Adding Point Sources Discharge in Watershed

[tooryalay ayoubi]

Dear Dr. Karim,

I have two questions:

1- During the iterations, I had a problem with underestimation of high flow seasons and over estimation of low flows seasons (See attached station 17A), Therefore to increase Peaks, i have increased CN2 and Decreased ESCO and Sol_AWC . Aslo increased GWQMN, GW_REVAP and decreased REVAPMN to decrease baseflow. But still the high flow are under estimation (station 17B), So how can i increase the high flows with out changin CN2?  as i already changed that paramter.

2- Because my watershed has also discharge flow from springs and karizes, therfore I want to add some discharge as point source in my watershed. I have seen your video about point souce adding (https://www.youtube.com/watch?v=PbJxoCRGJCA) but, I couldn't find the (.dat file) in SWAT examples. Could you please share your . dat file?

•    I am doing calibration in 6 outlets, and i want to add these point sources in 4 outlets. So, should i make separat point source files (.dat) for each outlet or one file is enough? Please give me some instructions.

      

[2w2e]

I attached the file. Daily simulation is not so easy in SWAT because of high dynamic changes. Your simulations have a lag also for 17.

The problem with daily simulation is that you need a good distribution of rainfall stations in your watershed. Make sure you have elevation band and spatial snow parameters, if there are mountains.

[tooryalay ayoubi]

Dear Sir;

Thank you very much for sharing the file. 

My watershed is located in high mountain areas and snow melt is also the source of runoff beside the rainfall. therefor the elevation bands and snow parameters has already accounted. I will check the snow parameters again. As you mentioned my graph always has lag time in discharge, What could be the reason for that?

Thanks in advance

[2w2e GmbH]

If you have my paper on Europe, check the parameters you need to adjust to correct for that.

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[tooryalay ayoubi]

Yes i have it and already changed the slope parameters. Anyway, Thank you very much for your kind help and suggestions. 

Regards 

Ayoubi

On Thursday, June 18, 2020 at 10:40:35 PM UTC+2, wetechdata wrote:

If you have my paper on Europe, check the parameters you need to adjust to correct for that.

On Jun 18, 2020, at 20:53, tooryalay ayoubi <tooryal...@gmail.com> wrote:

Dear Sir;

Thank you very much for sharing the file. 

My watershed is located in high mountain areas and snow melt is also the source of runoff beside the rainfall. therefor the elevation bands and snow parameters has already accounted. I will check the snow parameters again. As you mentioned my graph always has lag time in discharge, What could be the reason for that?

Thanks in advance

On Thursday, June 18, 2020 at 4:31:01 PM UTC+2, 2w2e wrote:

I attached the file. Daily simulation is not so easy in SWAT because of high dynamic changes. Your simulations have a lag also for 17.

The problem with daily simulation is that you need a good distribution of rainfall stations in your watershed. Make sure you have elevation band and spatial snow parameters, if there are mountains.

On Wednesday, June 17, 2020 at 1:02:40 PM UTC+2, tooryalay ayoubi wrote:

Dear Dr. Karim,

I have two questions:

1- During the iterations, I had a problem with underestimation of high flow seasons and over estimation of low flows seasons (See attached station 17A), Therefore to increase Peaks, i have increased CN2 and Decreased ESCO and Sol_AWC . Aslo increased GWQMN, GW_REVAP and decreased REVAPMN to decrease baseflow. But still the high flow are under estimation (station 17B), So how can i increase the high flows with out changin CN2?  as i already changed that paramter.

2- Because my watershed has also discharge flow from springs and karizes, therfore I want to add some discharge as point source in my watershed. I have seen your video about point souce adding (https://www.youtube.com/watch?v=PbJxoCRGJCA) but, I couldn't find the (.dat file) in SWAT examples. Could you please share your . dat file?

•    I am doing calibration in 6 outlets, and i want to add these point sources in 4 outlets. So, should i make separat point source files (.dat) for each outlet or one file is enough? Please give me some instructions.

      

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