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- W2052610040 abstract "The detailed topographic information contained in light detection and ranging (LiDAR) digital elevation models (DEMs) can present significant challenges for modelling surface drainage patterns. These data frequently represent anthropogenic infrastructure, such as road embankments and drainage ditches. While LiDAR DEMs can improve estimates of catchment boundaries and surface flow paths, modelling efforts are often confounded difficulties associated with incomplete representation of infrastructure. The inability of DEMs to represent embankment underpasses (e.g. bridges, culverts) and the problems with existing automated techniques for dealing with these problems can lead to unsatisfactory results. This is often dealt with by manually modifying LiDAR DEMs to incorporate the effects of embankment underpasses. This paper presents a new DEM pre-processing algorithm for removing the artefact dams created by infrastructure in sites of embankment underpasses as well as enforcing flow along drainage ditches. The application of the new algorithm to a large LiDAR DEM of a site in Southwestern Ontario, Canada, demonstrated that the least-cost breaching method used by the algorithm could reliably enforce drainage pathways while minimizing the impact to the original DEM." @default.
- W2052610040 created "2016-06-24" @default.
- W2052610040 creator A5023512242 @default.
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- W2052610040 date "2015-03-02" @default.
- W2052610040 modified "2023-10-07" @default.
- W2052610040 title "Modelling surface drainage patterns in altered landscapes using LiDAR" @default.
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- W2052610040 doi "https://doi.org/10.1080/13658816.2014.975715" @default.
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