Failed to route channels and subbasins in table gis_routing in project datab

[Diana Lucina Hincapié Marín]

Dear all

When I was Creating HRUs I got this message:

"Failed to route channels and subbasins in table gis_routing in project database"

I clicked ok, and then, this kind of message arose: 

"Internal error: routing sink category PT id 51 not found as a source"

and it was the same not just for that number, but for a lot of PT id

Anyway, I continued and tried to solve it by unpicking options of the inlet, reservoir, pond, and point source, but that option didn't work out, even though the interface was able to create HRUs, however, this Python message appeared: 

"An error has occurred while executing Python code:

AssertionError: Watershed seems to have no area

Traceback (most recent call last):
  File "C:/Users/Usuario/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus3_64\hrus.py", line 5106, in readFiles
    self.CreateHRUs.printBasins(False, None)
  File "C:/Users/Usuario/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus3_64\hrus.py", line 2758, in printBasins
    assert basinHa > 0, 'Watershed seems to have no area'
AssertionError: Watershed seems to have no area

Python version: 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:59:51) [MSC v.1914 64 bit (AMD64)]
QGIS version: 3.16.5-Hannover Hannover, 58ba7c1ed6

Python Path:

• C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python
• C:/Users/Usuario/AppData/Roaming/QGIS/QGIS3\profiles\default/python
• C:/Users/Usuario/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins
• C:/PROGRA~1/QGIS3~1.16/apps/qgis-ltr/./python/plugins
• C:\PROGRA~1\QGIS3~1.16\apps\Python37
• C:\PROGRA~1\QGIS3~1.16\apps\Python37\Scripts
• C:\Program Files\QGIS 3.16\bin\python37.zip
• C:\PROGRA~1\QGIS3~1.16\apps\Python37\DLLs
• C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib
• C:\Program Files\QGIS 3.16\bin
• C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib\site-packages
• C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib\site-packages\win32
• C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib\site-packages\win32\lib
• C:\PROGRA~1\QGIS3~1.16\apps\Python37\lib\site-packages\Pythonwin
• C:/Users/Usuario/AppData/Roaming/QGIS/QGIS3\profiles\default/python
• C:/Users/Usuario/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus3_64
• C:/QSWATPlus_Projects/QSWAT_CALI/Demo7/Cali7"

Clearly, I obtain HRUs, as it is shown in the image below

But when I import files into SWAT+ Editor, I don't have any HRU. 

Does anyone know how to solve this problem?

Thank you in advance!

Diana H. 

[Valdilene Siqueira]

Hello. I am having the same problem. Did you manage to solve it ? Thanks

[Diana Lucina Hincapié Marín]

Valdilene, yes, I solved the problem! 

I changed the soil raster and works very well! 

The old one had wholes, was incomplete, so QSWAT was lose, probably you have the same issue, could be with land use/land cover raster or soil raster! 

All the best 

Diana 

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[Yinan Ning]

Hi, I also met this error. Did you handle this problem by the authors' method? There is no whole in my raster data. I don't know how to solve this problem. Thank you in advance!

[Lucas Rollin Hilsendeger]

Hello! Me too... The error persists even aftter I made sure my raster and my soil layers are impecable. In my 'Point source' attribute table I can see that indeed all the points (PT id) mentioned in the error are unexistent. Somehow those points were skipped and not generated. Please  let us know if anyone have any tips!