I am trying to get a stream order network using spatial analyst. I have used the Stream order tool before and the result was a network with grid codes from 1 to 5. This time, with another DEM, I am only getting streams with grid code 1. I am using a flow direction raster and a flow accumulation raster (after Con tool, value > 1000) as inputs. In the flow accumulation con raster I can see all the streams, but after using the Stream Order tool some of these streams disappear. Please find the pictures attached. Do someone understand why I got this result?
Is it a symbology problem? - It appears to be mostly order 1 stuff.. ??
Another program/extension that works well for doing this is GeoHMS. You won't have to run any sort of manual raster calculations to get streams of a certain size, as the stream definition tool allows you to specify min drainage area.