пт, 11 янв. 2019 г. в 02:50, Joseph Eisenberg <joseph.eisenb...@gmail.com>:
> Ditches are also used to drain excess water. > > In the USA we have irrigation ditches in dry areas and drainage ditches in > wet areas. > > Britain seems to lack irrigation - plenty of rain there. If you use "ditch" for both land irrigation and drainage, what do you use the "drain" tag for then? Eugene пт, 11 янв. 2019 г. в 03:00, John Willis <jo...@mac.com>: > > > > > > On Jan 11, 2019, at 8:49 AM, Joseph Eisenberg < > joseph.eisenb...@gmail.com> wrote: > > > > Ditches are also used to drain excess water. > > > > In the USA we have irrigation ditches in dry areas and drainage ditches > in wet areas. > > it is especially difficult where I am, because the irrigation ditiches > cascade from on set of fields to the next, sometimes are concrete, > sometimes dirt; sometimes “natural”, sometimes man-made; they all flow like > batter in a waffle iron. > > “drains” that take away excess water and runoff eventually lead to another > set of fields, before being dumped back in the river (only to begin the > cycle again 500m later). > > the idea of ditches and drains seem to be an attempt to define “channel” > with a preset type, construction material, and usage - when it is very > vague in some countries. > > Javbw > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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