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Catchments for an entire state 

Question asked by PonderosaAdvisors on Jan 31, 2017

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?

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