I will try my best to describe my question here: All the operations are done with ArcMap 10.1. I have a shapefile, which represent the stream segment network of a watershed produced from ArcHydro tool.
I need to break each stream segment into reaches with a fishnet using intersect tool. After the intersect operation, one single stream segment is represented by several reaches. However, the original stream segment has attributes named "from Node" and "to Node". After intersection, all reaches are seemly the same in attributes and I can't tell the sequence of them at all.
So how should I rebuild the direction information for these stream reaches?