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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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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

Mario Fomaca Jr2

Feb 5

Performance Drop After Updating SWAT+ Revision

Hello everyone, Last year I calibrated my model using SWAT+ Revision 61.0.1 in SWAT+ CUP and achieved

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Performance Drop After Updating SWAT+ Revision

Hello everyone, Last year I calibrated my model using SWAT+ Revision 61.0.1 in SWAT+ CUP and achieved

Feb 5

Feb 5

Initial nutrient concentration by each soil layer

Hello all, I have been working on transplanting SWAT2012 info to SWAT+, and encountered a problem. In

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Initial nutrient concentration by each soil layer

Hello all, I have been working on transplanting SWAT2012 info to SWAT+, and encountered a problem. In

Feb 5

Jan 27

channel_sdmorph_day.txt / toolbox

Hi there, I'm getting the attached error that channel_sdmorph_day.txt does not exist, however

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channel_sdmorph_day.txt / toolbox

Hi there, I'm getting the attached error that channel_sdmorph_day.txt does not exist, however

Jan 27

Jan 26

mgt_out.txt fertilizer print error?

Hello, I'm trying to test to make sure my management matches my decision tables. Whatever

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mgt_out.txt fertilizer print error?

Hello, I'm trying to test to make sure my management matches my decision tables. Whatever

Jan 26

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

Ana Luisa Rocha Protasio, Chris George2

Jan 23

You need to be more precise about what you mean by the plugin not being available. Not available on

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You need to be more precise about what you mean by the plugin not being available. Not available on

Jan 23

Jan 22

new release Water allocation

Hello everyone, Any prediction for a new release of the "water allocation" module? "I

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new release Water allocation

Hello everyone, Any prediction for a new release of the "water allocation" module? "I

Jan 22

Francine Viana, Nancy B. Sammons3

Jan 22

PEST SWAT+ ERROR

Hello everyone, Any prediction for a new release of the "water allocation" module? "I

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PEST SWAT+ ERROR

Hello everyone, Any prediction for a new release of the "water allocation" module? "I

Jan 22

Jan 22

Does anyone know what might cause SWAT+ to fail during execution

Hi All, After adjusting some reservoir initialization parameters, SWAT+ produced the following error

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Does anyone know what might cause SWAT+ to fail during execution

Hi All, After adjusting some reservoir initialization parameters, SWAT+ produced the following error

Jan 22

Engr. Moazzam Mushtaq

Jan 15

Irrigation Water Source in SWAT+ for Large HRU Models

Dear Sir/Madam, I am working on a basin-scale SWAT+ model that is running successfully. The model

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Irrigation Water Source in SWAT+ for Large HRU Models

Dear Sir/Madam, I am working on a basin-scale SWAT+ model that is running successfully. The model

Jan 15

楊毓婷, Pengxuan Zhu2

Jan 15

Hello! You can create the types of plant you need by yourself in the land use database; Or replace it

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Hello! You can create the types of plant you need by yourself in the land use database; Or replace it

Jan 15

Jan 14

forrtl: error (65): floating invalid

Hello I am getting the below error. I would appreciate any help you could give me. Best wishes, Girum

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forrtl: error (65): floating invalid

Hello I am getting the below error. I would appreciate any help you could give me. Best wishes, Girum

Jan 14

Jan 13

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

Hello SWAT+ Group members, I would like to ask for confirmation regarding the structural capability

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

Hello SWAT+ Group members, I would like to ask for confirmation regarding the structural capability

Jan 13

Rhollthan Tubale, … Keenan Ardiyazka5

Jan 13

Model Run Error

I think there is an issue with my PCP file format because the PCP data contains numeric values only.

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Model Run Error

I think there is an issue with my PCP file format because the PCP data contains numeric values only.

Jan 13

Teresa Jansen, … Fernando Gimeno4

Jan 9

error running SWAT+ gwflow

Hello, I'm getting the same error and I would to know if this problem was solved Thank you in

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error running SWAT+ gwflow

Hello, I'm getting the same error and I would to know if this problem was solved Thank you in

Jan 9

Faisal Mahmood, … Nancy B. Sammons6

Jan 8

Sub daily precipitation input

Rhollthan: If you change the number of years in the measured precip file(s) to 13 it will run

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Sub daily precipitation input

Rhollthan: If you change the number of years in the measured precip file(s) to 13 it will run

Jan 8

M. Fajrin Hidayat, … Nancy B. Sammons4

Jan 8

There was an error running SWAT+

Please send me your current txtinout folder. Nancy From: swat...@googlegroups.com <swatplus@

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There was an error running SWAT+

Please send me your current txtinout folder. Nancy From: swat...@googlegroups.com <swatplus@

Jan 8

chaipat chansataporn, Celray James CHAWANDA2

Jan 7

SWAT+Toolbox Problem

Please make sure you are using v3.2 for SPT, it gives more info on errors, but in the meanwhile,

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SWAT+Toolbox Problem

Please make sure you are using v3.2 for SPT, it gives more info on errors, but in the meanwhile,

Jan 7

BOURAS-CHEKIRED, Fatma-Zohra

Jan 3

Please can you help me, i blocked in this step. -- Dr Bouras Fatma Zohra Enseignante-chercheure École

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Please can you help me, i blocked in this step. -- Dr Bouras Fatma Zohra Enseignante-chercheure École

Jan 3

12/19/25

Online Advanced SWAT+ Workshop 19-22 January 2026

Join us for a SWAT+ Advanced Workshop, designed for participants with prior experience in SWAT+ model

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Online Advanced SWAT+ Workshop 19-22 January 2026

Join us for a SWAT+ Advanced Workshop, designed for participants with prior experience in SWAT+ model

12/19/25

12/16/25

Volunteer to Review SWAT Papers

Reviewers Needed! We are looking for help reviewing SWAT peer-reviewed journal papers from the

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Volunteer to Review SWAT Papers

Reviewers Needed! We are looking for help reviewing SWAT peer-reviewed journal papers from the

12/16/25

12/16/25

Join us for a SWAT Conference in Greece June 2026

‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌

unread,

Join us for a SWAT Conference in Greece June 2026

‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌

12/16/25

Moritaka Aguro, … laurie boithias5

12/14/25

Subdaily Routing

Dear Dennis, dear all, Thank you for this post, it was very helpful to me. However, I'm currently

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Subdaily Routing

Dear Dennis, dear all, Thank you for this post, it was very helpful to me. However, I'm currently

12/14/25

Camilla Negri, Nancy B. Sammons2

12/11/25

forrtl: error (65): floating invalid

Camilla: Yes, you are right, this is a problem with one or more of the soil properties. It's

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forrtl: error (65): floating invalid

Camilla: Yes, you are right, this is a problem with one or more of the soil properties. It's

12/11/25

Osman Furkan TOKGÖZ

12/8/25

PLAPS value extremely low

The basin I'm working on is fed by snowfall and has a high, rugged terrain. According to the

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PLAPS value extremely low

The basin I'm working on is fed by snowfall and has a high, rugged terrain. According to the

12/8/25

12/8/25

sediment yield sensitivity analysis

Hello, After calibrating hydrology parameters, I start doing sensitivity analysis of sediment yield.

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sediment yield sensitivity analysis

Hello, After calibrating hydrology parameters, I start doing sensitivity analysis of sediment yield.

12/8/25

atlas probest, Osman Furkan TOKGÖZ3

12/8/25

Simulated Flows ≈30× Lower Than Observed at Outlet

Are you sure that "Channel 37" is the main outlet channel? It may be not the main channel

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Simulated Flows ≈30× Lower Than Observed at Outlet

Are you sure that "Channel 37" is the main outlet channel? It may be not the main channel

12/8/25

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