Estimating sediment yield in the southern Appalachians using WCS-SED

  • Authors: Bolstad, Paul; Jenks, Andrew; Riedel, Mark; Vose, James M.
  • Publication Year: 2006
  • Publication Series: Miscellaneous Publication
  • Source: In: Joint Federal Interagency Conference, Interdisciplinary solutions for watershed sustainability: 1-8

Abstract

We measured and modeled sediment yield over two months on five watersheds in the southern Appalachian Mountains of North Carolina. These watersheds contained first and second-order streams and are primarily forested, but span the development gradient common in this region, with up to 10 percent in suburban and transitional development and up to 27% low-intensity agriculture. Sediment yield was measured using automated pumped samplers, continuous depth measurements, and gravimetric analysis. Sediment yield was predicted using WCS-SED for the coincident period employing fine and medium-resolution elevation, soils, and land use data. Mean sediment yield varied from 0.025 to 0.344 t/ha/yr and was strongly related to the proportion of non-forest area in the watershed. Sediment yield was not related to road density within the watershed or in near stream areas. Predicted sediment yield was several times higher than observed sediment yield on four of five watersheds, with the most agriculturally developed watershed serving as the exception. Sediment yield was high over the plausible range of USLE land use and cropping factors that underlie the sediment yield predictions.

  • Citation: Bolstad, Paul; Jenks, Andrew; Riedel, Mark; Vose, James M. 2006. Estimating sediment yield in the southern Appalachians using WCS-SED. In: Joint Federal Interagency Conference, Interdisciplinary solutions for watershed sustainability: 1-8
  • Posted Date: December 22, 2006
  • Modified Date: July 23, 2007
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.