I have several flow direction rasters resulting from a python script that iterates through a watershed feature class and produces a flow direction for each one, amongst other things.
I need to merge these rasters into one for the next step in my process. In the past I have successfully used Mosaic to New Raster to do this, but for some reason with this group, I end up with a raster that has the combined extent of all the rasters, but only seems to have the values of one.
It's confusing to me, because the individual rasters only have extents of their individual watershed area, not the combined extent. I have tried using last and maximum as operators. Any ideas?