Error Inputting Manual Usersoil

[Matthew Lombardo]

Hi all,

Has anyone seen this error message and would know how to fix my usersoil csv? I've made two different usersoils, one modeled after the SSURGO table in the swat_soils.sqlite, and one modeled after the Robit Usersoil csv. Both return similar error messages, which are the two screenshots I attached. I also included the two usersoil's and the names of the screenshot correlate with one of the usersoils. The csv's should be operating normally since I made sure to match the soil ID in my soil lookup table with fields in both csv's, and both tables are modeled directly after already working usersoil tables. 

I originally thought that the error message from my SSURGO modeled table meant that SWAT+ only needs 11 parameters, but I checked and 12 parameters are required. This made me think that my data layout was wrong, so I tried to emulate the Robit data setup. After using my new usersoil csv, I hit a dead end. Has anyone seen this error message and knows how to fix my usersoil csv?

Thank you for your attention and help! 

https://swat.tamu.edu/media/69365/ch22_input_sol.pdf

https://github.com/swat-model/QSWAT/blob/master/QSWAT3/ExampleDataset/Robit_usersoil.csv

[Chris George]

Usersoil tables are different from SSURGO ones and you should only
follow SSURGO examples if using SSURGO soil maps.

There are two possibilities for usersoil csv files. One is to follow
the pattern of Robit_usersoil.csv, when your usersoil.csv file should
have 152 columns. Yours apparently has 166.

The other is to use the pattern of Robit_usersoil_layers.csv and
Robit_usersoil_main.csv, where you supply the latter (_main.csv) as the
csv file, and QSWAT+ will read that and then find _layers file if the
file names relate in the way the Robit ones do. the _main file has 11
columns and the _layers file has 17 columns.

QSWAT+ chooses between the alternatives by the number of columns in the
.csv file given by the user.

Chris

On 9/29/2025 6:12 PM, Matthew Lombardo wrote:
> Hi all, Has anyone seen this error message and would know how to fix my
> usersoil csv? I've made two different usersoils, one modeled after the

> SSURGO table in the swat_soils. sqlite, and one modeled after the Robit

> Usersoil csv. Both return similar

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