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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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Alex VanDeWeghe

Mar 18

Suppressing Subdaily Output

Hello, For a model running with an hourly runoff timestep, one of the largest impacts to runtime is

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Suppressing Subdaily Output

Hello, For a model running with an hourly runoff timestep, one of the largest impacts to runtime is

Mar 18

Mar 17

SWAT+ output variables for forest harvest operations

Hi everyone, I'm using SWAT+ to model sustainable forest management. I plan to use the harvest

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SWAT+ output variables for forest harvest operations

Hi everyone, I'm using SWAT+ to model sustainable forest management. I plan to use the harvest

Mar 17

Jaclyn B. Tech2

Mar 16

Submit your Abstracts and Register for SWAT 2026 in Greece

Abstracts due 1 April! Abstracts are rolling in! Submit your abstract and join us at the SWAT

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Submit your Abstracts and Register for SWAT 2026 in Greece

Abstracts due 1 April! Abstracts are rolling in! Submit your abstract and join us at the SWAT

Mar 16

Mar 15

Automated SWAT+ model creation platform for CONSU (SWATGenX)

Folks, I would like to introduce a platform I developed for creating SWAT+ models using US high-

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Automated SWAT+ model creation platform for CONSU (SWATGenX)

Folks, I would like to introduce a platform I developed for creating SWAT+ models using US high-

Mar 15

Retang Mokua, Nancy B. Sammons2

Mar 13

Retang: If you send me the contents of your current txtinout folder OR only the 'soils.sol'

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Retang: If you send me the contents of your current txtinout folder OR only the 'soils.sol'

Mar 13

Mar 13

Txtinout files missed

After running the SWAT+ editor, I looked at the TXtinout folder; some files, such as hre_let_hru,

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Txtinout files missed

After running the SWAT+ editor, I looked at the TXtinout folder; some files, such as hre_let_hru,

Mar 13

Mahabub Chowdhury

Mar 13

Question about Flow Variable Calibration

Hello, I am currently working on flow calibration and I am a bit confused about which output variable

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Question about Flow Variable Calibration

Hello, I am currently working on flow calibration and I am a bit confused about which output variable

Mar 13

Camilla Negri, … Mahabub Chowdhury3

Mar 13

channel_sdmorph_day.txt / toolbox

Hello, I am currently working on flow calibration in SWAT+ CUP and I am a bit confused about which

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channel_sdmorph_day.txt / toolbox

Hello, I am currently working on flow calibration in SWAT+ CUP and I am a bit confused about which

Mar 13

melsew amsalu, Chris George2

Mar 13

Remember that HRU creation usually involves filtering out small HRUs. If you look at the actual HRUs

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Remember that HRU creation usually involves filtering out small HRUs. If you look at the actual HRUs

Mar 13

IMUWAHEN AIGBEDION, Chris George2

Mar 12

Python error problem with SWAT+3.12

This is probably a knock-on error caused by an earlier one: you need to look at the whole log. Chris

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Python error problem with SWAT+3.12

This is probably a knock-on error caused by an earlier one: you need to look at the whole log. Chris

Mar 12

Habanyati Estone

Mar 12

Kindly help me resolve this error. I am trying to run swat+ but got this error below. Traceback (most

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Kindly help me resolve this error. I am trying to run swat+ but got this error below. Traceback (most

Mar 12

Mar 12

SWAT+editor does not work

Dear all, During my run of the SWAT+ editor, I encountered the following errors. Could someone help

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SWAT+editor does not work

Dear all, During my run of the SWAT+ editor, I encountered the following errors. Could someone help

Mar 12

Fereshteh Kordrostami, Alex VanDeWeghe3

Mar 10

Green–Ampt Infiltration and Hourly Precipitation Input in SWAT+

Thanks Alex! That was very helpful. Best, Fereshteh On Tuesday, March 10, 2026 at 8:06:01 AM UTC-7

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Green–Ampt Infiltration and Hourly Precipitation Input in SWAT+

Thanks Alex! That was very helpful. Best, Fereshteh On Tuesday, March 10, 2026 at 8:06:01 AM UTC-7

Mar 10

melsew amsalu, Abdennabi ALITANE2

Mar 10

model parmeter change

Dear Melsew, Yes, it is possible to change model parameters for a specific HRU, If you are using the

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model parmeter change

Dear Melsew, Yes, it is possible to change model parameters for a specific HRU, If you are using the

Mar 10

Mar 5

object.prt and capturing stream flow

I'm hoping someone can help me better understand how SWAT+ handles printing channel hydrographs,

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object.prt and capturing stream flow

I'm hoping someone can help me better understand how SWAT+ handles printing channel hydrographs,

Mar 5

yohann faverais, Nancy B. Sammons2

Mar 5

Problem adding carbon.module.f90

Yohann: This is an odd simulation error. Please send me the contents of your current txtinout folder

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Problem adding carbon.module.f90

Yohann: This is an odd simulation error. Please send me the contents of your current txtinout folder

Mar 5

Alex VanDeWeghe

Mar 4

Codes.bsn "event" vs "gampt"

Hello, I am attempting to run a SWAT+ model with the sub-daily green-ampt infiltration method and am

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Codes.bsn "event" vs "gampt"

Hello, I am attempting to run a SWAT+ model with the sub-daily green-ampt infiltration method and am

Mar 4

Liaqat Ali Shah

Mar 4

Issue in SWAT+ Model running

Hi everyone, While running the model, I face this issue. Can somebody help please?

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Issue in SWAT+ Model running

Hi everyone, While running the model, I face this issue. Can somebody help please?

Mar 4

Karles Allesandro Pescoran Heredia

Mar 4

Soil conductivity parameter - soil vs. wetland

Hello everyone. I would like to know the difference between the saturated hydraulic conductivity

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Soil conductivity parameter - soil vs. wetland

Hello everyone. I would like to know the difference between the saturated hydraulic conductivity

Mar 4

Mar 4

Adding data as condition variable for decision table

Hi all, I am working on a SWAT+ model and am looking to implement more complex, adaptive management

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Adding data as condition variable for decision table

Hi all, I am working on a SWAT+ model and am looking to implement more complex, adaptive management

Mar 4

Mar 4

Wildfire and Hydrology Bugs

Hi to the SWAT+ community, I'm stuck getting a fire management operation to actually execute in

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Wildfire and Hydrology Bugs

Hi to the SWAT+ community, I'm stuck getting a fire management operation to actually execute in

Mar 4

Mar 4

Wildfire model and management schedules

Hi everyone, I'm trying to model channel sedimentation from ~50 historical wildfires across a

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Wildfire model and management schedules

Hi everyone, I'm trying to model channel sedimentation from ~50 historical wildfires across a

Mar 4

youn, … Nancy B. Sammons6

Mar 2

SWAT+ trouble : it does not run anything

Youn: If you send me the contents of your txtinout folder, I will take a look at this for you. Thank

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SWAT+ trouble : it does not run anything

Youn: If you send me the contents of your txtinout folder, I will take a look at this for you. Thank

Mar 2

Mar 2

Hydrology Mass Balance Check

Hello, Before calibrating my model, one of the first steps was to check the hydrology mass balance. I

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Hydrology Mass Balance Check

Hello, Before calibrating my model, one of the first steps was to check the hydrology mass balance. I

Mar 2

Be happy always, Nancy B. Sammons3

Mar 2

Running my swat+ editor gives me this error

Here it is On Friday, 27 February 2026 at 16:43:35 UTC+1 nancy.sammons wrote: Please send me your

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Running my swat+ editor gives me this error

Here it is On Friday, 27 February 2026 at 16:43:35 UTC+1 nancy.sammons wrote: Please send me your

Mar 2

Mario Fomaca Jr

Feb 27

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

Feb 27

Mario Fomaca Jr, Natalja C.3

Feb 27

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,

Feb 27

SAYONTONI GOSWAMI2

Feb 27

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

Feb 27

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

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