First, I created a flow_direction from a DEM, then I applied corrections to this flow direction. Now my question, how to create a flow network (order flow) from a flow direction, that I already corrected? What tool to use on ARC GIS: ArcToolbox > Spatial Analyst Tools> Hydrology> ....
There are a few more steps steps you must take.
- Use the Flow Accumulation (Spatial Analyst > Hydrology tools) tool to create a flow accumulation grid.
Create a stream network using the raster calculator tool (Spatial Analyst > Map Algebra). You should enter a funtion like:
SetNull("[Flow Accumulation Grid]<[flow accumulation threshold],1)
[brackets] should be substituted with appropriate variables.
You now have a stream network raster. You can use additional tools like Stream Link, Stream Order, and Stream to Feature (all under Spatial Analyst > Hydrology tools) to refine your results.