Journal ArticleDOI
The assignment of drainage direction over flat surfaces in raster digital elevation models
TLDR
In this paper, the authors proposed a new approach that improves upon current methods of flat surface treatment, based on the recognition that in natural landscapes drainage is generally away from higher and towards lower terrain, to produce a drainage pattern over the flat surface that is topographically consistent and exhibits flow convergence properties.About:
This article is published in Journal of Hydrology.The article was published on 1997-06-01. It has received 334 citations till now. The article focuses on the topics: Terrain & Drainage.read more
Citations
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Journal ArticleDOI
Toward a complete Himalayan hydrological budget: Spatiotemporal distribution of snowmelt and rainfall and their impact on river discharge
TL;DR: In this article, a combination of validated remotely-sensed climate parameters was used to characterize the spatiotemporal distribution of rainfall, snowfall, and evapotranspiration in order to quantify their relative contribution to mean river discharge.
Journal ArticleDOI
Height Above the Nearest Drainage – a hydrologically relevant new terrain model
Antonio Donato Nobre,Antonio Donato Nobre,Luz Adriana Cuartas,Martin G. Hodnett,Camilo Daleles Rennó,George Rodrigues,André Luiz Lopes da Silveira,M.J. Waterloo,Scott R. Saleska +8 more
TL;DR: The HAND model as mentioned in this paper normalizes topography according to the local relative heights found along the drainage network, and in this way, presents the topology of the relative soil gravitational potentials, or local draining potentials.
Journal ArticleDOI
An efficient method for identifying and filling surface depressions in digital elevation models for hydrologic analysis and modelling
Lei Wang,Hongxing Liu +1 more
TL;DR: A new method for efficiently identifying and filling surface depressions in DEMs is presented that can simultaneously determine flow paths and spatial partition of watersheds with one pass of processing and outperforms the conventional method by a factor of over 30.
Journal ArticleDOI
Digital terrain modeling
TL;DR: In this article, the state-of-the-art for a typical digital terrain modeling workflow that starts with data capture, continues with data preprocessing and DEM generation, and concludes with the calculation of one or more primary and secondary land surface parameters.
Journal ArticleDOI
Determination of the drainage structure of a watershed using a digital elevation model and a digital river and lake network
Richard Turcotte,Jean-Pierre Fortin,Alain N. Rousseau,Serge Massicotte,Jean-Pierre Villeneuve +4 more
TL;DR: In this article, a new approach, using a digital river and lake network (DRLN) as input in addition to the digital elevation model (DEM), has been developed, which allows an accurate fit between the DRLN and the modelled drainage structure, which is represented by a flow direction matrix and a modelled watercourse network.
References
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Journal Article
Extracting topographic structure from digital elevation data for geographic information-system analysis
TL;DR: In this paper, software tools have been developed at the U.S. Geological Survey's EROS Data Center to extract topographic structure and to delineate watersheds and overland flow paths from digital elevation models.
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Calculating catchment area with divergent flow based on a regular grid
TL;DR: In this paper, a new procedure is described for determining the catchment areas for all cells in a regular elevation grid, a problem of fundamental importance in analyzing drainage patterns, mineral deposition, erosion, and pollution in streams and groundwater.
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Drainage networks from grid digital elevation models
John Fairfield,Pierre Leymarie +1 more
TL;DR: In this article, the authors propose a simple solution to the problem: depth first search of the resulting drainage network permits segmentation of the digital elevation model into basins by various criteria, analysis of stream-sediment anomaly dilution profiles, improved hydrological models and other applications.
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Digital Elevation Model Networks (DEMON): A model of flow over hillslopes for computation of contributing and dispersal areas
TL;DR: A new model, called digital elevation model networks (DEMON), is presented, which avoids the above problems by representing flow in two dimensions and directed by aspect, and allows computation of both contributing and dispersal areas.
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Numerical definition of drainage network and subcatchment areas from digital elevation models
TL;DR: The primary purpose of the algorithms and computer program is to parameterize rapidly drainage network and subcatchment properties from widely available DEMs for subsequent use in hydrologic surface runoff models, watershed discretizations, or statistical and topological evaluation of drainage networks.