I want to get the upstream distance to all points in a DEM from a single downstream point. The goal is to create a "downstream distance to a point grid". This then would allow me to create "distance" contours upstream from a point in the watershed.
I tried using the Raster Calculator with this equation:
Outras = Con("Fdr" == 1,16,Con("Fdr" == 2,32,Con("Fdr" == 4,64,Con("Fdr" == 8,128,Con("Fdr" == 16,1,Con("Fdr" == 16,1,Con("Fdr" == 32,2,Con("Fdr" == 64,4,Con("Fdr" == 128,8)))))))))
This "reverses" the flow direction in the Fdr grid, but doesn't really work.
Any suggestions?