[Tagging] Coastline for rivers, estuaries and mangroves?

Christoph Hormann osm at imagico.de
Wed Sep 5 07:29:03 UTC 2018


On Wednesday 05 September 2018, Joseph Eisenberg wrote:
> Colin and Christoph, could you give some guidance about a couple of
> the specific situations that I brought up in the original post?
>
> First, in the question on the help Q&A board, the other mapper wanted
> to remove the coastline from tidal parts of rivers in England , so
> that the end of the waterway=river would meet the coastline. It looks
> to me that this is contrary to standard mapping in England and many
> other places. But I can see why some people look at the waterway line
> out beyond the coastline and feel it needs the river area mapped.

I think you need to give specific examples for a meaningful discussion 
here.

> It seems like this would be reasonable, if the coastline is
> considered to map the furthest inland limit of the marine environment
> (at high tide), and the river area plus the line of the waterway are
> mapping the longest extention of the river.

To be clear:  The upper limit of tidal influence on water levels and the 
ecological limit of the marine environment are two very different 
things.  Tidal influence often goes much further upstream - as 
illustrated by Kevin's example.

-- 
Christoph Hormann
http://www.imagico.de/



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