# Steady state flow analysis - estimation of the flow using 'zone fluid steady-state'
**URL:** https://forum.itascainternational.com/t/steady-state-flow-analysis-estimation-of-the-flow-using-zone-fluid-steady-state/1972
**Category:** FLAC3D
**Created:** [March 3, 2025, 6:16pm UTC](https://forum.itascainternational.com/t/steady-state-flow-analysis-estimation-of-the-flow-using-zone-fluid-steady-state/1972 "2025-03-03T18:16:58Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@MiguelN](https://forum.itascainternational.com/u/MiguelN)
#### Post date: [March 3, 2025, 6:16pm UTC](https://forum.itascainternational.com/t/steady-state-flow-analysis-estimation-of-the-flow-using-zone-fluid-steady-state/1972/1 "2025-03-03T18:16:58Z")
Dear Itascans, is it possible to estimate flow in steady state using the command ‘zone fluid steady-state’ and ‘zone fluid unsaturated cutoff 0.0’?
Thanks in advance!!!
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### Author:  [@jhazzard](https://forum.itascainternational.com/u/jhazzard)
#### Post date: [April 15, 2025, 8:04pm UTC](https://forum.itascainternational.com/t/steady-state-flow-analysis-estimation-of-the-flow-using-zone-fluid-steady-state/1972/2 "2025-04-15T20:04:23Z")
Do you mean you want to get a steady-state pore pressure solution with unsaturated cutoff? This is definitely possible. Try [this example](https://docs.itascacg.com/itasca930/flac3d/zone/test2d/ExampleApplications/FromFLAC/01SlopeStability/SlopeStability.html) and in the fluid\_flow.dat replace
```
model solve-fluid ratio-flow 1e-3
```
with
```
zone fluid steady-state
```
It works great. You just don’t get the pore-pressure history because it is solved in one step.
---
### Author:  [@MiguelN](https://forum.itascainternational.com/u/MiguelN)
#### Post date: [April 29, 2025, 1:40pm UTC](https://forum.itascainternational.com/t/steady-state-flow-analysis-estimation-of-the-flow-using-zone-fluid-steady-state/1972/3 "2025-04-29T13:40:25Z")
Thank you Jim. I tested and works very well, and the most important, very fast!!!