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QSWAT user group is a forum to discuss the QGIS-SWAT interface.
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Chris George
,
AbdAlmenem Altobeh
2
Apr 27
QSWAT available for QGIS 4
I have installed the QSWAT but it not compatible with QGS 4 see screenshot below On Mon, Apr 20, 2026
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QSWAT available for QGIS 4
I have installed the QSWAT but it not compatible with QGS 4 see screenshot below On Mon, Apr 20, 2026
Apr 27
subham roy
Apr 24
Error in SWAT Weather Data Input – “Index was outside the bounds of the array (line 0)”
Hello everyone, I am working with the SWAT model using QSWAT and facing an issue while loading
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Error in SWAT Weather Data Input – “Index was outside the bounds of the array (line 0)”
Hello everyone, I am working with the SWAT model using QSWAT and facing an issue while loading
Apr 24
Naufal Dwiakram
Apr 21
Error Reading User Soil Table
Hello, I'm trying to read my user soil table, but an error occurs as attached bellow image. I
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Error Reading User Soil Table
Hello, I'm trying to read my user soil table, but an error occurs as attached bellow image. I
Apr 21
Benjamin Donkor
,
Filipe S C Pinhati
3
Apr 15
RESERVOIR DAILY OUTFLOWS NOT AVAILABLE
Thanks, Filipe, for your assistance. Regards, Benjamin. On Tuesday, November 11, 2025 at 9:49:15 AM
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RESERVOIR DAILY OUTFLOWS NOT AVAILABLE
Thanks, Filipe, for your assistance. Regards, Benjamin. On Tuesday, November 11, 2025 at 9:49:15 AM
Apr 15
Benjamin Donkor
Apr 15
CROP YIELD CALIBRATION
Hello all, I am working on calibrating corn and soybean yields for my watershed in QSWAT, but I seem
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CROP YIELD CALIBRATION
Hello all, I am working on calibrating corn and soybean yields for my watershed in QSWAT, but I seem
Apr 15
Yong Tian
, …
Chris George
6
Apr 15
ArcSWAT for ArcGIS Pro
I don't know what you did but there is little point in following a video describing QSWAT+ to
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ArcSWAT for ArcGIS Pro
I don't know what you did but there is little point in following a video describing QSWAT+ to
Apr 15
Letícia Lopes Martins
,
Chris George
2
Apr 15
QSWAT error Access database permission
I don't understand this, but there are some things you can do. 0. Make sure you don't have
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QSWAT error Access database permission
I don't understand this, but there are some things you can do. 0. Make sure you don't have
Apr 15
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
Chris George
,
Eric G Lappala
2
Mar 26
QSWAT and QSWAT+ available for QGIS 3.44
Chris After installing QSWAT+ 3.2.0 there is a problem in setting the outlet points - they do not
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QSWAT and QSWAT+ available for QGIS 3.44
Chris After installing QSWAT+ 3.2.0 there is a problem in setting the outlet points - they do not
Mar 26
Girum Getachew
,
Chris George
4
Mar 20
QSWAT+ output for sub-basins
Thank you, Dear Chris George I hope the developer group of SWAT+ will update this issue. On Thursday,
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QSWAT+ output for sub-basins
Thank you, Dear Chris George I hope the developer group of SWAT+ will update this issue. On Thursday,
Mar 20
Awel Seid
,
Chris George
2
Mar 17
NumPy compatibility issue with QSWAT+ 3.1.2 on QGIS 3.44.8 (Python 3.12)
Thank you for your comments. I am glad you were able to resolve the issue. There are many possible
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NumPy compatibility issue with QSWAT+ 3.1.2 on QGIS 3.44.8 (Python 3.12)
Thank you for your comments. I am glad you were able to resolve the issue. There are many possible
Mar 17
Grace
,
Chris George
2
Mar 2
QSWAT Visual Missing Soils
It is not clear to me what you think the problem is. Your picture apparently shows the subbasins in
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QSWAT Visual Missing Soils
It is not clear to me what you think the problem is. Your picture apparently shows the subbasins in
Mar 2
Eva Meussen
2
Feb 27
Inlet Discharges input file error
Hi to all facing a similar problem, I managed to solve the issue by copying and pasting the data from
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Inlet Discharges input file error
Hi to all facing a similar problem, I managed to solve the issue by copying and pasting the data from
Feb 27
PM
, …
Eva Meussen
3
Feb 20
Regarding inlet discharge values in QSWAT
Hi Nico, Thank you for the clear overview; it was very helpful. I know this was posted a long time
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Regarding inlet discharge values in QSWAT
Hi Nico, Thank you for the clear overview; it was very helpful. I know this was posted a long time
Feb 20
Shahzaib Shamim
,
Chris George
2
Feb 13
Failed to connect to reference data base
Did you follow the instructions in the error message? Chris On 2/11/2026 3:40 PM, Shahzaib Shamim
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Failed to connect to reference data base
Did you follow the instructions in the error message? Chris On 2/11/2026 3:40 PM, Shahzaib Shamim
Feb 13
Sarangan K
Feb 9
Clarification on Limitations in Using Observed Discharge for Calibration and Validation in Arjunanadhi Basin Study
Hi there, I am currently conducting a hydrological modelling study for my postgraduate thesis
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Clarification on Limitations in Using Observed Discharge for Calibration and Validation in Arjunanadhi Basin Study
Hi there, I am currently conducting a hydrological modelling study for my postgraduate thesis
Feb 9
Joel Foreman
,
Chris George
2
Jan 26
Problem creating static maps
This seems to be a bug in the layout manager of QGIS: it fills almost instantly. Use the QGIS Project
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Problem creating static maps
This seems to be a bug in the layout manager of QGIS: it fills almost instantly. Use the QGIS Project
Jan 26
Venkatesh Gaddikeri
,
Chris George
2
Jan 23
Issue with QSWAT: "User Soil" Table Error during File Upload
You need to provide the exact text of the error you received. Chris On 1/22/2026 7:20 AM, Venkatesh
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Issue with QSWAT: "User Soil" Table Error during File Upload
You need to provide the exact text of the error you received. Chris On 1/22/2026 7:20 AM, Venkatesh
Jan 23
Misbah Mehak
,
Chris George
2
12/18/25
Removing outlying Streams and Channels
TauDEM calculates your watershed as larger than you think it is. The only way to force your idea of
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Removing outlying Streams and Channels
TauDEM calculates your watershed as larger than you think it is. The only way to force your idea of
12/18/25
Ashehad Ali
12/2/25
compiling SWAT codes
Hi all, I was wondering if there are documentation about how to compile SWAT src codes using the
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compiling SWAT codes
Hi all, I was wondering if there are documentation about how to compile SWAT src codes using the
12/2/25
Cira Buonocore
,
Chris George
2
11/26/25
problems converting from ArcSWAT
I suspect there has been a change in Windows 11 which has introduced an extra backslash into the path
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problems converting from ArcSWAT
I suspect there has been a change in Windows 11 which has introduced an extra backslash into the path
11/26/25
Σπυριδούλα Τσουρναβέλη
11/18/25
Help with RAINHHMX calculation – daily rainfall data only
Hello everyone, My name is Spyridoula Tsournaveli , I am a university student working on my diploma
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Help with RAINHHMX calculation – daily rainfall data only
Hello everyone, My name is Spyridoula Tsournaveli , I am a university student working on my diploma
11/18/25
Mayu Mizutani
11/17/25
Trouble with SSURGO soils
Hello all, I have an issue with QSWATplus not recognizing the SSURGO soils because it does not have
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Trouble with SSURGO soils
Hello all, I have an issue with QSWATplus not recognizing the SSURGO soils because it does not have
11/17/25
Eric Moore
, …
Benjamin Donkor
5
11/17/25
Error when writing soils tables using SSURGO database
Hello, I recommend using the 2019 version of the "SWAT_US_SSURGO_Soils.mdb", as other
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Error when writing soils tables using SSURGO database
Hello, I recommend using the 2019 version of the "SWAT_US_SSURGO_Soils.mdb", as other
11/17/25
Mahesh Maskey
,
Chris George
3
11/11/25
Unable to Locate QSWAT+ Download Link and Installation Instructions
Thank you, Chris.... On Saturday, November 8, 2025 at 8:06:44 AM UTC-6 chris.g...@gmail.com
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Unable to Locate QSWAT+ Download Link and Installation Instructions
Thank you, Chris.... On Saturday, November 8, 2025 at 8:06:44 AM UTC-6 chris.g...@gmail.com
11/11/25
Mayu Mizutani
,
Chris George
2
11/3/25
HRU creating error
Di you get any error messages earlier? If not, send me a zip of your project file and I will
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HRU creating error
Di you get any error messages earlier? If not, send me a zip of your project file and I will
11/3/25
Chandra Upadhya
10/30/25
The given key was not present in the dictionary.
The result of examine model output of qswat3 1.6.5 is as given below: " ********** Starting
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The given key was not present in the dictionary.
The result of examine model output of qswat3 1.6.5 is as given below: " ********** Starting
10/30/25
Sarthak Sahoo
10/28/25
Problem with weather data definition
Hello everyone. I have attached a screenshot of an error in QSWAT 1.8. If anyone knows what this
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Problem with weather data definition
Hello everyone. I have attached a screenshot of an error in QSWAT 1.8. If anyone knows what this
10/28/25
Rabi Elabor
, …
Chris George
3
10/20/25
QSWAT model
QSWAT works with QGIS, not Mapwindow On 10/19/2025 12:23 PM, Yunusa Usman wrote: > Good day all,
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QSWAT model
QSWAT works with QGIS, not Mapwindow On 10/19/2025 12:23 PM, Yunusa Usman wrote: > Good day all,
10/20/25
Zhuohang Wu
10/20/25
Questions About ArcSWAT Pro Setup (Similar Interface to QSWAT)
I'm using ArcSWAT Pro, which is quite similar to QSWAT, but I'm running into some issues and
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Questions About ArcSWAT Pro Setup (Similar Interface to QSWAT)
I'm using ArcSWAT Pro, which is quite similar to QSWAT, but I'm running into some issues and
10/20/25