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Source of ground infiltration values
Hi all,
For a project I am looking into the ground infiltration values (in m/d) of different types of soils.
I was wondering where the default values in Tygron come from. I believe the source of subsurface data is the BRO, but I was not able to find the exact source of the values for ground infiltration. Does someone know this?
Thanks in advance!
Kind regards,
Wouter
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Hi @Wouter ,
From one of our devs:
These values are based on BOFEK Table and Staringreeks, see column KV-Soil.
We have updated the values once so far, but not the calculations.
Each value can be adjusted if the user wants to use other values.
See also:
https://www.wur.nl/nl/show/BOFEK2020WENR-rapport3056.htm
I hope this helps,
Regards,
Vincent
Hi @vincent.rd,
Thank you for your reply.
I indeed noticed that the values were based on the BOFEK and Staringreeks, but I still have trouble with understanding some of the infiltration values that were given.
For instance, a "haarpodzolgrond, grof zand" has a different value than a "laarpodzolgrond, grof zand" in Tygron, while both are categorised with the same BOFEK-code and in my understanding should thus have the same Staringreeks infiltration value.
Would you be able to indicate where these discrepancies originate from?
Thanks in advance,
Regards,
Wouter
Hi @Wouter ,
I attached an excel that we use internally. I forgot to attach it in the previous post. I understand it was created by a former colleague, who is a water specialist.
I hope this answers your question.
Regards,
Vincent
Hi @vincent.rd,
Thank you, I believe this should be very helpful!
Regards,
Wouter
Hi @vincent.rd,
Unfortunately, I still do not understand the default values for infiltration in Tygron. I checked the Excel-file you sent me and discovered that the values in that file are different from the ones in Tygron (LTS version).
For example, take the "Veldpodzolgrond, grof zand", which has a ground infiltration value of 0.205 m/d in Tygron:
In the Excel-file however, this soil type has an infiltration value of 1.84 m/d:
I noticed that a difference occurs for all soil types in my study area.
Do you or does someone else know why this difference exists?
Thanks in advance,
Wouter
Hi @Wouter ,
It seems the file I sent you was outdated. please find here the most recent one.
Hope this helps,
Vincent