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In hydrological modelling, flow direction shows the side the flow goes towards. Flow direction is used in spatial analysis to generate a drainage network by generating flow accumulation.

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Doing watershed delineation properly using ArcGIS Desktop?

I am using ArcGIS Desktop 10.2. I have the contours and the stream in AutoCAD Civil, after converting to a shapefile, I exported them in GIS, after I created the TIN from the contours below: n …
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