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SWAT-MODFLOW

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Welcome to the SWAT-MODFLOW Google Group!

We’re excited to have you here! This community is dedicated to supporting users of the coupled SWAT-MODFLOW model. You can find introductory materials and documentation here:
http://swat.tamu.edu/software/swat-modflow/

For those looking to streamline their workflow, we also offer QSWATMOD, a graphical user interface for SWAT-MODFLOW, available at:
https://github.com/spark-brc/QSWATMOD2-plugin

Our team is actively developing a reproducible SWAT-MODFLOW optimization framework and creating step-by-step tutorial videos to help you get the most out of the model. We’ll keep you posted, and we expect to share these new resources in the coming months!

Thanks for joining the group—your participation strengthens our community!

0 selected

Seonggyu Park, Jürgen Gotthard (Jürgen G.)2

Apr 8

🚀 QSWATMOD2 2.10.0 released!

Dear Seonggyu, I would just like to give the positive feedback that loading the raster files now

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🚀 QSWATMOD2 2.10.0 released!

Dear Seonggyu, I would just like to give the positive feedback that loading the raster files now

Apr 8

SWAT-MODFLOW, … Abayomi Kuti4

7/16/19

Paper to cite for SWAT-MODFLOW modeling studies

Good morning sir, I want to know how to link SWAT-MODFLOW with SWAT FOR CALIBRATION AND VALIDATION.

unread,

Paper to cite for SWAT-MODFLOW modeling studies

Good morning sir, I want to know how to link SWAT-MODFLOW with SWAT FOR CALIBRATION AND VALIDATION.

7/16/19

Himmat Basnet, Elhem Gandouzi2

10:05 AM

Error in creating river_grid shapefile in QSWATMOD

Hello, How you solve this problem please? I have the same Le mercredi 27 août 2025 à 13 h 35 min 24 s

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Error in creating river_grid shapefile in QSWATMOD

Hello, How you solve this problem please? I have the same Le mercredi 27 août 2025 à 13 h 35 min 24 s

10:05 AM

9:58 AM

Error in create river_grid

Hello, When i try to create the river_grid in QSWATMOD i had this error. Any Help please? An error

unread,

Error in create river_grid

Hello, When i try to create the river_grid in QSWATMOD i had this error. Any Help please? An error

9:58 AM

Oct 15

River connection SWAT-MODFLOW

Hello, I created my SWAT-MODFLOW coupling files using ArcGIS and I'm running the simulations

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River connection SWAT-MODFLOW

Hello, I created my SWAT-MODFLOW coupling files using ArcGIS and I'm running the simulations

Oct 15

Oct 10

About the DEM input problem

Hi, I am trying to upload DEM in the QSWAT-MODFLOW but the following error is appearing: An error has

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About the DEM input problem

Hi, I am trying to upload DEM in the QSWAT-MODFLOW but the following error is appearing: An error has

Oct 10

Oct 7

Regarding Exporting of Grids shapefile

Hello everyone, I am working with ModelMuse and QSWATMOD2, and I need some help exporting the MODFLOW

unread,

Regarding Exporting of Grids shapefile

Hello everyone, I am working with ModelMuse and QSWATMOD2, and I need some help exporting the MODFLOW

Oct 7

Sep 28

Issue with bedrock depth and GW level simulation

Hi all and Dr Seonggyu, I am trying to develop SWAT-MODFLOW model using QSWATMOD2 for my watershed in

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Issue with bedrock depth and GW level simulation

Hi all and Dr Seonggyu, I am trying to develop SWAT-MODFLOW model using QSWATMOD2 for my watershed in

Sep 28

Bushraa Shaikh, … Jean Vasil Rafaralahy4

Sep 15

Swat-modflowinstallation and tutorial video

Hi everyone, Thank you very much Vasil Le lun. 15 sept. 2025 à 08:05, Seonggyu Park <envpsg@gmail.

unread,

Swat-modflowinstallation and tutorial video

Hi everyone, Thank you very much Vasil Le lun. 15 sept. 2025 à 08:05, Seonggyu Park <envpsg@gmail.

Sep 15

Rajesh Khatakho

Sep 15

FAILED TO MEET SOLVER CONVERGENCE and temporal variability in irrigation pumping

Dear Sir, Question 1: What is the reason behind the non-convergence of SWAT-MODFLOW after the daily

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FAILED TO MEET SOLVER CONVERGENCE and temporal variability in irrigation pumping

Dear Sir, Question 1: What is the reason behind the non-convergence of SWAT-MODFLOW after the daily

Sep 15

Jylee, … Pedro Sanzana17

Sep 15

Error while importing shapefiles (LREW_demo in the tutorial)

Dear Comunity SWAT MODFLOW I am using the files in the I get the folowing error (at the river linking

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Error while importing shapefiles (LREW_demo in the tutorial)

Dear Comunity SWAT MODFLOW I am using the files in the I get the folowing error (at the river linking

Sep 15

Ryan Shojinaga, Seonggyu Park2

Sep 15

Evapotranspiration (ET) extinction depth

Hi Ryan, Thanks for pointing out this issue. I will check it soon and aim to fix it in the next

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Evapotranspiration (ET) extinction depth

Hi Ryan, Thanks for pointing out this issue. I will check it soon and aim to fix it in the next

Sep 15

Fatemeh Pourmansouri (Rozita), Seonggyu Park2

Sep 15

Looking for Guidance on Starting SWAT-MODFLOW Integration

Hi, you might find the SWAT-MODFLOW software page useful https://swat.tamu.edu/software/swat-modflow/

unread,

Looking for Guidance on Starting SWAT-MODFLOW Integration

Hi, you might find the SWAT-MODFLOW software page useful https://swat.tamu.edu/software/swat-modflow/

Sep 15

Sophia Wang (SophiaMnn), Seonggyu Park2

Sep 15

Inquiry regarding recharge results and associated modeling considerations

Hi Jiamei, Q1: Yes, the "recharge in" value in the MODFLOW output is derived from the

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Inquiry regarding recharge results and associated modeling considerations

Hi Jiamei, Q1: Yes, the "recharge in" value in the MODFLOW output is derived from the

Sep 15

Lenka Saikumar, Seonggyu Park2

Sep 15

Regarding python error in QSWATMOD2 plugin

Hi, To activate dynamic irrigation with pumping from MODFLOW, you need a well package in your MODFLOW

unread,

Regarding python error in QSWATMOD2 plugin

Hi, To activate dynamic irrigation with pumping from MODFLOW, you need a well package in your MODFLOW

Sep 15

Daniel Varela, Seonggyu Park2

Sep 15

dimensions of input files

For a MODFLOW model, you can select different length and time units (eg, meters vs. feet, days vs.

unread,

dimensions of input files

For a MODFLOW model, you can select different length and time units (eg, meters vs. feet, days vs.

Sep 15

Sep 11

Issue in QSWATMOD2 when importing MODFLOW grid shapefile

I am getting the following error when importing the MODFLOW grid into QSWATMOD2: Traceback (most

unread,

Issue in QSWATMOD2 when importing MODFLOW grid shapefile

I am getting the following error when importing the MODFLOW grid into QSWATMOD2: Traceback (most

Sep 11

Aug 31

py:1052: ResourceWarning: subprocess 28520 is still running _warn("subprocess %s is still running" % self.pid,

WARNING warning:F:\softword\QGIS33~1.1\apps\Python39\lib\subprocess.py:1052: ResourceWarning:

unread,

py:1052: ResourceWarning: subprocess 28520 is still running _warn("subprocess %s is still running" % self.pid,

WARNING warning:F:\softword\QGIS33~1.1\apps\Python39\lib\subprocess.py:1052: ResourceWarning:

Aug 31

Jürgen Gotthard (Jürgen G.)

Jul 5

Calibration of SWAT-MODFLOW model coupled by QSWATMOD

Dear all! I have coupled an existing SWAT model with a MODFLOW model (created in the course of

unread,

Calibration of SWAT-MODFLOW model coupled by QSWATMOD

Dear all! I have coupled an existing SWAT model with a MODFLOW model (created in the course of

Jul 5

Jürgen Gotthard (Jürgen G.), Seonggyu Park3

May 22

Significance of “gaps” in HRUs for SWAT-MODFLOW (using QSWATMOD)

Hi Seonggyu, thank you very much for the explanation and the assessment, which is definitely helpful.

unread,

Significance of “gaps” in HRUs for SWAT-MODFLOW (using QSWATMOD)

Hi Seonggyu, thank you very much for the explanation and the assessment, which is definitely helpful.

May 22

刘涛, Tamene Tadele4

May 11

QSWAT Worked Fine Yesterday, Fails to Start Editor with XML Parsing Error Today

Take it easy. You're not alone in the 🌎 On Sun, May 11, 2025, 4:23 PM 'lalalallaalla' via

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QSWAT Worked Fine Yesterday, Fails to Start Editor with XML Parsing Error Today

Take it easy. You're not alone in the 🌎 On Sun, May 11, 2025, 4:23 PM 'lalalallaalla' via

May 11

iste G, Seonggyu Park2

May 9

Stop at stress period 1(FAILED TO MEET SOLVER CONVERGENCE CRITERIA)(using QSWATMOD2)

Hi James, I've just requested access to your model. I'll take a look as soon as I receive it.

unread,

Stop at stress period 1(FAILED TO MEET SOLVER CONVERGENCE CRITERIA)(using QSWATMOD2)

Hi James, I've just requested access to your model. I'll take a look as soon as I receive it.

May 9

Seonggyu Park, Jürgen Gotthard (Jürgen G.)4

Mar 30

QSWATMOD2 2.9.1 released

Dear Seonggyu, thank you for your prompt reply and the prospect of an updated version being available

unread,

QSWATMOD2 2.9.1 released

Dear Seonggyu, thank you for your prompt reply and the prospect of an updated version being available

Mar 30

Jose Cuadros Loayza, … Jürgen Gotthard (Jürgen G.)6

Mar 21

ERROR IN LOADING HYDRAULIC CONDUCTIVITY RASTER

Dear Seonggyu, thank you very much for your prompt response and the information. The prospect of an

unread,

ERROR IN LOADING HYDRAULIC CONDUCTIVITY RASTER

Dear Seonggyu, thank you very much for your prompt response and the information. The prospect of an

Mar 21

Jürgen Gotthard (Jürgen G.)2

Mar 20

QSWATMOD: Create simple MODFLOW model - loading rasters - field names

Sorry, obviously i provided an incorrect link, that should be the right one: https://groups.google.

unread,

QSWATMOD: Create simple MODFLOW model - loading rasters - field names

Sorry, obviously i provided an incorrect link, that should be the right one: https://groups.google.

Mar 20

Mar 12

forrtl: severe (24): end-of-file during read, unit 30020,

I use swat-mod version 2. Error 24 when running. Hope to get answers, thank you very much

unread,

forrtl: severe (24): end-of-file during read, unit 30020,

I use swat-mod version 2. Error 24 when running. Hope to get answers, thank you very much

Mar 12

Ajaykumar Venkatarao, … Jürgen Gotthard (Jürgen G.)5

Mar 12

Geeting error in import the raster file bottom elevation

Hi! Have you been successful solving the problem? I'm experiencing a similar problem ... When

unread,

Geeting error in import the raster file bottom elevation

Hi! Have you been successful solving the problem? I'm experiencing a similar problem ... When

Mar 12

rael nyakundi, Frank Ssekyondwa2

Feb 16

SWATMOD Calibration

Hi Rael, did you get any materials on how to calibrate SWATMODFLOW? Kind regards On Wednesday,

unread,

SWATMOD Calibration

Hi Rael, did you get any materials on how to calibrate SWATMODFLOW? Kind regards On Wednesday,

Feb 16

Frank Ssekyondwa, Seonggyu Park2

Feb 11

ERROR IN CREATING MODFLOW RIVER SHAPEFILE.

Hi, If the issue is still unresolved, please share your QSWATMOD project folder and gis file with me.

unread,

ERROR IN CREATING MODFLOW RIVER SHAPEFILE.

Hi, If the issue is still unresolved, please share your QSWATMOD project folder and gis file with me.

Feb 11

akanksha soni, … Seonggyu Park5

Feb 11

Reg. QSWATMOD setup

Hi, It depends on the context. For streamflow, the unit is cubic meters per second. For groundwater

unread,

Reg. QSWATMOD setup

Hi, It depends on the context. For streamflow, the unit is cubic meters per second. For groundwater

Feb 11

Samar Mohamed, Seonggyu Park2

Feb 11

HRUs, Sub & Riv cannot be readable!

Hi, If the issue is still unresolved, please share your SWAT model and shapefiles with me. I'll

unread,

HRUs, Sub & Riv cannot be readable!

Hi, If the issue is still unresolved, please share your SWAT model and shapefiles with me. I'll

Feb 11

Meeta Gupta, Frank Ssekyondwa2

12/30/24

Unable to create the SWATMODFLOW Linkage files

Please delete the extention (.txt) from all the linkage files and try again. On Sun, 29 Dec 2024, 13:

unread,

Unable to create the SWATMODFLOW Linkage files

Please delete the extention (.txt) from all the linkage files and try again. On Sun, 29 Dec 2024, 13:

12/30/24

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