simulated data varied largely

[Bimsara Chathuranga]

when i calibrated using swat cup and i cheked my objective function, there were impossible values, then i cjecked what is the reason and i found this one. my simulated data varied largely for only one month, the i checked my  rainfall data there is no problem. what is the reasin and how i solve this problem

here i attached my objective functions values and sim data

[Ssentongo johnpaul]

Hello Sir, where you able to solve this because it seems l am also getting negative NSE and for sure I don't know way.

Thanks

On Thu, Oct 9, 2025, 13:07 Bimsara Chathuranga <bimsaracha...@gmail.com> wrote:

when i calibrated using swat cup and i cheked my objective function, there were impossible values, then i cjecked what is the reason and i found this one. my simulated data varied largely for only one month, the i checked my  rainfall data there is no problem. what is the reasin and how i solve this problem

here i attached my objective functions values and sim data

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[omc...@gmail.com]

Hi, 

The only reason that I can think about, it is that either your weather data used as input is wrong, or your weather generator data (.wgn) was not changed according to your records, and it is using default values, which usually generate crazy numbers when you do not have days with weather records

Regards,

Oscar