sent from a phone
> On 21. Jun 2020, at 02:26, Joseph Eisenberg <joseph.eisenb...@gmail.com> > wrote: > > > In case of a well, as the aquifer is below your starting point, I’d think > > you would need some kind of pump and not just gravity (at the beginning)? > > Look at the diagram: > https://en.wikipedia.org/wiki/Qanat#/media/File:Qanat-3.svg or > https://en.wikipedia.org/wiki/Qanat#/media/File:Qanat_cross_section.svg > > The first part of qanat, on the uphill side, is alway slightly higher than > the point where it exits the hill. The water flows downhill by gravity. right, then where is the well? Isn’t this always about getting the water from the aquifer? And if it is a well as stated as a possibility in the wiki, how can it work with just gravity? A well means a hole dug into the ground to get access to water below the point where you are, not? Cheers Martin
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
