Problem in assigning the river boundary

[riad arefin]

I am trying to assign the river boundary, therefore, I am selection line tool and trying to draw the river line into the grid, but after giving the value, the river is becoming disappear. The lower left side shows the small portion in blue color (as shown in figure) but the red color portion (as shown in figure in red color ) is disappearing. 

How I can solve this problem.

Regards

Mr. Riad Arefin

[Jakab Andras - Gmail]

Go ahead and check the next layer, and you should the rest of the river boundary cells in that layer or even other layers below.

Visual MODFLOW by default assigns river boundaries to the appropriate layer, i.e., if the river bottom elevation ($RBOT) is below the bottom of the cell elevation then the boundary will be placed in the next cell below. This option, however, can be deactivated during the assignment process, i.e., deactivate the option "Assign to appropriate layer".

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[Jakab Andras - Gmail]

Riad,

What I see from your spreadsheet is that you specify depths instead of elevations for the river stage and riverbed. Visual MODFLOW will not subtract these values from any reference value (e.g., surface elevation) for you. Instead, you shall specify elevations as inputs.

I also see that instead of having transient boundary condition data (based on the exported data), you seem to have a steady-state river defined for the model. Try to re-import the corrected input data and pay attention to the mapping of columns. There are two options to import your data: (1) using the "Import" button from the toolbar, or (2) assign along a line and use an ASCII file to specify the input data. They provide different options and one of them will likely be appropriate fro your needs.

I would recommend, however, to evaluate Visual MODFLOW Flex as it has more powerful tools for assigning boundary conditions along linear features, especially if they also need interpolation along their length.

András

---------- Forwarded message ---------
Feladó: riad arefin <riad...@gmail.com>
Date: 2023. jún. 21., Sze, 17:19
Subject: Re: [MODFLOW] Problem in assigning the river boundary
To: <jaka...@gmail.com>

Dear Jakab Andras,

Thank you for your kind response.

I have processed data as attached to the excel file. In this file, the exported data also exists where rows and columns for each river cell are observed.

Now my quarry is how I integrate this huge existing observed data with the exported file row and column wise. 

Regards

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[riad arefin]

I understand I am implementing this as soon as possible. If I find any quarry i will let you know.

Regards

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[riad arefin]

I imported the ascii file and showed the data above. Is it correct? 

second is;

are these values same for all river cell?

Regards

Mr. Riad