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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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Apr 2

PLEASE READ: New Template for reporting issues

Hi everyone, To ensure the development team and community members can provide the most efficient and

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PLEASE READ: New Template for reporting issues

Hi everyone, To ensure the development team and community members can provide the most efficient and

Apr 2

Maclean Nyasulu

Jul 21

START SWAT+ EDITOR PROJECT FROM SWAT

Hie fellows l encountered this error which says " there was an error importing your gis data

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START SWAT+ EDITOR PROJECT FROM SWAT

Hie fellows l encountered this error which says " there was an error importing your gis data

Jul 21

Jul 21

I ran the SWAT+ Editor and SWAT+ Toolbox using default values without changing any parameters, but

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I ran the SWAT+ Editor and SWAT+ Toolbox using default values without changing any parameters, but

Jul 21

Jul 15

SWAT+ Editor Calibration Question

Dear SWAT+ Team, I am trying to calibrate SWAT+ model using SWAT+ Editor and have encountered two

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SWAT+ Editor Calibration Question

Dear SWAT+ Team, I am trying to calibrate SWAT+ model using SWAT+ Editor and have encountered two

Jul 15

Jul 10

'Name' attribute in reservoir.con

Dear all, I wonder how to merge reservoir in the reservoir.con (of hydrology.res) table with the

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'Name' attribute in reservoir.con

Dear all, I wonder how to merge reservoir in the reservoir.con (of hydrology.res) table with the

Jul 10

Jul 9

Difference Between SWAT+ Toolbox and SWAT+ Editor Results

Dear SWAT+ Team, I am calibrating daily streamflow using both SWAT+ Toolbox and SWAT+ Editor. When I

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Difference Between SWAT+ Toolbox and SWAT+ Editor Results

Dear SWAT+ Team, I am calibrating daily streamflow using both SWAT+ Toolbox and SWAT+ Editor. When I

Jul 9

Ilef Abid, natalja....@gmail.com2

Jul 8

Question About Biomass Outputs for Multiple Crops in a Single HRU SWAT+

Hello, Thank you for your detailed explanation. To answer your questions: - Which output file

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Question About Biomass Outputs for Multiple Crops in a Single HRU SWAT+

Hello, Thank you for your detailed explanation. To answer your questions: - Which output file

Jul 8

Grace, natalja....@gmail.com2

Jul 8

SWAT Weather Inputs

Hello, I think it would be impossible to do any direct streamflow calibration without observed data.

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SWAT Weather Inputs

Hello, I think it would be impossible to do any direct streamflow calibration without observed data.

Jul 8

Olumide Sunday OJO, natalja....@gmail.com2

Jul 8

Please i don't know how to resolve this issues of HRU

To ensure the development team and community members can provide the most efficient and accurate help

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Please i don't know how to resolve this issues of HRU

To ensure the development team and community members can provide the most efficient and accurate help

Jul 8

Simon DE OLIVEIRA, natalja....@gmail.com2

Jul 8

low simulated flow rates

Hi, The information provided here is very limited to fully diagnose the issue. Please keep in mind

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low simulated flow rates

Hi, The information provided here is very limited to fully diagnose the issue. Please keep in mind

Jul 8

andry rustanto, … natalja....@gmail.com3

Jul 8

Integrating remote sensing LAI to SWAT+

Hi, Leaf Area Index development is a process that is simulated internally by SWAT+, meaning it is a

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Integrating remote sensing LAI to SWAT+

Hi, Leaf Area Index development is a process that is simulated internally by SWAT+, meaning it is a

Jul 8

Miguel Rodrigues, natalja....@gmail.com2

Jul 8

Implementing reservois post-watershed delineation step

Hi Miguel, This largely depends on your initial setup. In short: if this wasn't considered from

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Implementing reservois post-watershed delineation step

Hi Miguel, This largely depends on your initial setup. In short: if this wasn't considered from

Jul 8

Rashila Sapkota, … natalja....@gmail.com3

Jul 8

SWAT+ Calibration Guidance

Hi, To answer your questions: 1. This knowledge is available only to you as the model creator. You

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SWAT+ Calibration Guidance

Hi, To answer your questions: 1. This knowledge is available only to you as the model creator. You

Jul 8

bharadwaj mandala2

Jul 6

Help with SWAT+ Calibration: Simulated Flow Much Higher Than Observed

Hello All, I am doing calibration step in SWAT+ (RSWAT) using the weather data; however, the

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Help with SWAT+ Calibration: Simulated Flow Much Higher Than Observed

Hello All, I am doing calibration step in SWAT+ (RSWAT) using the weather data; however, the

Jul 6

Jul 3

SWAT+ GWFLOW: Groundwater recharge (rech) much lower than soil profile percolation

Hello everyone, I am currently working with a SWAT+ model coupled with GWFLOW and have encountered an

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SWAT+ GWFLOW: Groundwater recharge (rech) much lower than soil profile percolation

Hello everyone, I am currently working with a SWAT+ model coupled with GWFLOW and have encountered an

Jul 3

Thamiris Fontoura

Jul 1

QSWAT+ predefined watershed: fel.tif not created/used during Create Landscape

Hi everyone, I am working with QSWAT+ using a predefined watershed and channel network, not automatic

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QSWAT+ predefined watershed: fel.tif not created/used during Create Landscape

Hi everyone, I am working with QSWAT+ using a predefined watershed and channel network, not automatic

Jul 1

Misbah Mehak, Nancy B. Sammons2

Jun 30

Unable to run SWAT+ due to this error

Misbah: I will start by looking at your 'soils.sol' file located in the txtinout folder,

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Unable to run SWAT+ due to this error

Misbah: I will start by looking at your 'soils.sol' file located in the txtinout folder,

Jun 30

bharadwaj mandala, Chris George2

Jun 29

Need Help Resolving 'Conversion from type DBNull to type Integer is not valid' Error During Weather Data Import

Try removing the blank lines in pcpINDEX.txt Chris On 6/29/2026 6:30 PM, bharadwaj mandala wrote:

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Need Help Resolving 'Conversion from type DBNull to type Integer is not valid' Error During Weather Data Import

Try removing the blank lines in pcpINDEX.txt Chris On 6/29/2026 6:30 PM, bharadwaj mandala wrote:

Jun 29

Girum Getachew, Chris George3

Jun 22

Thank you Chris Skip my question, the problem solved. On Monday, June 22, 2026, Chris George <

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Thank you Chris Skip my question, the problem solved. On Monday, June 22, 2026, Chris George <

Jun 22

Scott Nelson, Chris George2

Jun 20

Definitions for output tables

Hover over wateryld in the Choose variables panel. Click All so you can see all the variables in this

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Definitions for output tables

Hover over wateryld in the Choose variables panel. Click All so you can see all the variables in this

Jun 20

Scott Nelson, Chris George2

Jun 20

Is it normal to have gaps in HRU's across the landscape?

Simple answer: yes in appearance, no in actuality. When you eliminate HRUs, in the data the others

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Is it normal to have gaps in HRU's across the landscape?

Simple answer: yes in appearance, no in actuality. When you eliminate HRUs, in the data the others

Jun 20

Fereshteh Kordrostami

Jun 11

Question about using STATSGO2 soil map with QSWAT+ built-in STATSGO db/lookup table

Hello all, I downloaded the STATSGO2 spatial and tabular data from USDA/NRCS Web Soil Survey for

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Question about using STATSGO2 soil map with QSWAT+ built-in STATSGO db/lookup table

Hello all, I downloaded the STATSGO2 spatial and tabular data from USDA/NRCS Web Soil Survey for

Jun 11

Yuxiang Ren, Chris George2

Jun 9

Multiple lake outlets ignored warning

Is there a reason for using a release of QSWAT from 2024? The NULL arises from the BasinNo field in

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Multiple lake outlets ignored warning

Is there a reason for using a release of QSWAT from 2024? The NULL arises from the BasinNo field in

Jun 9

Eskinder Zinabu Belachew, Nancy B. Sammons2

Jun 8

no or zero simulated flows at outlet channel

Eskinder: Send me your current txinout folder and I will take a look. Thanks, Nancy From: qswatplus@

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no or zero simulated flows at outlet channel

Eskinder: Send me your current txinout folder and I will take a look. Thanks, Nancy From: qswatplus@

Jun 8

Rashila Sapkota, Nancy B. Sammons2

Jun 5

Request for SWAT-Compatible Soil Map File for HRU Creatio

Rashila: Dr. Bawa and his team have updated the SSURGO and STATGO databases. You can find these at

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Request for SWAT-Compatible Soil Map File for HRU Creatio

Rashila: Dr. Bawa and his team have updated the SSURGO and STATGO databases. You can find these at

Jun 5

RAJESH RANJAN, Chris George2

Jun 4

OUTLET POINTS ARE NOT VISIBLE ON LAYER

The problem was fixed in QSWAT+ 3.2.1. What version are you using? You don't see the symbol for a

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OUTLET POINTS ARE NOT VISIBLE ON LAYER

The problem was fixed in QSWAT+ 3.2.1. What version are you using? You don't see the symbol for a

Jun 4

Chris George, … RAJESH RANJAN3

Jun 4

QSWAT and QSWAT+ available for QGIS 3.44

same issue here also. On Friday, March 27, 2026 at 4:24:02 AM UTC+5:30 egla...@gmail.com wrote: Chris

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QSWAT and QSWAT+ available for QGIS 3.44

same issue here also. On Friday, March 27, 2026 at 4:24:02 AM UTC+5:30 egla...@gmail.com wrote: Chris

Jun 4

Saba Shaghaghi, … Chris George5

May 29

SWAT+ Delineation and HPC running error

If watershed delineation comes up with a different boundary than the one you think is correct, you

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SWAT+ Delineation and HPC running error

If watershed delineation comes up with a different boundary than the one you think is correct, you

May 29

May 29

Persistent QSWAT Error in delineate watersheds

New to QSWAT. Thanks for any help! Failed to remove old inlet/outlet file C:\Users\scott\OneDrive\

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Persistent QSWAT Error in delineate watersheds

New to QSWAT. Thanks for any help! Failed to remove old inlet/outlet file C:\Users\scott\OneDrive\

May 29

Rashiid Abdi Dugsiiye, Abdurrahman Aweis Ali4

May 29

Problem with weather data import

Sure, here it is. On Mon, May 25, 2026 at 3:05 AM Abdurrahman Aweis Ali <aw...@siu.edu.so>

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Problem with weather data import

Sure, here it is. On Mon, May 25, 2026 at 3:05 AM Abdurrahman Aweis Ali <aw...@siu.edu.so>

May 29

Rashiid Abdi Dugsiiye

May 18

Problems importing weather data files

'm using an updated version of Swat Plus 3.2.3 & Qswat 3.0.3, but i'm still having

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Problems importing weather data files

'm using an updated version of Swat Plus 3.2.3 & Qswat 3.0.3, but i'm still having

May 18

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