A Procedure To Define The Optimal Grid Size For
The Exhaustive Extraction Of Hydrologic
Watershed Drainage Features From A Digital
Elevation Model Using A Raster Geographic
Information System
Author(s)
D. Cluis, E. Quentin & G. Benie
Abstract
To study the fate of non-point source pollution and other spatial environmental
management problems, it is very convenient to generate and to exploit a
synthetic representation of the watershed describing the terrestrial and riverine
transportation paths of water and contaminants under the action of gravity within
a watershed. In raster mode, a drainage algorithm called D8 is often used to
identify the flow direction (aspect) from each cell to one of the eight adjacent
ones according to the steepest elevation gradient and then to generate the flow
accumulation defining a synthetic hydrographic network. Given a specific digital
elevation model (DEM), two parameters need to b
Keywords
Related Book
Other papers in this volume
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