[Tagging] Drain vs ditch

Peter Elderson pelderson at gmail.com
Fri Feb 22 23:42:33 UTC 2019


This will not suit the situation in Nederland, as explained earlier in this thread. We would have tons of exceptions on all the ‘ usually’s’ and ‘ typically’s’.

Fr gr Peter Elderson

> Op 23 feb. 2019 om 00:09 heeft Graeme Fitzpatrick <graemefitz1 at gmail.com> het volgende geschreven:
> 
> 
>> On Fri, 22 Feb 2019 at 20:48, Eugene Podshivalov <yaugenka at gmail.com> wrote:
> 
>> The primary concern of mine about the current definitios of drain and ditch is that some people are differentiating them by size.
>> 
>> or stay close to dictionary definitions which assumes some overlapping between the meanings. Here is an example:
>> drain - a narrow artificial open-air channel that takes away waste liquids or rainwater
>> ditch - a narrow channel dug at the side of a road or field to hold, bring or carry away water
> 
> I'd agree that you can't differentiate between drain & ditch based on size (except they're both smaller / narrower than a canal), but you also can't pick them based on locations - either of them can run alongside a road, or go across a field
> 
> I'd suggest we just stick with the simple definitions based on lined / unlined that I thought we all sort of agreed on, way back up there ^ :-)
> 
> =canal: Use waterway=canal for large man-made open flow (free flow vs pipe flow) waterways used to carry useful water, usually for transportation, but also for hydro-power generation or irrigation purposes
> 
> =drain: Use waterway=drain for artificial waterways, typically lined with concrete or similar, usually used to carry water for drainage or irrigation purposes.
> 
> =ditch: Use waterway=ditch for artificial waterways, typically unlined, usually used to remove storm-water or similar from nearby land. They may contain little water or even be dry most of the year – to mark this intermittent=yes may be used.
> 
> Thanks
> 
> Graeme
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