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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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Thiago Ribeiro, Chris George3

Feb 16

I found a solution in another chat about similar issue. Summarizing, I renamed libgdal.so.32 to

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I found a solution in another chat about similar issue. Summarizing, I renamed libgdal.so.32 to

Feb 16

atuhwera loveline

Feb 16

Wetlands and lakes challenge.

Hi Everyone, Hope all is well here. Am currently using SWAT+ and my challenge is with lakes/ wetlands

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Wetlands and lakes challenge.

Hi Everyone, Hope all is well here. Am currently using SWAT+ and my challenge is with lakes/ wetlands

Feb 16

NERGIZ ÜZEL GÜNINI

Feb 16

qswat+ verisyon

merhaba qgis ve qswat kullanıcam ama hangi qgis versiyonunda en güzel çalışır karar veremiyorum. qgis

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qswat+ verisyon

merhaba qgis ve qswat kullanıcam ama hangi qgis versiyonunda en güzel çalışır karar veremiyorum. qgis

Feb 16

atuhwera loveline

Feb 12

WETLAND AND LAKES CHALLENGES

Dear All, Hope this gets you well. Am currently using SWAT+ model for groundwater recharge. The

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WETLAND AND LAKES CHALLENGES

Dear All, Hope this gets you well. Am currently using SWAT+ model for groundwater recharge. The

Feb 12

Matthew Lombardo2

Feb 12

Error in SWAT+ due to decision table

Hi all, I wanted to expand on my issue. I tested my model with just the management scheduels for HRUS

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Error in SWAT+ due to decision table

Hi all, I wanted to expand on my issue. I tested my model with just the management scheduels for HRUS

Feb 12

Fereshteh Kordrostami, Chris George6

Feb 12

Questions on impact of channel delineation on LSUs and using LSU shapefile

Thanks, so in short, there is no way of getting what set of original HRUs that were merged/filtered

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Questions on impact of channel delineation on LSUs and using LSU shapefile

Thanks, so in short, there is no way of getting what set of original HRUs that were merged/filtered

Feb 12

phoebe murage, … Moussa Yatta4

Feb 12

RUNNING SWAT+ REV 61.0.1_Unable to create Basin_wb_aa

Hello everyone, Does anybody know how to fix this error? I also successfully developed my model until

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RUNNING SWAT+ REV 61.0.1_Unable to create Basin_wb_aa

Hello everyone, Does anybody know how to fix this error? I also successfully developed my model until

Feb 12

Matthew Lombardo, Nancy B. Sammons4

Feb 9

Error Running SWAT+ Editor

Hi Nancy, This wasn't the case, but I had a similar issue a few months ago and remembered how to

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Error Running SWAT+ Editor

Hi Nancy, This wasn't the case, but I had a similar issue a few months ago and remembered how to

Feb 9

Grmay Kassa Brhane, Nancy B. Sammons2

Feb 5

Requesting clarification and help

Grmay Kassa: You may need to send me your current txtinout, but if you send me your 'soils.sol

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Requesting clarification and help

Grmay Kassa: You may need to send me your current txtinout, but if you send me your 'soils.sol

Feb 5

Yashas Kumar H K

Feb 5

Issue with Inlet–Recall Configuration in SWAT+ Model

Dear Connection, I am currently attempting to connect one of the headwater watersheds to the lower

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Issue with Inlet–Recall Configuration in SWAT+ Model

Dear Connection, I am currently attempting to connect one of the headwater watersheds to the lower

Feb 5

Feb 5

NO3 Leaching Location

Hello everyone. used both models for my watershed: 1. SWAT+ (No gwflow integration) 2. SWAT+ (with

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NO3 Leaching Location

Hello everyone. used both models for my watershed: 1. SWAT+ (No gwflow integration) 2. SWAT+ (with

Feb 5

Feb 5

Nitrate Leaching Results

I am new to SWAT+. I run both models: SWAT+ only and SWAT+ with gwflow. I could not find the results

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Nitrate Leaching Results

I am new to SWAT+. I run both models: SWAT+ only and SWAT+ with gwflow. I could not find the results

Feb 5

Feb 2

Dear Group, I have been experiencing an issue with my QSWAT+ project. My project covers a large

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Dear Group, I have been experiencing an issue with my QSWAT+ project. My project covers a large

Feb 2

Matthew Lombardo, yashas2

Feb 2

Issue Identifying HRU's in LSU

Try to look at the LSU report in the text file - Yashas Kumar HK, Ph.D. Postdoctoral Fellow,

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Issue Identifying HRU's in LSU

Try to look at the LSU report in the text file - Yashas Kumar HK, Ph.D. Postdoctoral Fellow,

Feb 2

Fereshteh Kordrostami

Jan 30

Impact of channel delineation on LSUs and searching an alternative for hru2.shp

Hello everyone, I have two questions: 1. Channel delineation thresholds: If lower drainage-area

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Impact of channel delineation on LSUs and searching an alternative for hru2.shp

Hello everyone, I have two questions: 1. Channel delineation thresholds: If lower drainage-area

Jan 30

Jan 30

Database error? (SQLITE)

While creating HRU i am facing problem of sqlite file. I want to use user soil standard database of

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Database error? (SQLITE)

While creating HRU i am facing problem of sqlite file. I want to use user soil standard database of

Jan 30

Matthew Lombardo

Jan 27

Time Rule or Decision Tables/Scenarios

Hi all, I am trying to irrigate an LSU for only one or two days at a time, is there a time rule for

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Time Rule or Decision Tables/Scenarios

Hi all, I am trying to irrigate an LSU for only one or two days at a time, is there a time rule for

Jan 27

Judith Eeckman, Haikal Arif2

Jan 15

How to add a new land use class ?

Hi there, Maybe you could try the Semi Automatic Classification Plugin in QGIS. You could define how

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How to add a new land use class ?

Hi there, Maybe you could try the Semi Automatic Classification Plugin in QGIS. You could define how

Jan 15

Jan 15

Extreme Sediment Output 10^12 Mg/ha in 0.01ha Catchment

Hi everyone, I'm modeling a tiny 0.01 ha mudstone badland area (all bare) using a high-res UAV

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Extreme Sediment Output 10^12 Mg/ha in 0.01ha Catchment

Hi everyone, I'm modeling a tiny 0.01 ha mudstone badland area (all bare) using a high-res UAV

Jan 15

Romitha Wickramasinghe

Jan 13

Issue with Importing Hourly Rainfall Data into SWAT+ Editor

Hi, I am trying to simulate a storm event using hourly time steps in SWAT+. Although I prepared the

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Issue with Importing Hourly Rainfall Data into SWAT+ Editor

Hi, I am trying to simulate a storm event using hourly time steps in SWAT+. Although I prepared the

Jan 13

Tulika K, Nancy B. Sammons2

Jan 7

error (73): floating divide by zero

Tulika: If this is still an issue, send me the contents of your current txtinout folder and I will

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error (73): floating divide by zero

Tulika: If this is still an issue, send me the contents of your current txtinout folder and I will

Jan 7

Matthew Lombardo

Jan 7

Flow and Nutrient Routing for Channels - Continued

Hi everyone, I am sorry for the spam. I just discovered something that might be of importance. In the

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Flow and Nutrient Routing for Channels - Continued

Hi everyone, I am sorry for the spam. I just discovered something that might be of importance. In the

Jan 7

Matthew Lombardo

Jan 7

Subbasin Routing to Channel Explanation

Hello everyone, Note: Please disregard my last emails, I was able to find what I was looking for. Can

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Subbasin Routing to Channel Explanation

Hello everyone, Note: Please disregard my last emails, I was able to find what I was looking for. Can

Jan 7

Matthew Lombardo

Jan 7

IWQ — In-stream water quality code for SWAT+

Hi all, This is a question related to the one I just posted. I want to turn off the in stream water

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IWQ — In-stream water quality code for SWAT+

Hi all, This is a question related to the one I just posted. I want to turn off the in stream water

Jan 7

Matthew Lombardo

Jan 7

In-Stream Water Quality Calculations On/Off

Hi everyone, I am trying to get my calibration to work for my nutrients, and the professor I am

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In-Stream Water Quality Calculations On/Off

Hi everyone, I am trying to get my calibration to work for my nutrients, and the professor I am

Jan 7

Fkadu Gebreyesus

Jan 7

Asking on SWAT+ usage

Hello everyone, I would appreciate guidance or best practices for setting up and running SWAT+ for a

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Asking on SWAT+ usage

Hello everyone, I would appreciate guidance or best practices for setting up and running SWAT+ for a

Jan 7

Afonso Augusto Magalhães de Araujo, celray....@gmail.com2

Jan 6

How to “freeze” calibrated parameters in the SWAT+ToolBox:

Hi, When you want to calibrate by subbasin going downstream, make sure each parameter set you add is

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How to “freeze” calibrated parameters in the SWAT+ToolBox:

Hi, When you want to calibrate by subbasin going downstream, make sure each parameter set you add is

Jan 6

Haley, … Mohamed Aboelnour5

Jan 3

Use NHD dataset to delineate watershed

Hi Natalja, This thread is extremely helpful and confirms what I have been encountering with the

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Use NHD dataset to delineate watershed

Hi Natalja, This thread is extremely helpful and confirms what I have been encountering with the

Jan 3

Greg, Chris George3

12/23/25

Watershed model with multiple lakes

Excellent. Thanks. On Tuesday, December 23, 2025 at 1:12:59 PM UTC-6 Chris George wrote: Just add

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Watershed model with multiple lakes

Excellent. Thanks. On Tuesday, December 23, 2025 at 1:12:59 PM UTC-6 Chris George wrote: Just add

12/23/25

Girum Getachew, Chris George2

12/23/25

Greetings and Questions

Assuming the outer red line is the watershed boundary as calculated by QSWAT+, the white areas are

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Greetings and Questions

Assuming the outer red line is the watershed boundary as calculated by QSWAT+, the white areas are

12/23/25

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