[Tagging] Incorrectly tagging locks on rivers as canals

Dave F davefoxfac63 at btinternet.com
Thu Apr 25 10:04:08 UTC 2019


The water flowing through it is still river water.

On 24/04/2019 20:47, François Lacombe wrote:
> Hi Dave
>
> I'm happy to tag as canal the man_made space between two lock gates.
> This is often concrete lined and sized accordingly to allow boats to pass
> through.
>
> The main difference with rivers going through cities is it's often the
> original natural course.
> A canal is built by man, Thames river wasn't built by man I think,
> Locks usually does.
>
> To me it's more confusing to tag lock gates and dams in waterway key
> instead of man_made but it's another topic
>
> All the best
>
> François
>
> Le mer. 24 avr. 2019 à 20:40, Dave F via Tagging <tagging at openstreetmap.org>
> a écrit :
>
>> Hi
>>
>> This maybe UK specific but it's a tagging problem & maybe wider spread.
>>
>> To allow navigation, rivers occasional have lock gates, usually as a
>> separate channel. Some contributors tag these incorrectly as
>> waterway=canal for the centre line.
>>
>> https://www.openstreetmap.org/way/347369154
>>
>> However, they are still rivers, they just have canalized sections. If
>> this logic was applied to all lengths of river every one that passes
>> through a city, such as the East River, Seine or Thames would be tagged
>> as canal, which is of course, ridiculous.
>>
>> Canals are man-made channels to allow water to flow where it naturally
>> wouldn't
>> If the locks were removed from rivers the water would still flow.
>>
>> Canal is a noun.
>> Canalise is a verb.
>>
>> Cheers
>> DaveF
>>
>>
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