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Is modflow Suitable to model head gradient in vertical diration?


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Dear all,

I do appreciate if you can help me with this problem:

I had a square area with 4 cutoff walls around it. and some wells are going to be inside the area to dry it.

first I modeled a cross section in Seep2D to see how the wells dry the area. I attached a picture of results. the results looks fine.

but I wonder why when I model it in Modflow, as 3D model, the seepage (vertical gradient) is not as continuous as it was in SEEP2D . I attached image here.

it sounds like any cell in one aquifer layer has almost the same head pressure along its depth!!!

so should I divide my aquifer to multiple layers to get more accurate results?

Thank you for any help.



Edited by Zahrab
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