I used ArcHYDRO to prepare HydroDEM (5m) without sinks, Flow direction (FDR) raster, flow accumulation raster (FAC). As I understand FAC, value of pixel shows number of pixels that contribute to this pixel. Now, let say I derive drainage line from FAC (in raster form), I would like to link somehow all pixels that contribute to particular pixel in my drainage line, in way that I have separate contributing areas for each pixel in that drainage with clear relation to this pixel. How do I do that?
The main goal is to derive height difference between pixel in the drainge and any pixel that contribute to it and only to it.