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 <mural...@montevideo.com.uy> wrote: > > > ----- Mensaje original ----- > > De: "Christoph Hormann" <o...@imagico.de> > > Para: "Tag discussion, strategy and related tools" < > tagging@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, mural...@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@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 > > > --------------------------------------------------------------------------------------------------------------------------------------- > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
