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Proceedings Paper

Landsat Thematic Mapper and Geographic Information System for sediment delivery analysis under the two modes of runoff dispersion
Author(s): Narayan B. Rajbhandari; Ahmed Fahsi; Tommy L. Coleman; George Brown; Teferi D. Tsegaye; Wubishet Tadesse; Phil Cannon
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Paper Abstract

The purpose of this study was to assess the two modes of runoff dispersion in order to determine effective management practices to control the sediment delivery rate from a critical portion of the Flint River Watershed in Alabama, USA. The two modes of dispersion were natural storm flow and dispersed storm flow. A 1997 Landsat TM image of the watershed was classified to produce a land use map using a supervised classification technique. Based on the classification, a critical sub-watershed was selected for this study. Using a Geographic Information System (GIS), the storm flow directions under the two modes of dispersion were identified. The model, Areal Non-point Source Watershed Environment Response Simulator (ANSWERS), was then simulated for a one-year return period storm event to compare the sediment yield during the two modes of runoff dispersion. The sediment yield from the selected sub-watershed averaged a reduction of 20% during the dispersed mode.

Paper Details

Date Published: 17 December 1999
PDF: 7 pages
Proc. SPIE 3868, Remote Sensing for Earth Science, Ocean, and Sea Ice Applications, (17 December 1999); doi: 10.1117/12.373114
Show Author Affiliations
Narayan B. Rajbhandari, Alabama A&M Univ. (United States)
Ahmed Fahsi, Alabama A&M Univ. (United States)
Tommy L. Coleman, Alabama A&M Univ. (United States)
George Brown, Alabama A&M Univ. (United States)
Teferi D. Tsegaye, Alabama A&M Univ. (United States)
Wubishet Tadesse, Alabama A&M Univ. (United States)
Phil Cannon, Boise Cascade Corp. (United States)


Published in SPIE Proceedings Vol. 3868:
Remote Sensing for Earth Science, Ocean, and Sea Ice Applications
Giovanna Cecchi; Edwin T. Engman; Eugenio Zilioli, Editor(s)

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