Performance Drop After Updating SWAT+ Revision

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Mario Fomaca Jr

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Feb 5, 2026, 10:50:00 AM (2 days ago) Feb 5

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Hello everyone,

Last year I calibrated my model using SWAT+ Editor 3.0.8 / SWAT+ rev. 61.0.1 in SWAT+ CUP and achieved good performance.

I noticed that in SWAT+ Toolbox v3.2 I can select the two most recent revisions (12 Dec 2026 and Rev. 61.0.2). However, after switching to these newer revisions, the performance at my main outlet dropped drastically. Does anyone know if this behavior is expected with the latest updates?

I am currently using SWAT+ Editor 3.0.8 / SWAT+ rev. 61.0.1 and was considering updating to SWAT+ Editor v3.1.4, but I hesitated after seeing these results.

Screenshots attached.

Rev_61.0.1: Rev_61.0.1_SwatToolboxv3.2.0.png

Rev_61.0.2: Rev_61.0.2_SwatToolboxv3.2.0.png

Rev_Latest_12Dec2025:

Rev_Latest_12Dec2025_SwatToolboxv3.2.0.png

Mario Fomaca Jr

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Feb 5, 2026, 10:50:05 AM (2 days ago) Feb 5

to SWAT+

Hello everyone,

Last year I calibrated my model using SWAT+ Revision 61.0.1 in SWAT+ CUP and achieved good performance.

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