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I have a shapefile which contains the streams that were digitized from a satellite Image. I would like to calculate the stream order for this data. The data does not exactly match the DEM that I have, since the satellite image was of much higher resolution.

Is there any arcscript, code or readymade tool which I could use to calculate the stream orders?

I have Arcgis 10 with spatial & 3D analyst, as well as QGIS.

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1 Answer 1

up vote 4 down vote accepted

Check out the NVS Vector Stream Tool which ...

is a user-friendly ArcCatalog (9.3.x) Toolbox geoprocessing tool which simply assigns a numeric order to segments of a poly line feature class. Unlike the Spatial Analyst Tools for Hydrography, this tool solely uses vector stream data instead of raster stream data accompanied by a flow direction raster.

...

NVS Vector Stream Tool installers are available for both ArcGIS Desktop 10.0 and ArcGIS Desktop 9.3.1.

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Thanks! I will check that out. –  Devdatta Tengshe Apr 3 '12 at 16:58
    
It worked as I had wanted. There were just a few intermidatery steps that I had to do, like first export to a coverage, so that there would be from and to nodes. After that it worked in a jiffy. –  Devdatta Tengshe Apr 4 '12 at 5:53

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