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Impacts of Woody Debris on Fluvial Processes and Channel Morphology in Stable and Unstable Streams. Contract Modification for the use of Geographical Information Systems as a Tool for Management of Woody Debris in DEC Watersheds,

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This project is based on the work of the Demonstration Erosion Control Project carried out by the U.S. Army Corps of Engineers in the Mississippi regions of the United States. The project demonstrates how a GIS ARCINFO can be used in conjunction with external programming to assist in management practices associated with erosion control. The GIS is used to calculate variables of soil type, land use, and sub-watershed area which are the input variables into a C management program, for selected sections of streams in the Abiaca Watershed, Mississippi. The operation of the project is set up so as to facilitate interactive selection of stream sections anywhere within the watershed. The soil type and land use variables are calculated by combining polygon coverages and overlaying them with a stream network. The watershed areas are calculated through the use of a Digital Elevation Model, which was also used to derive the stream network. The C management program predicts the likelihood of floating debris build up at any selected section on a particular stream. The system macro language AML of the GIS is used to automate the various analysis techniques used in this project. A pull down type menu interface is used to create an interactive user environment which is simple to use and guides the user through the steps necessary to obtain management help. The project is a pilot to establish whether a GIS is suitable for such a task. MM

Subject Categories:

  • Hydrology, Limnology and Potamology
  • Computer Systems

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