[OSM-talk-ie] Coastline on tidal rivers

[Keith]

Hi Mike,

Not too sure if it is related but there is a historic anomaly here, 
Kenmare River although obviously a bay was classified as a river by 
successive lords of Lansdowne in order to secure fishing rights to the 
entire bay.

Keith

On 24/06/2021 18:56, Mike Riney wrote:
> Hi,
>
> I've changed the coastline of the River Roughty in Kenmare to be further
> downstream than it previously was.  It is now more akin to what a
> local would describe as Kenmare Bay.  The previous coastline extended up
> the river to include all of the tidal area.  That meant that the
> riverbank was also treated as boundaries of Munster, Kerry, and many other
> regions that didn't make much sense since both sides of the river are in
> those regions.
>
> Based on this way http://osmlab.github.io/osm-deep-history/#/way/385582526,
> best I can figure out is that new new coastline was created in 2015 by user
> https://www.openstreetmap.org/user/SK53, who edits in 80 different
> countries, principally UK.   But I'm not familiar enough with the various
> editing tools to confirm the history.    So i haven't contacted whoever
> created it.
>
> I don't know the history of Irish tidal river mapping but the general OSM
> guidelines give some flexibility and other examples take the same approach
> in placing tidal areas inside the coastline.
>
> If its incorrect, please let me know and I can revert.
>
> https://wiki.openstreetmap.org/wiki/Proposed_features/Tidal_Rivers
> Eg
> Not sure the tidal extent of the River Lee, but the coastline is set just
> inland from the Jack Lynch Tunnel
> The Thames is tidal through London to Teddington, but the coastline is set
> at Coryton near Southend-on-Sea
> --
> Regards, Mike
> mike.riney at gmail.com
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