<https://forum.tuflow.com/index.php?/topic/2027-pipeflow-not-returning-to-0/#comment-4867>
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"Hi,\n \n\n\n\tI am modelling a 460ha urban catchment with a large number of pits and pipes (~2000). The model is running as expected however between bursts the pipeflow in most pipes does not return to 0, and instead plateaus at a number greater than 0. By the time that flows are reaching the bottom end of the pipe network the cumulative effect of this is significant (see attachment). I've cross checked flows entering the pipe network via the pits and they don't seem to match. i.e. pit inflow =0, pipeflow &gt; 0 (even at the most upstream pipe).\n \n\n\n\tThe model is rainfall on grid and being run using GPU HPC.\n \n\n\n\tDoes anyone have any ideas about what might be causing this?\n \n\n\n\tMany thanks,\n \n\n\n\tJosh\n \n\n \n"
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