[Tagging] Waterway equivalent of noexit=yes?
tod at fitchfamily.org
Sat Jul 18 19:53:09 UTC 2020
> On Jul 18, 2020, at 12:24 PM, Andy Townsend <ajt1047 at gmail.com> wrote:
> On 18/07/2020 19:41, Alan Mackie wrote:
>> On Sat, 18 Jul 2020 at 19:09, Paul Allen <pla16021 at gmail.com> wrote:
>> On Sat, 18 Jul 2020 at 18:53, Tod Fitch <tod at fitchfamily.org> wrote:
>> What I’d like is one or two tags to indicate that all visible indications of a water way ends at this point and that the QA tools should not flag them as errors to be fixed.
>> One of the things we need is an anti-spring. Marked on Ordnance Survey maps
>> as a sink. We have natural=sinkhole but that seems only to apply to a large
>> hole and/or depression.
>> The closest I can find on the wiki is manhole=drain? sinkhole=ponor seems to be for natural-looking versions.
> The "one that everyone* did in geography at school" is https://www.openstreetmap.org/node/944314148/history
> That's currently tagged as "waterway=cave_of_debouchement”.
The desert ones aren’t sink holes. Often the intermittent/ephemeral waterways spread out over the pediment  or alluvial fan  at the base of the mountains and simply dissipates.
Not yet mapped, but if you look at the Bing Imagery for this area  you can see a well defined “wash” (local term for this type of waterway) coming from the hills/mountains to the west and fan out to nothing over the desert floor in a north easterly direction.
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