Long time taken to run the SWAT+ toolbox

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Dessalegn Worku

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Dec 15, 2025, 9:35:03 AM (2 days ago) Dec 15

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Dear experts

I am a beginner with SWAT+ and the SWAT+ Toolbox. I ran the SWAT+ model and began the sensitivity analysis yesterday; however, the process is taking longer than expected, even though the catchment is relatively small (about 1,600 km²). My computer has 16 GB of RAM and a Core i7 processor, which I assumed would be sufficient to complete the analysis in a reasonable amount of time. Could anyone explain what might be causing the slow performance?

I am also preparing to work on a much larger watershed of approximately 65,000 km². For those with experience, what level of computing power is typically required to efficiently perform calibration and validation for a watershed of that size?

Additionally, I suspect that part of the slow runtime may be related to the fact that I used daily streamflow input data. I am now considering shifting to monthly data, but I am unsure how to properly prepare the monthly input dataset. Any guidance or shared examples would be greatly appreciated.