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Welcome to the SWAT+ model user discussion group.

Please note this group is for questions and discussion related to the model itself, not the editor or the GIS interfaces. 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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Be happy always, Nancy B. Sammons2

10:43 AM

Running my swat+ editor gives me this error

Please send me your current txtinout folder and I will take a look. Nancy From: swatplus@googlegroups

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Running my swat+ editor gives me this error

Please send me your current txtinout folder and I will take a look. Nancy From: swatplus@googlegroups

10:43 AM

Mario Fomaca Jr

9:54 AM

POINT SOURCE UNITS

Hi everyone, I'm struggling to understand the correct units for point‑source inputs in SWAT+, and

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POINT SOURCE UNITS

Hi everyone, I'm struggling to understand the correct units for point‑source inputs in SWAT+, and

9:54 AM

Mario Fomaca Jr, Natalja C.3

9:54 AM

Point Source Input in SWAT+

Thank you! Em sexta-feira, 20 de fevereiro de 2026 às 11:19:35 UTC-6, Natalja C. escreveu: Hello,

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Point Source Input in SWAT+

Thank you! Em sexta-feira, 20 de fevereiro de 2026 às 11:19:35 UTC-6, Natalja C. escreveu: Hello,

9:54 AM

SAYONTONI GOSWAMI2

9:54 AM

On Wed, Feb 25, 2026 at 3:39 PM SAYONTONI GOSWAMI <sg2...@ce.jgec.ac.in> wrote: Please update

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On Wed, Feb 25, 2026 at 3:39 PM SAYONTONI GOSWAMI <sg2...@ce.jgec.ac.in> wrote: Please update

9:54 AM

Feb 26

Submit your Abstracts and Register for SWAT 2026 in Greece

Join us June 2026 in Greece The next SWAT Conference will be held at Aristotle University of

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Submit your Abstracts and Register for SWAT 2026 in Greece

Join us June 2026 in Greece The next SWAT Conference will be held at Aristotle University of

Feb 26

Grmay Kassa Brhane, Chris George2

Feb 25

You should check the SWAT+ log for any more information: button at bottom right to open messages

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You should check the SWAT+ log for any more information: button at bottom right to open messages

Feb 25

Kumar Aryal, Mahesh Tapas2

Feb 24

Usersoil error?

I remember getting a similar (divide by zero) error a long time back. I don't remember how we

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Usersoil error?

I remember getting a similar (divide by zero) error a long time back. I don't remember how we

Feb 24

youn, Natalja C.4

Feb 24

SWAT+ trouble : it does not run anything

Please read the instructions clearly. There is no "exe close" if you run it from a command

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SWAT+ trouble : it does not run anything

Please read the instructions clearly. There is no "exe close" if you run it from a command

Feb 24

Halinishi Yusuf

Feb 24

Extremely deep heads in Gwflow

Hi all, I am simulating ground water storage in shallow alluvial aquifers and the observed heads are

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Extremely deep heads in Gwflow

Hi all, I am simulating ground water storage in shallow alluvial aquifers and the observed heads are

Feb 24

Halinishi Yusuf

Feb 24

Extremely deep state head

Hi all, I am simulating groundwater storage in shallow aquifers using gwflow in sandy ephemeral

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Extremely deep state head

Hi all, I am simulating groundwater storage in shallow aquifers using gwflow in sandy ephemeral

Feb 24

Grmay Kassa Brhane

Feb 24

Requesting Clarification

Dear, I am working on SWAT+ modeling for groundwater estimation, and I have five river gauges from

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Requesting Clarification

Dear, I am working on SWAT+ modeling for groundwater estimation, and I have five river gauges from

Feb 24

최혜빈, Natalja C.2

Feb 20

Question on Time-Varying Channel External Load for Nonpoint Source TP in SWAT+

Hello, It seems there might be a mix-up in the conceptual model setup regarding how SWAT+ handles

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Question on Time-Varying Channel External Load for Nonpoint Source TP in SWAT+

Hello, It seems there might be a mix-up in the conceptual model setup regarding how SWAT+ handles

Feb 20

Engr. Moazzam Mushtaq, Natalja C.2

Feb 20

Irrigation Water Source in SWAT+ for Large HRU Models

Hello, To answer: " what water source does SWAT+ assume by default?" --> there is no

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Irrigation Water Source in SWAT+ for Large HRU Models

Hello, To answer: " what water source does SWAT+ assume by default?" --> there is no

Feb 20

Katie, Natalja C.2

Feb 20

mgt_out.txt fertilizer print error?

Hello, It might be a print error, especially is you do not have a elem_p fertiliser in your database.

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mgt_out.txt fertilizer print error?

Hello, It might be a print error, especially is you do not have a elem_p fertiliser in your database.

Feb 20

Camilla Negri, Natalja C.2

Feb 20

channel_sdmorph_day.txt / toolbox

Hello, Are you sure you are not confusing channel_sdmorph_day.txt and channel_sd_day.txt? It is very

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channel_sdmorph_day.txt / toolbox

Hello, Are you sure you are not confusing channel_sdmorph_day.txt and channel_sd_day.txt? It is very

Feb 20

Dogil Lee, Natalja C.2

Feb 20

Initial nutrient concentration by each soil layer

Hello, It is now impossible to assign different the nutriment levels to different soil layers. The

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Initial nutrient concentration by each soil layer

Hello, It is now impossible to assign different the nutriment levels to different soil layers. The

Feb 20

Mario Fomaca Jr, Natalja C.3

Feb 20

Performance Drop After Updating SWAT+ Revision

Hello, To answer to " However, after switching to these newer revisions, the performance at my

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Performance Drop After Updating SWAT+ Revision

Hello, To answer to " However, after switching to these newer revisions, the performance at my

Feb 20

Erika, Natalja C.2

Feb 20

Modelling Future Streamflow

Hello Erika, You followed a workflow, and I do not see any major issues, but the: - "projected

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Modelling Future Streamflow

Hello Erika, You followed a workflow, and I do not see any major issues, but the: - "projected

Feb 20

Paige B, Nancy B. Sammons3

Feb 20

Reservoir Error

Here it is. Thank You! https://drive.google.com/file/d/12hdOcEpJGTQTEmC_QJw9bv78S8Ov6Fws/view?usp=

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Reservoir Error

Here it is. Thank You! https://drive.google.com/file/d/12hdOcEpJGTQTEmC_QJw9bv78S8Ov6Fws/view?usp=

Feb 20

SAYONTONI GOSWAMI

Feb 20

SWAT Plus Execution issue

Dear SWAT plus user Discussion group, Currently, I am facing problems in step 3 edit input and run

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SWAT Plus Execution issue

Dear SWAT plus user Discussion group, Currently, I am facing problems in step 3 edit input and run

Feb 20

Abdennabi ALITANE, Nancy B. Sammons2

Feb 18

SWAT+ Execution Issue

Abdennabi: Please send me your current txtinout folder and I will take a look. Nancy From: swatplus@

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SWAT+ Execution Issue

Abdennabi: Please send me your current txtinout folder and I will take a look. Nancy From: swatplus@

Feb 18

Glenn O'Neil, Nancy B. Sammons2

Feb 18

Filter strip source code error?

Glenn: I believe you are right. Give me a bit to check with Dr. Arnold and I will get back to you

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Filter strip source code error?

Glenn: I believe you are right. Give me a bit to check with Dr. Arnold and I will get back to you

Feb 18

Grmay Kassa Brhane, Chris George2

Feb 16

Requesting Help

It is not clear from your picture where you think something is missing. Are you sure you need to mark

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Requesting Help

It is not clear from your picture where you think something is missing. Are you sure you need to mark

Feb 16

Mohammad Jaber, Nancy B. Sammons2

Feb 13

Model scenarios does not change the result

Did you add the new weather files in the interface? From: swat...@googlegroups.com <swatplus@

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Model scenarios does not change the result

Did you add the new weather files in the interface? From: swat...@googlegroups.com <swatplus@

Feb 13

Rhollthan Tubale

Feb 9

Sub-daily/Hourly Ponds Ouput

Goo day, Can I ask if there is a way to get the sub-daily/hourly outflows of Ponds in the model? We

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Sub-daily/Hourly Ponds Ouput

Goo day, Can I ask if there is a way to get the sub-daily/hourly outflows of Ponds in the model? We

Feb 9

poojitha kondeti2

Feb 9

Issue with SWAT+ Water Allocation Module Using Reservoir and Aquifer Irrigation

Dear Sir/Madam, I am currently facing an issue while running SWAT+ when implementing irrigation using

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Issue with SWAT+ Water Allocation Module Using Reservoir and Aquifer Irrigation

Dear Sir/Madam, I am currently facing an issue while running SWAT+ when implementing irrigation using

Feb 9

Paige B, Chris George2

Feb 6

Inputting a Lake as a Reservoir in SWAT+

I doubt the errors you report are directly caused by adding the lake, but I suspect you may not be

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Inputting a Lake as a Reservoir in SWAT+

I doubt the errors you report are directly caused by adding the lake, but I suspect you may not be

Feb 6

Athira K, … Nancy B. Sammons6

Feb 5

forrtl: error (73): floating divide by zero

Deswita: I may need your complete txtinout folder, but we can start by sending your 'weather-sta.

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forrtl: error (73): floating divide by zero

Deswita: I may need your complete txtinout folder, but we can start by sending your 'weather-sta.

Feb 5

Joana Eichenberger, henryc4

Jan 26

values in basin_wb_aa is not the average of basin_wb_yr

Hi Joana, The lower value in basin_wb_aa could mean that the sum over the printable period is divided

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values in basin_wb_aa is not the average of basin_wb_yr

Hi Joana, The lower value in basin_wb_aa could mean that the sum over the printable period is divided

Jan 26

江浩弘, Nancy B. Sammons2

Jan 23

forrtl: error (72): floating overflow

Thank you for the email and including the txtinout. I will download your file land try and debug it.

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forrtl: error (72): floating overflow

Thank you for the email and including the txtinout. I will download your file land try and debug it.

Jan 23

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