Must have equal len keys and value when setting with an iterable

[teiushi]

I'm building the wflow model (static driver).

Enter the command:
hydromt build wflow “path/to/the/driver” -i wflow_build.ini -d hydromt_data.yml -vv

An error occurs like this:
ValueError: Must have equal len keys and value when setting with an iterable

I am attaching the log file:
hydromt.log

Sincerely looking for guidance, I'm just starting to learn models.

[shartgring]

Dear @teiushi thanks for reaching out! Would it be possible for you to provide the reservoirs.gkpg that you are using in model building? And an outline of the model basin (staticgeoms/basins.geojson) that you can build without the reservoirs? That might help me with trying to replicate the error myself to see what is going wrong

The workflow is looping through the identified waterbodies (i.e. reservoirs) using the column "waterbody_id" in the supplied source of reservoirs. So I am wondering if the error could be related to the values in the "waterbody_id" columns

[teiushi]

@shartgring ,thanks for your reply, of course!
But I can't upload the .gpkg and basin files on this reply page, you can find them in the main branch of my repository.

I use GRanD_v1.3 for my reservoir data and added the columns needed in the table below:

The other added columns have corresponding sections in the attribute table that comes with the source data, while waterbody_id does not.
So, for them, I simply numbered them in the research area.
Maybe that's the problem, but I haven't thought of how to modify it.

The basin data was generated using manually corrected flow direction data derived from:
http://hydro.iis.u-tokyo.ac.jp/~yamadai/MERIT_Hydro

[shartgring]

Thank you for providing the geopackage and the upstream area map! I have found the issue. The map uses upstream area rounded to integers. However because of that rounding, some neighbouring cells have identical values for uparea. For example in the image below, cells 1 and 2 have values 20245.

The workflow uses the cell with the largest upstream area as the reservoir outlet inside a mask of the reservoir shape. This means that multiple cells can have the largest upstream area. Hence that keys and values have varying length (which they are not supposed to), as now 2 cells are found instead of 1

It is possible to use the workflow without the upstream area (when uparea_name == None in https://deltares.github.io/hydromt_wflow/latest/_generated/hydromt_wflow.workflows.waterbodymaps.html#hydromt_wflow.workflows.waterbodymaps), but that is not possible to achieve through regular model building. So I think that it is the easiest solution for you if you can create the upstream area map with some extra digits ensuring that there are no cells with duplicate values

[teiushi]

Thanks for your tip, I modified some cells' values in the uparea.tif and fixed the error.