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Terrain Processing using ArcHydro/GeoHMS

Terrain Processing using ArcHydro/GeoHMS . Prepared by Venkatesh Merwade School of Civil Engineering, Purdue University February 2019. Introduction The first step in doing any kind of hydrologic modeling involves delineating streams and watersheds, and getting some basic watershed properties such as area, slope, flow length, stream network density, etc. Traditionally this was (and still is!) being done manually by using topographic/contour maps. With the availability of digital elevation models (DEM) and GIS. tools, watershed properties can be extracted by using automated procedures.

tools, watershed properties can be extracted by using automated procedures. The processing of DEM to delineate watersheds is referred to as terrain pre-processing. There are several tools available online for terrain pre-processing, including the Hydrology geo-processing tools in …

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  Processing, Automated, Archydro

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