Hello Dear Users!
I have a problem with low value of surface runoff. In my output.std is:
PRECIP = 620.9 MM
SNOW FALL = 52.53 MM
SNOW MELT = 52.25 MM
SUBLIMATION = 0.28 MM
SURFACE RUNOFF Q = 5.90 MM
LATERAL SOIL Q = 11.97 MM
TILE Q = 0.00 MM
GROUNDWATER (SHAL AQ) Q = 138.97 MM
GROUNDWATER (DEEP AQ) Q = 52.86 MM
REVAP (SHAL AQ => SOIL/PLANTS) = 55.96 MM
DEEP AQ RECHARGE = 53.14 MM
TOTAL AQ RECHARGE = 192.12 MM
TOTAL WATER YLD = 210.15 MM
PERCOLATION OUT OF SOIL = 193.78 MM
ET = 415.9 MM
PET = 621.6MM
My calibration NS is 0.73. How parameters can increase the value for surface runoff?
Best regards
Damian
hi dear
please have a look to following links:
Article Sensitivity Analysis of Surface Runoff Parameters Towards Pe...
https://link.springer.com/article/10.1007/s13201-019-1129-z
https://www.usgs.gov/special-topic/water-science-school/science/surface-runoff-and-water-cycle?qt-science_center_objects=0#qt-science_center_objects
in case of experimental models please visit the ITC Institute The Netherlands website
good luck
Sorry for the chaotic question with no details.
The model is made in SWAT. NS adjustment is based on discharge at the main outlet of your catchment.
A bit about the catchment area. The catchment area covers 30,000 ha, it is situated on a lowland in Poland, strongly carved by the river. Average annual rainfall is approx. 600 mm. Research period 2013-2017. PET has been consulted and is well assessed. The AWC parameter is also matched from the literature and I did not change it in the SWAT-CUP calibration. According to the literature, the surface runoff for the studied area should be approx. 9-15 mm. I wonder if I should worry too much if the average runoff is about 5 mm, and in 2015-2017 it is even 0 mm in many sub-catchments.
Best regards
Damian
Dear Damian,
I read your question and comments of our good colleagues Christoph and Reza. So, you received instructions and clarifications.
On the other hand, I am kindly inviting you to have a look at the application of my IntErO model for the calculation of soil erosion intensity and runoff (link): www.geasci.org/IntErO.
- Free download of the software;
- Simple installation;
- Examples of applications available on the same web page (link): www.geasci.org/IntErO;
- Examples of applications available on my profile on Research Gate;
- Examples of applications available on web page (link): www.geasci.org/Publications;
- I am, as a model author, available to demonstrate how it is working (with using ZOOM, email-s, but also internal messages by Viber/WhatsApp). Could be interesting to use it and to compare with some other models results.
Sincerely,
Velibor Spalevic
www.geasci.org/Spalevic
Mob/Viber/WhatsApp: +382 67 201 222
E-mail: [email protected]
Thank you very much for help. In my free time, I will try to take advantage of your experiences.
Best regards,
Damian
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