Need Help Changing Soil Database

[Matthew Lombardo]

Hi all,

Thank you for the help, and sorry for the spam! In my last post I noted that multiple of my soils from SSURGO are not in the swat_soils.sqlite. No matter how many soils I change, they are still missing in the swat_soils.sqlite. So, I am trying to use a different database for the SSURGO soils. On the SWAT+ Global Data website, I downloaded the US SSURGO soils database and added it to my databases folder, but QSWAT is still reading the swat_soil.sqlite. Can someone explain to me how to change the input for the soil database so QSWAT is reading the US SSURGO database and not the swat_soils database? I added a screenshot below of what my database folder looks like, and a ppdf of instructions from Dr. Merwade at Purdue showing how to change the soil database directory in SWAT2012. 

Thank you for your help and attention!

[Chris George]

When you select SSURGO in QSWAT+ the use of swatplus_soils.sqlite is
automatic. You can only change the behaviour by editing the database.
You would add entries to tables ssurgo and ssurgo_layer to define
additional soils.

Also, SWAT_US_SSURGO_Soils is a Microsoft Access database. QSWAT+ only
uses sqlite databases.

Chris

On 9/8/2025 6:08 PM, Matthew Lombardo wrote:
> Hi all, Thank you for the help, and sorry for the spam! In my last post
> I noted that multiple of my soils from SSURGO are not in the

> swat_soils. sqlite. No matter how many soils I change, they are still

> missing in the swat_soils. sqlite. So, I

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