0 values obtained for most number of sub-basins in NDR output
I ran the NDR model with 156 sub-basins. In my output table, I am getting 0 values for n_export_total and p_export_total for 153 sub-basins.
Though I have positive and reasonable values for all sub-basin in n_load and p_load.
What might be a reason for this? And is it possible practically to have no (0) nutrients exported ?