To me (native British-English speaker) "ditch" carries connotations of being dirty (muddy) and being used either for drainage (to get water out of somewhere, the destination not being important) or as a barrier. So it's more like a drain.
A leat is to take the water to a specific place, with the emphasis more on the destination than on where it's getting the water from, and as it's for a water supply, the water in it will generally be reasonably clean (or at least not as muddy as ditch-water). In terms of size, and of being made artificially, it is quite like a ditch, but I think it's likelier to have an artificial lining e.g. concrete. I'm inclined to think it doesn't really fit any of the existing waterway tag values, and that I should make a proposal for it. On Fri, Apr 21, 2017 at 12:42 PM, Martin Koppenhoefer < [email protected]> wrote: > > > sent from a phone > > > On 21. Apr 2017, at 13:26, Chris Hill <[email protected]> wrote: > > > > A leat is a very specific thing. It is certainly not a canal, but > neither is it a ditch nor drain. > > > I would have thought it was a kind of ditch from the description in WP but > if it isn't I agree that waterway=leat seems suitable to describe > accurately the feature > > > cheers, > Martin > _______________________________________________ > Tagging mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/tagging >
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