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Welcome to the QSWAT+ user discussion group.

Please note this group is for questions and discussion related to the QGIS interface, QSWAT+, not the model itself or the editor. For content related to those topics, please see:

For questions and discussions related to the 2012 version of SWAT and its interfaces, please see the SWAT website.

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Website: swat.tamu.edu/plus

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Liliana Bettolo, Chris George2

Dec 15

You cannot rely on the shapefiles to accurately describe HRUs unless you do not filter the HRUs at

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You cannot rely on the shapefiles to accurately describe HRUs unless you do not filter the HRUs at

Dec 15

Evren Soylu, Chris George2

Dec 15

Unresponsive QSWAT+ Plugin

Looks like you have another installation of Python that has an incompatible version of Numpy. Chris

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Unresponsive QSWAT+ Plugin

Looks like you have another installation of Python that has an incompatible version of Numpy. Chris

Dec 15

Salim Shawl, Gafar Agunbiade2

Dec 15

seeking assistance in resolving this error

You need to check the box for print for all annual results. Swat check uses the _aa (annual) to

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seeking assistance in resolving this error

You need to check the box for print for all annual results. Swat check uses the _aa (annual) to

Dec 15

Dec 10

Issue with USLE and SedimentYield

Dear all, I have an issue with the production of sediment in QSWAT+. I do correctly provide the

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Issue with USLE and SedimentYield

Dear all, I have an issue with the production of sediment in QSWAT+. I do correctly provide the

Dec 10

Dec 10

Parametrization of pounds and swales in QSWAT+

Dear all, I am tring to add pounds and swales in QSWAT+. I added the pounds as reservoir, with the

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Parametrization of pounds and swales in QSWAT+

Dear all, I am tring to add pounds and swales in QSWAT+. I added the pounds as reservoir, with the

Dec 10

Riad Arefin, … Osman Furkan TOKGÖZ3

Dec 8

About the update of QSWAT+ data using best simulated parameters.

First you should edit file.cio file and save it with notepad and write "calibration.cal" at

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About the update of QSWAT+ data using best simulated parameters.

First you should edit file.cio file and save it with notepad and write "calibration.cal" at

Dec 8

Osman Furkan TOKGÖZ

Dec 8

Elevation Bands

QSWAT+ separates HRUs into slope bands but does not separate them into elevation bands. As a result,

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Elevation Bands

QSWAT+ separates HRUs into slope bands but does not separate them into elevation bands. As a result,

Dec 8

Ashehad Ali, … Gafar Agunbiade4

Dec 3

Could you please state explicitly the QGIS version? Thanks, Ashehad On Thu, Dec 4, 2025 at 11:04 AM

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Could you please state explicitly the QGIS version? Thanks, Ashehad On Thu, Dec 4, 2025 at 11:04 AM

Dec 3

Matthew Lombardo

Dec 3

soil_k Calibration Using Code

Hello everyone, Has anyone used code to edit soil_k for their calibration. I am using the GLUE method

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soil_k Calibration Using Code

Hello everyone, Has anyone used code to edit soil_k for their calibration. I am using the GLUE method

Dec 3

Paige Babushkin, Chris George2

Nov 26

Error in Existing Watershed Delineation

Looks like your channel file has no WSNO field. Did you not get an error message about this? Chris On

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Error in Existing Watershed Delineation

Looks like your channel file has no WSNO field. Did you not get an error message about this? Chris On

Nov 26

Afonso Augusto Magalhães de Araujo

Nov 25

Nash number is varying even for regions whose parameters are fixed?

Hello everybody! I am calibrating the basin illustrated in fig_1-stations (attached), step by step,

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Nash number is varying even for regions whose parameters are fixed?

Hello everybody! I am calibrating the basin illustrated in fig_1-stations (attached), step by step,

Nov 25

정세윤, … 아디타마페르지안요가4

Nov 25

Error in Running SWAT+ pathogen moduel

I am also experiencing the exact same pathogen error (“Attempt to fetch from allocatable variable LY

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Error in Running SWAT+ pathogen moduel

I am also experiencing the exact same pathogen error (“Attempt to fetch from allocatable variable LY

Nov 25

Nov 19

Dear QSWAT+ Team, I have installed QSWATPlus on a Linux cluster from https://github.com/swat-model/

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Dear QSWAT+ Team, I have installed QSWATPlus on a Linux cluster from https://github.com/swat-model/

Nov 19

Nov 19

The plugin QSWATPlus caused QGIS to crash

Dear QSWAT+ Users and Developers, I am a beginner to QSWAT+. I have installed QGIS and SWAT+ by

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The plugin QSWATPlus caused QGIS to crash

Dear QSWAT+ Users and Developers, I am a beginner to QSWAT+. I have installed QGIS and SWAT+ by

Nov 19

Dessalegn Worku, Nancy B. Sammons2

Nov 18

Assistance Needed with “Unknown Soil Value” Error in QSWAT+

Dessalegn: I am seeing several problems in 'usersoil.csv'. They are listed below. --The soil

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Assistance Needed with “Unknown Soil Value” Error in QSWAT+

Dessalegn: I am seeing several problems in 'usersoil.csv'. They are listed below. --The soil

Nov 18

Afonso Augusto Magalhães de Araujo

Nov 17

Unexpected ToolBox crash near the end of iterations.

Dear all. This is neither the first nor the second time that, after several days of rounds, at the

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Unexpected ToolBox crash near the end of iterations.

Dear all. This is neither the first nor the second time that, after several days of rounds, at the

Nov 17

Nov 7

Unable to Locate QSWAT+ Download Link and Installation Instructions

Dear QSWAT Team, I hope this message finds you well. I am currently working on a watershed modeling

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Unable to Locate QSWAT+ Download Link and Installation Instructions

Dear QSWAT Team, I hope this message finds you well. I am currently working on a watershed modeling

Nov 7

Matthew Lombardo2

Nov 4

Error Running SWAT Line Executable

Hello everyone, I was able to get it working on my own. On Monday, 3 November 2025 at 10:11:36 UTC-5

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Error Running SWAT Line Executable

Hello everyone, I was able to get it working on my own. On Monday, 3 November 2025 at 10:11:36 UTC-5

Nov 4

Muhammad Shahrukh Ansari

Nov 3

Is it necessary the excel file of study area according to USDA soil Format in QSWAT?

Hi, I hope all will be fine. I am a beginner to run the QSWAT model. I want to know that May i run

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Is it necessary the excel file of study area according to USDA soil Format in QSWAT?

Hi, I hope all will be fine. I am a beginner to run the QSWAT model. I want to know that May i run

Nov 3

Matthew Lombardo

Nov 3

Error Running SWAT+ Line Executable

Hello all, I am trying to run a SWAT+ Executable in my calibration code, and I cannot get the

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Error Running SWAT+ Line Executable

Hello all, I am trying to run a SWAT+ Executable in my calibration code, and I cannot get the

Nov 3

Tulika K, … Onur Kerimoglu6

Nov 3

Unable to install QSWAT+ in linux

Hi Chris, thanks for your response. This does not seem to be a version problem: you are running the

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Unable to install QSWAT+ in linux

Hi Chris, thanks for your response. This does not seem to be a version problem: you are running the

Nov 3

bharadwaj mandala, Nancy B. Sammons2

Oct 30

error while examining the model

You should update your SWAT Checker software. I have included the link below. https://swat.tamu.edu/

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error while examining the model

You should update your SWAT Checker software. I have included the link below. https://swat.tamu.edu/

Oct 30

Matthew Lombardo

Oct 28

Curver Number Maximum and Minimum

Hi everyone, I found this website from 2014 that says that the max and min for curve number is 98 and

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Curver Number Maximum and Minimum

Hi everyone, I found this website from 2014 that says that the max and min for curve number is 98 and

Oct 28

Haris B. Ukat,CE

Oct 28

Compute Simulation Iterations (Initial 2010, Final 2015, Target 2020)

I kindly request assistance in computing the number of simulation iterations for a MOLUSCE cellular

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Compute Simulation Iterations (Initial 2010, Final 2015, Target 2020)

I kindly request assistance in computing the number of simulation iterations for a MOLUSCE cellular

Oct 28

bharadwaj mandala, Gafar Agunbiade2

Oct 28

Issue with HRUs , need HELP!

I think the issue is your projection. Your soul map and the land use have different projection from

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Issue with HRUs , need HELP!

I think the issue is your projection. Your soul map and the land use have different projection from

Oct 28

bharadwaj mandala, Chris George2

Oct 24

PROBLEM WITH CREATING HRUs, NEED HELP

It is likely that you have assigned the project projection to your soil and landuse maps but not

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PROBLEM WITH CREATING HRUs, NEED HELP

It is likely that you have assigned the project projection to your soil and landuse maps but not

Oct 24

Gafar Agunbiade

Oct 24

Modelling a forest+grassland land use

Hi everyone, I'm currently working on modeling my study area, which involves a forest–grassland

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Modelling a forest+grassland land use

Hi everyone, I'm currently working on modeling my study area, which involves a forest–grassland

Oct 24

Matthew Lombardo

Oct 24

Hourly Timesteps for Model Output

Hi everyone, Is it possible to run SWAT+ so it creates outputs at an hourly timescale instead of a

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Hourly Timesteps for Model Output

Hi everyone, Is it possible to run SWAT+ so it creates outputs at an hourly timescale instead of a

Oct 24

Osman Furkan TOKGÖZ

Oct 24

Landscape Analysis is Not Responding

Hi, I'm trying to create a landscape but everytime I try QSWAT+ is not responding. I tried with

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Landscape Analysis is Not Responding

Hi, I'm trying to create a landscape but everytime I try QSWAT+ is not responding. I tried with

Oct 24

Oshadhee Perera, Chris George3

Oct 24

NEED HELP FOR HRU CREATION ERROR

Yes. This came when I use read the maps. The HRUs are displaying but I cant go to the next step (HRU

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NEED HELP FOR HRU CREATION ERROR

Yes. This came when I use read the maps. The HRUs are displaying but I cant go to the next step (HRU

Oct 24

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