error while running modflow within groundwater vistas

[Rahena Parvin Rannu]

Hi All,

I am a beginner at using MODFLOW using GW Vistas.

I was trying to run a transient model within Vistas but it can't read river and recharge data and shows the error (please see screenshot). I am assuming it might be due to a data (input file) error that I already checked but still not able to figure it out.

However, could you please share your thoughts on why this issue is occurring?

Kind Regards,

Rahena

[Richard Winston]

It's hard to tell exactly what went wrong, but the problem relates to the file with a unit number of -5. Check the name file to figure out the name of the file associated with -5.

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[Rahena Parvin Rannu]

Hi Richard,

Thank you for your reply. 

I have checked the input file and nam file, but didn't get anything with a unit number of -5. So, still having that issue. Do you have any other suggestions?

Kind Regards,

Rahena

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[Richard Winston]

How about a unit number of five (+5). MODFLOW sometimes use a negative number to indicate that a binary file is being read or written but actually associates a positive unit number with the file. Also check the end of the listing file to see what it was trying to read when it encountered the problem. 

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