# Ground Water Table Setting

**URL:** https://forum.itascainternational.com/t/ground-water-table-setting/2191
**Category:** FLAC
**Created:** [August 4, 2025, 9:48pm UTC](https://forum.itascainternational.com/t/ground-water-table-setting/2191 "2025-08-04T21:48:11Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![New\_user](https://avatars.discourse-cdn.com/v4/letter/n/e19adc/32.png) [@New\_user](https://forum.itascainternational.com/u/New_user)
#### Post date: [August 4, 2025, 9:48pm UTC](https://forum.itascainternational.com/t/ground-water-table-setting/2191/1 "2025-08-04T21:48:11Z")

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![Water Table Setting](https://canada1.discourse-cdn.com/flex031/uploads/itasca/original/2X/8/84168522d58271b6f2146a919e018d067a60b2be.png)  
I want to create a slope model where the groundwater is 1m below the slope surface.  
How can I do this in FLAC 2D?

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### Author: ![msepu](https://avatars.discourse-cdn.com/v4/letter/m/b9e5f3/32.png) [@msepu](https://forum.itascainternational.com/u/msepu)
#### Post date: [August 5, 2025, 2:00pm UTC](https://forum.itascainternational.com/t/ground-water-table-setting/2191/2 "2025-08-05T14:00:16Z")

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i can think in two options..  
One is to create the water table geometry using some drawing software so you can have it in .dxf format. Then import it into flac2d and use the command zone water set.

The other is, knowing the vertex of that water table, you can built it using the geometry edge create command, and then use the command zone water set.

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<div class="post-metadata">

### Author: ![New\_user](https://avatars.discourse-cdn.com/v4/letter/n/e19adc/32.png) [@New\_user](https://forum.itascainternational.com/u/New_user)
#### Post date: [August 9, 2025, 6:05am UTC](https://forum.itascainternational.com/t/ground-water-table-setting/2191/3 "2025-08-09T06:05:20Z")

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I tried your first option.  
It works pretty good.  
Thanks for your help!

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### Author: ![cheng](https://avatars.discourse-cdn.com/v4/letter/c/ecccb3/32.png) [@cheng](https://forum.itascainternational.com/u/cheng)
#### Post date: [August 10, 2025, 5:08pm UTC](https://forum.itascainternational.com/t/ground-water-table-setting/2191/4 "2025-08-10T17:08:11Z")

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A simpler one is to use “[zone water](https://docs.itascacg.com/itasca900/flac3d/zone/doc/manual/zone_manual/zone_commands/cmd_zone.water.html#zone.water) table” command, e.g.,

> table ‘water\_table’ add (-1,9) (4,9) (12,2), (100,2)
> 
> zone water density 1.0
> 
> zone water table ‘water\_table’

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<div class="post-metadata">

### Author: ![New\_user](https://avatars.discourse-cdn.com/v4/letter/n/e19adc/32.png) [@New\_user](https://forum.itascainternational.com/u/New_user)
#### Post date: [August 14, 2025, 9:58pm UTC](https://forum.itascainternational.com/t/ground-water-table-setting/2191/5 "2025-08-14T21:58:33Z")

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This method also works. Thanks!