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dc.contributor.supervisor Kienzle, Stefan W. Duke, Guy D. University of Lethbridge. Faculty of Arts and Science 2007-05-12T20:00:20Z 2007-05-12T20:00:20Z 2003
dc.description vii, 170 leaves : ill. (some col.) ; 29 cm. en
dc.description.abstract Grid-based digital elevation models (DEMs) are used to simulate overland flow paths in hydrological models. The accuracy of these drainage patterns are dependent upon how well the DEM represents the terrain features that control runoff patterns. Often regional DEMs are not produced at scales small enough to represent rural infrastructure. The scale of runoff patterns that can be accurately modeled is, therefore, restricted, particularly when the terrain is relatively flat. The RIDEM (Rural Infrastructure Digital Elevation Model) model is presented that utilizes commonly available ancillary data to downscale grid-based runoff patterns. The resulting drainage patterns reflect drainage modifications imposed by rural infrastructure including: roads, ditches, culverts, and irrigation canals. Downscaling runoff patterns enables the completion of runoff studies at smaller scales. The model was implemented with the Oldman River watershed, Alberta, Canada to determine the spatial patterns of potential runoff contributing areas in three agricultural watersheds regularly contaminated by pathogens. en
dc.language.iso en_US en
dc.publisher Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2003 en
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en
dc.subject Dissertations, Academic en
dc.subject Geographic information systems en
dc.subject Watershed management -- Alberta -- Oldman River watershed en
dc.subject Watersheds -- Alberta en
dc.subject Runoff -- Alberta -- Oldman River Basin en
dc.title A GIS expert system for the delineation of watersheds in low-relief regions with rural infrastructure en
dc.type Thesis en
dc.publisher.faculty Arts and Science
dc.publisher.department Department of Geography Masters

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