On 2013-10-19 22:37, Philip Barnes wrote : > On Sat, 2013-10-19 at 22:13 +0200, Christoph Hormann wrote: >> On Saturday 19 October 2013, Jonathan wrote: >>> It seems a river is something that has a source and a mouth (either >>> where it joins the sea, lake or a larger river). So I would say that >>> only streams that have been named "River ...." or "The River ..." >>> should ever be tagged as a river, everything else is a stream. >> Be careful here - different languages use different distinctions and >> even in English use of the terms might differ by country or region. >> And of course duplicating information that is already in the name tag >> is not necessary. > Just in the UK I can think of Brook, Clough and Beck. And thats just the > Midlands and some of the North of England. > And in French a rivière that flows to the sea is called a fleuve. I don't think I would call that a stream.
The main factor of importance is the flow (m^3 /s), or rather the mean flow. Divided by the section, m^2 , roughly depth × width, that yields the speed (m/s).. And if you divide the flow by the speed and depth, you get the width and you know if you can jump ;-) But, indeed, I prefer spending time on precise traffic tagging so that a GPS does not send a car onto a path or into a river ! Cheers, André.
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