Arturs Veinbergs

Ok, thanks a lot!

There is figure in link: https://failiem.lv/u/n4zenndh#/view/groundwater+runoff+and+after.png In figure I tried to explain as I understood the calculations of groundwater runoff and volume of ep: 1st step – before groundwater runoff 2nd step - after groundwater runoff. Is it correctly and is it the cause of bug you were talking about? 3rd step –In which moment HYPE it turns to 3rd step? Does it happens because of percolation or it happens by something else?

then bug would be in the calculations of groundwater runoff?

How can I know which subroutine is calculated at first? In soil_proc of Code 4.10.7 “SUBROUTINE calculate_soil_runoff” is located next after the “SUBROUTINE calculate_tile_drainage”. So my be in this Code the runoff through the drainage pipe is calculated at first?

adding to the 1. question - it could happen if the wcep is smaller in upper soil layers

Sorry for so much questions! What will be result of runoffd = trc * deltah / sthick(3) * ep(3) if trc=1; deltah / sthick(3)=1; ep(3)=100mm; ep in upper layers is smaller than water volume below drainage pipes. Then in the next day the groundwater table will be below drainage pipes? Is there some rule to avoid this? In the same time the groundwater runoff is calculated by the separate equation – how it is avoided to have total runoff higher than actual water content in ep.

Of course, for now it seems clear, thank you very much!

Thank you for the explanation! Could it be correctly explained by the figure available in the link: http://failiem.lv/u/8x9mmhqq) I just didn’t catch the sentence of yours: “if the groundwater level is more than the thickness of soil layer three above the drainage pipe level then the tile runoff will be higher than trc * ep.” – Is it the concept in the HYPE? or as you wrote: "runoff is limited to the available water in the ep-pores of soillayer 3,"