Memory error routing DEM
I am trying to process a 1.6m per pixel DEM for use with the Nutrient Delivery Ratio model. I am trying to run it in RouteDEM, but it keeps returning a "memory error". The DEM is filled and has no sinks left... And If I resample it to 5m per pixel it works fine. Not sure about the accuracy of resampling a DEM though... I have attached the log file. Can you please help?
Also, I am trying to find the right threshold for the streams (with the 5m DEM) but what is working for me is somewhere around 60.000, even though there are some streams that have gaps for no apparent reason. Why is the threshold so different from the default? Are the streams drawn with the threshold supposed to match only the rivers and small streams or are they supposed to branch out a little? Another problem with my DEM is that it has a lot of drainage canals and it is really flat (Denmark)... So I am guessing that may be the problem... but how to solve it?
Well, sorry for all the questions! :) Any help will be much appreciated.