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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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Dec 16

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

Dec 16

Dec 16

Join us for a SWAT Conference in Greece June 2026

‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌

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Join us for a SWAT Conference in Greece June 2026

‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌ ͏ ‌

Dec 16

Moritaka Aguro, … laurie boithias5

Dec 14

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

Dec 14

Camilla Negri, Nancy B. Sammons2

Dec 11

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

Dec 11

Osman Furkan TOKGÖZ

Dec 8

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

Dec 8

Dec 8

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.

Dec 8

atlas probest, Osman Furkan TOKGÖZ3

Dec 8

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

Dec 8

Osman Furkan TOKGÖZ

Dec 8

Excessive Sediment Delivery Ratio in some channels

Hello. When I check the model I built using SWAT+, the in-stream sediment delivery shown in the SWAT+

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Excessive Sediment Delivery Ratio in some channels

Hello. When I check the model I built using SWAT+, the in-stream sediment delivery shown in the SWAT+

Dec 8

Dec 5

Irrigate configurate

Hello I would like to configure my model to irrigate a crop using two water sources with only one

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Irrigate configurate

Hello I would like to configure my model to irrigate a crop using two water sources with only one

Dec 5

Dec 5

Configuration of dtl irrigation

Hello I would like to configure my model to irrigate a crop using two water sources with only one

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Configuration of dtl irrigation

Hello I would like to configure my model to irrigate a crop using two water sources with only one

Dec 5

Ana Rincon, Nancy B. Sammons2

Dec 3

Error in running SWAT+

Ana: The model is indicating there is a problem with at least one of the properties in the 'soils

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Error in running SWAT+

Ana: The model is indicating there is a problem with at least one of the properties in the 'soils

Dec 3

Dec 2

SWAT+ editor error

Hello, in my soil lookup table there is no value 10 but the soil dataset I have cannot be changed,

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SWAT+ editor error

Hello, in my soil lookup table there is no value 10 but the soil dataset I have cannot be changed,

Dec 2

Mahabub Chowdhury

Dec 2

Point-source appears in SQLite but all recall output files are zero

Hello everyone I imported daily point-source files (eg, CAFO_33.csv) through the SWAT+ Editor. The

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Point-source appears in SQLite but all recall output files are zero

Hello everyone I imported daily point-source files (eg, CAFO_33.csv) through the SWAT+ Editor. The

Dec 2

Dec 2

Grassed Waterways and Filter Strips

Hi all, I am running a fairly simple and spatially small model on SWAT + and have calibrated. Now I

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Grassed Waterways and Filter Strips

Hi all, I am running a fairly simple and spatially small model on SWAT + and have calibrated. Now I

Dec 2

Maukthik Srivathsan J, Saeed Golian2

Dec 2

SWAT+ run by executing source code

Hi Can I ask if you got a solution/answer regarding modelling the potholes/wetlands in SWAT+ model?

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SWAT+ run by executing source code

Hi Can I ask if you got a solution/answer regarding modelling the potholes/wetlands in SWAT+ model?

Dec 2

Dec 2

Re: SWATplus check give zero as cn value for the WETW, high value for forest than agrl

Dear all, I have calibrated the SWATPlus model for the period from 2011 to 2022 using daily

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Re: SWATplus check give zero as cn value for the WETW, high value for forest than agrl

Dear all, I have calibrated the SWATPlus model for the period from 2011 to 2022 using daily

Dec 2

Nijesh p, Nancy B. Sammons2

Dec 2

SWAT+ running error

Nijesh: Send me your current txtinout folder in a compressed format and I will take a look at this

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SWAT+ running error

Nijesh: Send me your current txtinout folder in a compressed format and I will take a look at this

Dec 2

PAUL JULIUS, Nancy B. Sammons2

Nov 25

Paul: I will take a look at this, please send me your current txtinout folder in compressed format.

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Paul: I will take a look at this, please send me your current txtinout folder in compressed format.

Nov 25

Mahabub Chowdhury

Nov 25

Nitrogen (N) or Phosphorus (P) concentrations (mg/L)

Hello everyone, I want to know whether SWAT+ provides any Nitrogen (N) or Phosphorus (P)

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Nitrogen (N) or Phosphorus (P) concentrations (mg/L)

Hello everyone, I want to know whether SWAT+ provides any Nitrogen (N) or Phosphorus (P)

Nov 25

Nov 25

hyd-sed-lte.cha table

Hello all, I wanna change the value of a few parameters here after calibration stage! but as

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hyd-sed-lte.cha table

Hello all, I wanna change the value of a few parameters here after calibration stage! but as

Nov 25

Edwin Alejandro Chávez Esquivel, Jon Larrinaga López4

Nov 25

forrtl: error (65): floating invalid / nut _nminrl

Hi! Yes, I was able to solve it changing the user_soil file. In my case, it was the soil depth of

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forrtl: error (65): floating invalid / nut _nminrl

Hi! Yes, I was able to solve it changing the user_soil file. In my case, it was the soil depth of

Nov 25

Rodrigo Marinao Rivas, … Morty14

Nov 17

Problem with Decision Tables for LULCC in SWAT+ v2.0.4

Dear all: Has anyone managed to implement this land use update? Why did I generate the file "

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Problem with Decision Tables for LULCC in SWAT+ v2.0.4

Dear all: Has anyone managed to implement this land use update? Why did I generate the file "

Nov 17

Nov 17

I encountered this error while running SWAT+rev 61.0.1 I have checked climate data but could not

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I encountered this error while running SWAT+rev 61.0.1 I have checked climate data but could not

Nov 17

Oshadhee Perera

Nov 17

SWAT+ editor and SWAT+ Toolbox outputs are different. Why is that?

Hi all, I completed a model run in the SWAT+ Editor for my river basin and extracted the simulated

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SWAT+ editor and SWAT+ Toolbox outputs are different. Why is that?

Hi all, I completed a model run in the SWAT+ Editor for my river basin and extracted the simulated

Nov 17

Nov 17

Questions regarding SWAT+ wetland routing

Hello all, I am modeling wetlands using SWAT+ and found out that it has very low Organic N, NO2, NH3,

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Questions regarding SWAT+ wetland routing

Hello all, I am modeling wetlands using SWAT+ and found out that it has very low Organic N, NO2, NH3,

Nov 17

Ashwin Ghimire, Chris George2

Nov 17

Watershed not covering the whole DEM

The watershed is the area that QSWAT+ calculates as flowing to your outlet. You cannot determine this

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Watershed not covering the whole DEM

The watershed is the area that QSWAT+ calculates as flowing to your outlet. You cannot determine this

Nov 17

Ashwin Ghimire, Chris George5

Nov 13

Created Streams not covering the full watershed

As I said, burning in does not create any streams: they are never in your model. Reduce the

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Created Streams not covering the full watershed

As I said, burning in does not create any streams: they are never in your model. Reduce the

Nov 13

Nov 12

Problem with Scenario Land Use

Dear all I am using the decision table of SWAT+ to modify the land use of my HRUs, converting all my

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Problem with Scenario Land Use

Dear all I am using the decision table of SWAT+ to modify the land use of my HRUs, converting all my

Nov 12

아디타마페르지안요가, Filipe S C Pinhati2

Nov 12

Run fecal bacteria in SWAT+

Up to when I researched it in 2019, SWAT+ did not have a Bacteria module. I am not sure if it had

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Run fecal bacteria in SWAT+

Up to when I researched it in 2019, SWAT+ did not have a Bacteria module. I am not sure if it had

Nov 12

María Eugenia Borges, Fernando Gimeno2

Nov 11

Sub-daily simulations - Flow magnitude issue

Hello M Borges, Have you found more about this issue? Best regard On Wednesday, October 15, 2025 at

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Sub-daily simulations - Flow magnitude issue

Hello M Borges, Have you found more about this issue? Best regard On Wednesday, October 15, 2025 at

Nov 11

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