Request for help

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Zena Tessema

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Dec 9, 2025, 2:24:06 AM (8 days ago) Dec 9
to MODFLOW Users Group

Hello everyone,

I am currently working on a SWAT-MODFLOW simulation for my project.

During the MODFLOW run (using MODFLOW-NWT), I encountered warnings related to large river stage gradients and GHB boundary head gradients.

Could anyone please advise on how I can resolve these issues?

I have attached a screenshot for additional context.

I would greatly appreciate any guidance or suggestions you can provide.

Best regards,
Zena Tessema

photo_2025-12-02_20-17-30.jpg
photo_2025-12-02_20-15-46.jpg
photo_2025-12-02_20-17-31.jpg

Zena Tessema

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Dec 9, 2025, 3:47:51 AM (8 days ago) Dec 9
to MODFLOW Users Group
photo_2025-12-02_20-17-30.jpg
photo_2025-12-02_20-15-46.jpg
photo_2025-12-02_20-17-31.jpg

Richard Winston

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Dec 9, 2025, 7:08:49 AM (8 days ago) Dec 9
to mod...@googlegroups.com
I suggest you plot river stages and GHB boundary heads to make sure they are what you want them to be. Check some of the locations that ModelMuse indicated could be problems. If the assigned values are what you intended, you can ignore the warnings.

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Zena Tessema

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1:59 AM (19 hours ago) 1:59 AM
to MODFLOW Users Group

Dear Prof. Richard,

Thank you for your response.

I would appreciate your help with the configuration problem in ModelMuse. 

The screenshot is attached below.

With best regards,

Zena Tessema


e18a8465-6aa1-43bb-92a1-d833305d97f1.png
eab1bf99-78c1-4e99-abcc-ce84dccf85ab.png
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