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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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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

Apr 8

Error running SWAT+ model (due to updatedRunning SWAT+ rev. 61.0.2

forrtl: severe (151): allocatable array is already allocated Image PC Routine Line Source swatplus-

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Error running SWAT+ model (due to updatedRunning SWAT+ rev. 61.0.2

forrtl: severe (151): allocatable array is already allocated Image PC Routine Line Source swatplus-

Apr 8

Ajewole Damilola

Apr 8

SWAT+ Calibration

I am currently calibrating SWAT+ for a forested watershed in northern Wisconsin and running into an

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SWAT+ Calibration

I am currently calibrating SWAT+ for a forested watershed in northern Wisconsin and running into an

Apr 8

marianna leone, Nancy B. Sammons2

Apr 8

climate data ethiopia

Marianna: Have you reviewed the link below? https://swat.tamu.edu/data/ From: swatplus@googlegroups.

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climate data ethiopia

Marianna: Have you reviewed the link below? https://swat.tamu.edu/data/ From: swatplus@googlegroups.

Apr 8

VIRGINIA LÓPEZ LINARES

Apr 7

Problem with "create HRUs"

Hi! When I want to create HRUs, I obtain the following error: "Failed to create HRUs: Traceback

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Problem with "create HRUs"

Hi! When I want to create HRUs, I obtain the following error: "Failed to create HRUs: Traceback

Apr 7

Apr 7

Dear SWAT+ users, During sensitivity analysis using the SWAT+ toolbox, I encountered the following

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Dear SWAT+ users, During sensitivity analysis using the SWAT+ toolbox, I encountered the following

Apr 7

Apr 2

Differences between SWAT+ rev. 61.0.2 (official) and rev. 61.0.2.61 (latest) in streamflow and sediment simulation

Dear all, I ran SWAT+ using rev. 61.0.2.61 (latest) to account for paddy-specific conditions and

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Differences between SWAT+ rev. 61.0.2 (official) and rev. 61.0.2.61 (latest) in streamflow and sediment simulation

Dear all, I ran SWAT+ using rev. 61.0.2.61 (latest) to account for paddy-specific conditions and

Apr 2

Apr 1

Senstvitity becomes zero

Dear all, I am conducting a sensitivity analysis using the SWAT+Toolbox version 3.2.0 with monthly

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Senstvitity becomes zero

Dear all, I am conducting a sensitivity analysis using the SWAT+Toolbox version 3.2.0 with monthly

Apr 1

alamtekno lestari, Nancy B. Sammons2

Mar 30

problems entering climate data

Alamtekno: The error indicates there is a problem in the 'weather-wgn.cli' file. You can

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problems entering climate data

Alamtekno: The error indicates there is a problem in the 'weather-wgn.cli' file. You can

Mar 30

Matthew Lombardo

Mar 27

Question on Nitrogen Species Units

Hello everyone, I am looking at denitrification in HRUS for my model. In the SWAT+ documentation in

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Question on Nitrogen Species Units

Hello everyone, I am looking at denitrification in HRUS for my model. In the SWAT+ documentation in

Mar 27

Liaqat Ali Shah

Mar 26

Model not catching evaporation and PET values.

Hi Swat+ Users, I am facing an issue. I am running a model in swat+editor. The model runs

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Model not catching evaporation and PET values.

Hi Swat+ Users, I am facing an issue. I am running a model in swat+editor. The model runs

Mar 26

Liaqat Ali Shah

Mar 26

Model not catching PET values

Hi Swat+ user, My model in swat+editor is not catching the pet values and gives 0 values. Can someone

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Model not catching PET values

Hi Swat+ user, My model in swat+editor is not catching the pet values and gives 0 values. Can someone

Mar 26

Mar 26

template reservoir decision table for measured outflow?

Hi! I've been trying to get a reservoir in my SWAT+ model to release water following an observed

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template reservoir decision table for measured outflow?

Hi! I've been trying to get a reservoir in my SWAT+ model to release water following an observed

Mar 26

Mar 26

Reservoir area-volume and shape coefficients

Hi! I am modelling a catchment with large water supply reservoirs and I am having several issues in

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Reservoir area-volume and shape coefficients

Hi! I am modelling a catchment with large water supply reservoirs and I am having several issues in

Mar 26

atlas probest, … 朱翔宇（路以鲲）4

Mar 26

Simulated Flows ≈30× Lower Than Observed at Outlet

Hello, may I ask if your issue has been resolved? I have encountered a similar problem as you, and I

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Simulated Flows ≈30× Lower Than Observed at Outlet

Hello, may I ask if your issue has been resolved? I have encountered a similar problem as you, and I

Mar 26

朱翔宇（路以鲲）

Mar 26

Help: Simulated vs Observed Trends Match but Values Differ Greatly

When I run runoff simulations for an When I run runoff simulations for an 当我为一个运行径流模拟时，模拟值与观测值相差，尽管它们

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Help: Simulated vs Observed Trends Match but Values Differ Greatly

When I run runoff simulations for an When I run runoff simulations for an 当我为一个运行径流模拟时，模拟值与观测值相差，尽管它们

Mar 26

Retang Mokua, Chris George5

Mar 25

Unable to add observed flow

Hi Chris, Is the reinstallation for QSWAT+ only or also the SWAT+ editor? Regards On Wednesday, 25

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Unable to add observed flow

Hi Chris, Is the reinstallation for QSWAT+ only or also the SWAT+ editor? Regards On Wednesday, 25

Mar 25

Mahabub Chowdhury, Nancy B. Sammons3

Mar 25

@ Hello Nancy, I sent the project details to your email. Mahabub On Tuesday, March 24, 2026 at 9:43:

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@ Hello Nancy, I sent the project details to your email. Mahabub On Tuesday, March 24, 2026 at 9:43:

Mar 25

MR. BONTHA SAI KIRAN

Mar 25

Follow-up on SWAT+ gwflow setup, calibration approach, and executable behavior

Dear Dr Bailey and Nancy, Thank you again for sharing the updated executable and the modified gwflow.

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Follow-up on SWAT+ gwflow setup, calibration approach, and executable behavior

Dear Dr Bailey and Nancy, Thank you again for sharing the updated executable and the modified gwflow.

Mar 25

Mar 25

SWAT+ Source Code Workshop - Online - 20-21 April 2026

𝐒𝐖𝐀𝐓+ 𝐒𝐨𝐮𝐫𝐜𝐞 𝐂𝐨𝐝𝐞 𝐖𝐨𝐫𝐤𝐬𝐡𝐨𝐩 | 𝐎𝐧𝐥𝐢𝐧𝐞 | 𝐀𝐩𝐫𝐢𝐥 20-21, 2026! Ready to dive deep into SWAT+ Fortran code?

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SWAT+ Source Code Workshop - Online - 20-21 April 2026

𝐒𝐖𝐀𝐓+ 𝐒𝐨𝐮𝐫𝐜𝐞 𝐂𝐨𝐝𝐞 𝐖𝐨𝐫𝐤𝐬𝐡𝐨𝐩 | 𝐎𝐧𝐥𝐢𝐧𝐞 | 𝐀𝐩𝐫𝐢𝐥 20-21, 2026! Ready to dive deep into SWAT+ Fortran code?

Mar 25

Richard Heal, … Mahabub Chowdhury3

Mar 23

Pathogen module

Hi all, I was getting this error when running SWAT+ with pathogens. forrtl: severe (157): Program

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Pathogen module

Hi all, I was getting this error when running SWAT+ with pathogens. forrtl: severe (157): Program

Mar 23

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

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