Spotted thanks to Osmand:
https://www.openstreetmap.org/node/2401935175
Yves 

Le 5 août 2018 12:23:40 GMT+02:00, Volker Schmidt <[email protected]> a écrit :
>Flood marks and high water marks are not necessarily the same thing.
>Read
>https://en.wikipedia.org/wiki/High_water_mark
>to get the gist.
>There are ordinary high water marks (and I suppose also the opposite,
>ordinary low water marks) which are based on the regular tides in the
>area.
>A flood mark would be a marker for the water level reached in certain,
>particular events.
>I am not sure about terminology in different jurisdictions, but the
>concept
>seems to be clear to me that there are two different things we want to
>tag.
>
>
>On 5 August 2018 at 11:46, Martin Koppenhoefer <[email protected]>
>wrote:
>
>>
>>
>> sent from a phone
>>
>> > On 3. Aug 2018, at 18:03, Robert Szczepanek <[email protected]>
>> wrote:
>> >
>> > Indeed not all flood marks are really old/historic. But that
>threshold
>> is probably very fuzzy.
>>
>>
>> I would put it like this: although they are not all old, they are all
>> history related (they show a historic flood level)
>>
>>
>> Cheers , Martin
>> _______________________________________________
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>>
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