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The course of a stream has been artificially changed. So, the old stream bed is always dry now. I wouldn't map it with But how can I map that dry stream bed? It's a significant local feature, and I'd rather not omit it. |
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Hi a question like this has been solved here at https://help.openstreetmap.org/questions/4437/how-do-you-tag-a-dry-creek. But you could consider using waterway=wadi for a stream that’s carrying water every now and then. Look at the waterways tags and you’ll see an extra tag concerning the width together with your intermittent=yes ! of the dry bed, very good. Or just waterway=old river branch with intermittent as well. 2
Yes, I did read that post, still I was unconvinced with intermittent=yes, since that feature is no longer a waterway. It's just a dry ditch, with some bushes growing in it. But there are still banks, bridges, etc. As far as I understand, waterway=wadi seems more appropriate for Middle East and North Africa. I would use waterway=old_stream and dry=yes. What do you think?
(10 Feb '14, 16:38)
solitone
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Wadi's are in Europe used to collect rainwater and loose it by filtration no need for a sewer system, I just added 4. I used the tag waterway=old_ river_branch for cut of, water carrying branches. So you could use old_stream, dry=yes and consider adding the name of the river. If there's any change of flooding by heavy rainfall use intermittent instead.
(10 Feb '14, 21:28)
Hendrikklaas
Ok, thanks, Hendrikklaas. I'll go with:
(11 Feb '14, 09:42)
solitone
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@Hendrikklaas Re "Wadi's are in Europe used to collect rainwater and lose it by filtration no need for a sewer system" - have you got an example of that use anywhere? I've not heard of the word "wadi" used for that before - a more common English word for something that "collects rainwater and loses it by filtration" would be a soakaway.
(11 Feb '14, 10:27)
SomeoneElse ♦
Wadi's are planned, studied and made since 2008, just to collect large floods temporarily read this study with a translation at page 6 http://www.rivm.nl/bibliotheek/rapporten/607050008.pdf Several communities realized wadi's for instance in the municipality of Helden and Houten, but the use is growing. I expect a soakaway to be an fixed drain at the end of a tube and not an lowered area in a meadow.
(11 Feb '14, 11:27)
Hendrikklaas
@Hendrikklaas That's a paper from the Department of the Environment in the Netherlands - you haven't got an English source have you (by which I don't mean a document in Dutch by a Dutch organisation which also includes an English translation)?
(11 Feb '14, 12:14)
SomeoneElse ♦
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There seems to be a better solution now for such dry stream beds. Not to use such tags like waterway=drystream https://wiki.openstreetmap.org/wiki/Tag:waterway%3Ddrystream but recommending natural:gully https://wiki.openstreetmap.org/wiki/Tag:natural%3Dgully :) A gully is result of sharp erosion though. I ment a flat stream bed.
(06 May '21, 14:20)
solitone
I see, thank you for the explanation. :)
(08 May '21, 07:06)
Wanderweber
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