Leigh
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
PDF: Download Publication (564.35 KB)
DescriptionDeforestation, followed by soil erosion and subsequent deposition of alluvium in valleys, played a critical role in the formation of historical terraces in much of the Southern Blue Ridge Mountains. Such terraces add a significant amount of sediment to the tributaries of the region as streams laterally erode the terrace banks. This study examined the contribution of total sediment yield derived solely from eroded stream banks in small watersheds (<20 km²), using floodplain widths as proxies for long-term lateral erosion rates. The raw data were derived from watersheds with different land covers (Coweeta Creek and Skeenah Creek watersheds in the Upper Little Tennessee River basin). Bank-derived sediment yield estimates were modeled in a Geographic Information System, using linear regression to relate floodplain widths and erodible terrace bank heights. We found total stream length to be a good predictor of both lateral erosion rates and erodible bank heights. Land cover, basin/network morphometrics, and reach-scale stream conditions were not good predictors. Modeled lateral migration and sediment yield results compare favorably to empirical measurements from five independent watersheds in the region. Modeled estimates fall within ±50% or better of the observed values, at 16.33 to 25.02 t km−2 yr−1.
- 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.
CitationRogers, James C.; Leigh, David S. 2013. Modeling stream-bank erosion in the Southern Blue Ridge Mountains. Physical Geography. 34: 4-5. 354-372.
- Soil erosion and management activities on forested slopes
- Application of the unit stream power erosion and deposition model at Eglin Air Force Base, Florida
- Recent findings related to measuring and modeling forest road erosion
XML: View XML