[OSM-talk] waterways through water bodies

Joseph Eisenberg joseph.eisenberg at gmail.com
Thu Jun 24 22:13:53 UTC 2021 

Those may be a waterway=tidal_channel if they are in a lagoon or other
coastal marine water areas. See
https://wiki.openstreetmap.org/wiki/Tag:waterway%3Dtidal_channel

This is a fairly new tag so it may not yet be common in your area.

Joseph Eisenberg

On Wed, Jun 23, 2021 at 12:51 PM Volker Schmidt <voschix at gmail.com> wrote:

>
> There is another variant of this: rivers that end in a body of shallow
> water, or even traverse it shallow lagoons (very visoble examples in the
> lagoon of Venice). The rivers continue, often as navigable "canals", in the
> shallower water of the lagoon. In the Venice lagoon most have names and and
> are marked by wooden posts. The tagging us not uniform in OSM.
>
>
>
>
> On Wed, 23 Jun 2021, 12:52 , <talk-request at openstreetmap.org> wrote:
>
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>> Today's Topics:
>>
>>    1. Re: Persian/Arabian Gulf Tagging (Abdullah Abdulrhman)
>>    2. Re: waterways through water bodies (Martin Koppenhoefer)
>>    3. Re: waterways through water bodies (yvecai)
>>    4. Re: waterways through water bodies (Martin Koppenhoefer)
>>    5. App maps shady spots to guide Barcelona walkers along cooler
>>       routes | The Guardian (Andy Mabbett)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Tue, 22 Jun 2021 20:13:37 +0000
>> From: Abdullah Abdulrhman <abdullahOSM at outlook.com>
>> To: "enejati at mail.um.ac.ir" <enejati at mail.um.ac.ir>,
>>         "talk at openstreetmap.org" <talk at openstreetmap.org>
>> Subject: Re: [OSM-talk] Persian/Arabian Gulf Tagging
>> Message-ID:
>>         <
>> AM0PR07MB4435FBDC0D0CCA423971C4B8C8099 at AM0PR07MB4435.eurprd07.prod.outlook.com
>> >
>>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> See reply of "Saeed Hubaishan" on this mail:
>> https://lists.openstreetmap.org/pipermail/talk/2021-June/086640.html
>>
>> And as for what happened in the Telegram group, it was documented with
>> pictures, and the administrators of the group deleted it after raising this
>> topic in the mailing list.
>>
>> Another thing is that I didn't get a copy of your reply and saw it in the
>> talk archive and didn't find it in the spam folder, which raised my
>> suspicions that your mail provider might have blocked the message and the
>> mailing list doesn't duplicate the message (and I deactivated this feature
>> from the mailing list settings)
>>
>> ________________________________
>> Hello Abdullah,
>> Thank you for your comment.
>>
>>
>> Though I think having one `name` tag doesn't cover the super complex
>> situation "on the ground", I like to ask some question about this
>> approach.
>>
>> > First: if there are disputes over the name, the rule in OSM is
>> > "On the Ground Rule" as found on the wiki page:
>> > https://wiki.openstreetmap.org/wiki/Disputes#On_the_Ground_Rule
>>
>> Here is a quote from your provided link: "simple default rule is
>> whatever name are used by the people on the ground at that location are
>> used." so here are my questions:
>>
>> 1. Considering the population of each country on the gulf area, what
>> percentage of people living there would identify it as "Persian Gulf",
>> "Arabian Gulf" or just "The Gulf"?
>>
>> 2. What percentage do you think is enough for a name to be _mentioned_
>> in the `name` tagging?
>>
>>
>> > the incitement to this sabotage strongly encouraged OSM Iranian
>> > telegram group
>>
>> As I mentioned earlier, we never have or will encourage or approve of
>> vandalism in other countries in our community. Please provide proofs
>> alongside your accusations.
>>
>>
>> I'll be glad to hear your answers.
>>
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>> ------------------------------
>>
>> Message: 2
>> Date: Wed, 23 Jun 2021 10:19:05 +0200
>> From: Martin Koppenhoefer <dieterdreist at gmail.com>
>> To: Pierre Béland <pierzenh at yahoo.fr>
>> Cc: OpenStreetMap <talk at openstreetmap.org>
>> Subject: Re: [OSM-talk] waterways through water bodies
>> Message-ID: <F2C054AE-C807-4628-B9ED-871376A45CA6 at gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>>
>>
>> sent from a phone
>>
>> > On 22 Jun 2021, at 21:33, Pierre Béland via talk <
>> talk at openstreetmap.org> wrote:
>> >
>> > See for example this 893km long river « La Grande Rivière »
>> > OSM relation    https://www.openstreetmap.org/relation/12523071
>> > Wikipedia map
>> https://fr.wikipedia.org/wiki/La_Grande_Rivi%C3%A8re#/map/0
>>
>>
>> I don’t understand the course of this river, it keeps flowing in huge
>> lakes (typically in a big lake there isn’t river flow) where it also takes
>> strange turns, and why is the lake at its beginning then not a part of it?
>>
>> Cheers Martin
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>> ------------------------------
>>
>> Message: 3
>> Date: Wed, 23 Jun 2021 11:32:45 +0200
>> From: yvecai <ycai at mailbox.org>
>> To: talk at openstreetmap.org
>> Subject: Re: [OSM-talk] waterways through water bodies
>> Message-ID: <6fa8c2cb-c7aa-43da-7631-02c016aa657b at mailbox.org>
>> Content-Type: text/plain; charset=utf-8; format=flowed
>>
>> On 23.06.21 10:19, Martin Koppenhoefer wrote:
>> > I don’t understand the course of this river, it keeps flowing in huge
>> > lakes (typically in a big lake there isn’t river flow) where it also
>> > takes strange turns, and why is the lake at its beginning then not a
>> > part of it?
>>
>> What is shown here is the river modellized with OSM's common datamodel
>> where a river is represented with a connected set of ways, some of them
>> crossing trough lakes with a subjective path. What this simple datamodel
>> doesn't show, is the complex water flow trough water bodies.
>>
>> I guess you are free to replace the ways with your own subjective path
>> if you feel like to.
>>
>> Regards,
>>
>> Yves
>>
>>
>>
>>
>> ------------------------------
>>
>> Message: 4
>> Date: Wed, 23 Jun 2021 12:28:27 +0200
>> From: Martin Koppenhoefer <dieterdreist at gmail.com>
>> To: yvecai <ycai at mailbox.org>
>> Cc: osm <talk at openstreetmap.org>
>> Subject: Re: [OSM-talk] waterways through water bodies
>> Message-ID:
>>         <CABPTjTBndB4Cy6=
>> 3KKxaH3WPSvpgZVLxvhyqEw9W+845Oun5uQ at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Am Mi., 23. Juni 2021 um 11:37 Uhr schrieb yvecai via talk <
>> talk at openstreetmap.org>:
>>
>> > What is shown here is the river modellized with OSM's common datamodel
>> > where a river is represented with a connected set of ways, some of them
>> > crossing trough lakes with a subjective path. What this simple datamodel
>> > doesn't show, is the complex water flow trough water bodies.
>> >
>> > I guess you are free to replace the ways with your own subjective path
>> > if you feel like to.
>>
>>
>>
>> there are (at least, and related to this topic) 2 fractions of mappers, I
>> just wanted to raise awareness that mapping rivers where there often
>> aren't
>> (in lakes), is not the only common way of mapping. You could also leave
>> gaps for example.
>>
>> Cheers,
>> Martin
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>> ------------------------------
>>
>> Message: 5
>> Date: Wed, 23 Jun 2021 11:46:21 +0100
>> From: Andy Mabbett <andy at pigsonthewing.org.uk>
>> To: OSM talk mailing list <talk at openstreetmap.org>
>> Subject: [OSM-talk] App maps shady spots to guide Barcelona walkers
>>         along cooler routes | The Guardian
>> Message-ID:
>>         <CABiXOE=SYez2fps6=NjRAAj54qEbBpG7N=
>> rN+Qen5PawDOiu6g at mail.gmail.com>
>> Content-Type: text/plain; charset="UTF-8"
>>
>> This may be of interest:
>>
>>    https://www.theguardian.com/ environment/2021/jun/23/cool-
>> walks-app-maps-shady-spots- barcelona
>>
>> --
>> Andy Mabbett
>> @pigsonthewing
>> http://pigsonthewing.org.uk
>>
>>
>>
>> ------------------------------
>>
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>> End of talk Digest, Vol 202, Issue 20
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