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Hello, I have a general question about sinks in Arc Hydro. I have a DEM and I am trying to impose known lakes and streams (in the form of shapefiles from the NHD dataset) into it. I am confused about what a sink really is. I understand that it is a low point in the DEM, so are all the lakes considered sinks? I am just a little confused about what a proper workflow would be. I am thinking it would be level the DEM, then burn in the streams, then fill sinks, then do a flow direction with sinks, using the lake shapefile as sinks? Any guidance would be appreciated greatly. Thanks,
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01-30-2014
10:15 AM
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Hello, I am having some trouble with the Batch Watershed Delineation for Polygons tool in ArcHydro. I am using data from the NHD Plus Version 2 data set, and arcgis 10.0 with the spatial analyst extension. Right now I have a flow direction grid, flow accumulation grid and the polygon I am intersted in finding the watershed for (a pond) loaded into the map. The tool will run and produce an output shapefile, but there is nothing in the attribute table of that output. I have everything in the same coordinate system. Does anybody have any suggestions as to why nothing is being produced? Or an alternative to this tool that might work better? Any advice would be greatly appreciated. Thank you
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10-10-2013
12:23 PM
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Hello, I am trying to burn a river into a DEM for a watershed delineation using archydro. This river is represented by a polygon however, not a linear feature. Is there a way to do this? I am using arcgis 10.0 with 3d analyst and spatial analyst extensions. Thank you
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10-08-2013
12:35 PM
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