2004 UC Proceedings Abstract
 Modeling Sub-Basin Scale Erosion Using DEMs and Land Use Grids Track: Water Resources Author(s): Lori Schnick Suspended sediment concentration is an important factor that affects stream ecology and morphology. To determine how urbanization will affect stream dynamics an understanding of sediment production and supply that results from increases in development is essential. The use of ArcGIS and Digital Elevation Models (DEMs) allows topographic analysis to be conducted on a watershed or sub-basin scale using the Arc Hydro extension and various techniques for watershed characterization. This study also looks at changes in time of land use patterns using land use grids and spatial analyst. Values obtained from the GIS are used as parameters in an erosion model. The model is calibrated to reflect land use variations, since observed sediment yields exist for the years that land use data is available. Lori Schnick University of Delaware Geology P.O. Box 831 Yorklyn , DE 19736 US Phone: 302-235-2275 E-mail: 83953@udel.edu |
|||||
