I am trying to create catchments for the high resolution NHD stream network and a 10m DEM in the entire state of Texas. So far, I have been processing the Fill Sink operation for 21 days and it still has not completed. I am looking for a way to break the state apart and run small areas that I can then splice back together and still be hydrologically connected.
I found an article that discusses “Regional analysis” in ArcHydro, but does not explain the process well enough for me to add into my own workflow. Can anyone supply some guidance?