[Tagging] Waterway direction

[M∡rtin Koppenhoefer]

2010/9/1 Anthony <osm at inbox.org>:

>> http://dict.leo.org/?lp=ende&search=d%C3%BCker
>>
>> OK, got it (but the article is not mainly fitting):
>> http://en.wikipedia.org/wiki/Inverted_siphon
>
> Ah, I see.  But that wouldn't be tagged as a waterway, would it?


Why shouldn't it? Probably depends on the situation, but if the occur
on an object that we generally tag with waterway, it should be clear.
This technique was already used in ancient Rome for special parts of
aqueducts (where they had to bypass an obstacle). Aren't they a kind
of culvert? Btw.: I just found out that in the case of wastewater this
is called a depressed sewer in English.

http://www.kw-ag.at/Files/inverted.jpg
http://www.k0lee.com/blog/uploaded_images/siphon2-775129.jpg
http://www.expogreenway.org/Inverted%20Siphons.htm


Cheers,
Martin