Error while creating HRUs with existing watershed

[Nicolas Grieco]

Dear all,

I am currently working on a SWAT+ project in which I need to use an existing watershed for the setup.

In step 1, I needed to manually add a column "PolygonID" in the attribute table of the file subbasins.shp,  and also a column "BasinNo" in the attribute table of the file rivers.shp . I put the same value as the "subbasins" column for each row. Then, I was able to complete step 1 without any errors, with the 153 subbasins I was expecting from the shapefile I used.

But, when I try to create the HRUs, I get the following python error at the end of the "read" process : 

Traceback (most recent call last):
  File "C:\Users/NGO/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus3_9\QSWATPlus\hrus.py", line 5461, in readFiles
    self.CreateHRUs.printBasins(False, None)
  File "C:\Users/NGO/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus3_9\QSWATPlus\hrus.py", line 3004, in printBasins
    self.printBasinsDetails(basinHa, False, fw, None, fullHRUsLayer, horizLine)
  File "C:\Users/NGO/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\QSWATPlus3_9\QSWATPlus\hrus.py", line 3056, in printBasinsDetails
    basinData = self.basins[basin]

KeyError: 4 

At the same time, I can see on my QGIS project that there are some subbasins that don't have any HRUs, as you can see on the screenshot attached.

So far, I've already tried to change the hru.py file as mentionned in another post from the dicussion group ( "Failed to generate aquifers shapefile" (google.com) ), but it dind't work out for me.

I would be grateful if you could help me. Thank you in advance.

Nicolas GRIECO.

[George, Christopher]

You need to check carefully that the BasinNo values in the channels shapefile correspond geographically to the corresponding (by PolygonId) subbasins in the subbasins shapefile.  Check the holes in your map particularly carefully.  Check the WSNO values in the channels shapefile  correspond geographically to the corresponding (by PolygonId) shapes in the watershed shapefile.  Again look carefully where you have holes.

If you cannot see the problems send me your project folder and I will investigate.

Chris

---

From: qswa...@googlegroups.com <qswa...@googlegroups.com> on behalf of Nicolas Grieco <nicolasg...@gmail.com>
Sent: 17 July 2023 15:46
To: QSWAT+ <qswa...@googlegroups.com>
Subject: [QSWAT+ User Group] Error while creating HRUs with existing watershed

 

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[Farid Gholamin]

Dear Chris,

I have the same problem. What do you mean by "check the holes on the map"?

regards,

Farid

[Chris George]

I don't remember what the problem was in the map he sent. What exactly
is your problem?

Chris

On 6/25/2024 3:06 PM, Farid Gholamin wrote:
> Dear Chris, I have the same problem. What do you mean by "check the
> holes on the map"? regards, Farid On Wednesday, July 19, 2023 at 3: 53:
>  03 PM UTC+2 George, Christopher wrote: You need to check carefully that
> the BasinNo values in the channels

> ZjQcmQRYFpfptBannerStart
> This Message Is From an External Sender
> This message came from outside your organization.
> ZjQcmQRYFpfptBannerEnd

> Dear Chris,
>
> I have the same problem. What do you mean by "check the holes on the map"?
>
> regards,
> Farid
>
> On Wednesday, July 19, 2023 at 3:53:03 PM UTC+2 George, Christopher wrote:
>
> You need to check carefully that the BasinNo values in the channels
> shapefile correspond geographically to the corresponding (by
> PolygonId) subbasins in the subbasins shapefile.  Check the holes in
> your map particularly carefully.  Check the WSNO values in the
> channels shapefile  correspond geographically to the corresponding
> (by PolygonId) shapes in the watershed shapefile.  Again look
> carefully where you have holes.
>
> If you cannot see the problems send me your project folder and I
> will investigate.
>
> Chris
>

> ------------------------------------------------------------------------
> *From:* qswa...@googlegroups.com <qswa...@googlegroups.com> on

> behalf of Nicolas Grieco <nicolasg...@gmail.com>

> *Sent:* 17 July 2023 15:46
> *To:* QSWAT+ <qswa...@googlegroups.com>
> *Subject:* [QSWAT+ User Group] Error while creating HRUs with

> <https://urldefense.com/v3/__https://groups.google.com/g/qswatplus/c/Z5AGrC_Wfq0/m/7YefEAajBQAJ__;!!KwNVnqRv!HYPD_D2nzkelIUnDT3wRdsiCwHzBbheJE9m4PgfLc2EMmcJRO5oXfMnw7jviKMLnSgcq-LjAkvByujMo$> ), but it dind't work out for me.

>
> I would be grateful if you could help me. Thank you in advance.
>
> Nicolas GRIECO.
>
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