Sediment output mismatch

[Himmat Basnet]

Hi Celray,

  I am doing a project relating to nutrient transport especially pesticide and I wanted to calibrate my model for flow and sediment. But when I am using the same basin codes and same parameters in swat+ editor and toolbox, I am getting similar flow values but different sediment output. Can you please help me with that? 

For your information, I was having a problem with pesticide output using SWAT+ rev 61.0.1 and I was provided with corrected executable by the SWAT+ editor personnel, and I am using that revised executable for both editor and toolbox. I have attached both outputs and also the revised executables for your reference. Your help will be greatly appreciated.  

Regards,

Himmat Basnet

Toolbox output

Editor output

Modified executables

[Celray James]

Check the instream sediment model used between SPE and SPT.

[Himmat Basnet]

Hi- 

 I am using the same for both and I have attached the outputs as well as executables I am using for your reference.

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[SWAT+ Toolbox]

I have seen that cal_parms.cal is different but I will take a closer look tomorrow using your executable files

[Himmat Basnet]

Sure thank you. Hope to get reply from you soon. 

Regards.

Himmat Basnet

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[Himmat Basnet]

Hi- 

 I was wondering if you got an opportunity to look into it? 

Regards,

Himmat Basnet

[Himmat Basnet]

Hi-

 I hope everything is going well. I just wanted to know if you had a chance to look into the sediment issue? 

Regards,

Himmat Basnet

On Tue, Jun 17, 2025 at 21:11 SWAT+ Toolbox <spto...@googlegroups.com> wrote:

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[Himmat Basnet]

Hi celray-

 I hope you are doing well. I wanted to check quickly if you were able to look into the differing sediment yield issue between editor and toolbox? 

Also I had preciously attached txtinout for both editor and toolbox and also modified executables used.

Thanks,

Himmat Basnet

On Tue, Jun 17, 2025 at 15:10 Celray James <celray....@gmail.com> wrote:

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[SWAT+ Toolbox]

please zip the files so each setup can be downloaded at once... currently google drive is only allowing downloading one file at a time.

[Himmat Basnet]

Hi-

 I have moved all the folders under the single folder and have attached the link. I hope to get a response regarding the issue of sediment difference soon. Thank you for your time.

all folders

Sincerely,

Himmat

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[SWAT+ Toolbox]

Thanks!

[Celray James]

I have found the reason. this one was a little hard to dig bit it is the 'cal_parms.cal' file. it has different ranges and that is why the calibrated parameters are applied slightly differently and hence, different outputs.

[Himmat Basnet]

Hi celray-

 Thanks for your insights. So how do you suggest I approach it? 

Regards,

Himmat Basnet

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[Celray James]

https://office.chawanda.com/s/SDWfoE8D6soae6o