[Tagging] Rio de la Plata edit war

Joseph Eisenberg joseph.eisenberg at gmail.com
Mon Aug 3 20:41:49 UTC 2020


Consider the Saint Lawrence river. Often the Rio de la Plata is claimed to
be the widest river estuary in the world, but some maps of the Saint
Lawrence estuary show it extending all the way to the eastern tip of Île
d'Anticosti (Anticosti Island), which would make the mouth of the river
estuary over 300 kilometers wide.

https://www.openstreetmap.org/relation/6122656 - the river centerline,
which extends to the island

The current mapping of the lower estuary, extending to the west end of the
island: https://www.openstreetmap.org/relation/4555382#map=8/49.216/-63.885

Wikipedia map of the Saint Lawrence river watershed, showing the estuary
extending to the east side of the island:
https://en.wikipedia.org/wiki/Saint_Lawrence_River#/media/File:Grlakes_lawrence_map.png

Based on how the Rio de la Plata is currently mapped, it seems that the
Saint Lawrence coastline would have to be moved all the way down to the
very end of the estuary.

However, estuaries are not merely rivers, they are also part of the marine
environment. Just like the Rio de la Plata, the Saint Lawrence estuary is
part of the marine environment, as well as influenced by the river.

I have previously proposed that estuaries should be mapped by extending the
coastline upstream to the limit of the estuary, and also mapping the area
of the estuary as water with water=estuary

This will allow database users to create a reasonable set of water polygons
which include the oceans and all marginal marine water bodies, including
bays, straits and estuaries, while also allowing local mappers to map their
river estuaries as they see fit.

– Joseph Eisenberg

On Mon, Aug 3, 2020 at 12:48 PM <muralito at montevideo.com.uy> wrote:

>
>
> ----- Mensaje original -----
> > De: "Christoph Hormann" <osm at imagico.de>
> > Para: "Tag discussion, strategy and related tools" <
> tagging at openstreetmap.org>
> > Enviados: Lunes, 3 de Agosto 2020 16:27:12
> > Asunto: Re: [Tagging] Rio de la Plata edit war
>
> > On Monday 03 August 2020, muralito at montevideo.com.uy wrote:
> >>
> >> The scientific view, and what can be experienced or observed here is
> >> that the coastline ends in Punta del Este. And the line to Punta Rasa
> >> is a good average of the limit. Where should be put the coasline if
> >> not here?
> >
> > Hello muralito,
> >
> > could you formulate a generic rule for coastline placement similar to
> > what i formulated in
> >
> >
> https://wiki.openstreetmap.org/wiki/Proposed_Features/Coastline-River_transit_placement
> >
> > that
> >
> > (a) allows for the coastline placement you favor in case of the Rio de
> > la Plata
> > (b) is based on verifiable physical geography criteria that can
> > practically be checked by mappers and
> > (c) that is compatible to most of the current coastline placements at
> > river mouths around the world?
> >
> > If you can more easily and more precisely formulate such rule in Spanish
> > that would be fine - i am sure we could manage to translate.
> >
> > --
> > Christoph Hormann
> > http://www.imagico.de/
> >
> > _______________________________________________
> > Tagging mailing list
> > Tagging at openstreetmap.org
> > https://lists.openstreetmap.org/listinfo/tagging
>
>
> i will try.
>
>
> in my last mail i'm questioning the coastline placement in several rivers.
> so,
> -what are we mapping the coastline for?
> -what we want from the "coastline"?
> -what questions are we going to answer, or could we answer, with that
> modeling of the coastline/world? (or we just draw it for the renderer)
>
> i have read everywhere that OSM is not the map, is the data, and we have
> created and are creating these data for some purpose.
>
> Regards,
> M.
>
>
>
>
>
> ---------------------------------------------------------------------------------------------------------------------------------------
>
> Con el nuevo beneficio fiscal, tu facturación electrónica puede ser sin
> costo.
>
> Informate si aplicás aquí.
>
> mvdfactura.uy
>
>
> ---------------------------------------------------------------------------------------------------------------------------------------
>
>
>
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>
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