I am getting a foot vs hiking feeling. Everybody knows a difference, nobody has 
the same difference. In the end, it does not matter.

Mvg Peter Elderson

> Op 11 nov. 2020 om 16:02 heeft Brian M. Sperlongano <[email protected]> 
> het volgende geschreven:
> 
> 
> If the consensus is to go with a limnological definition - I think that's 
> fine.  Let's lay out the limnological description of "pond" and "lake" and 
> let mappers sort out edge cases based on their best interpretation of the 
> definitions provided.  That's no different than the wetland= tag in which 
> there are lots of edge cases in the real world that are not quite one or the 
> other.  I assume there will be cases where "such and such pond" is properly 
> tagged water=lake and vice versa, but that's fine if there's a definition to 
> stand on.
> 
> If we are going with a "what people call it" definition, then the distinction 
> is purely redundant and worse may not translate appropriately into other 
> languages which might have a different array of terms for such bodies of 
> water.
> 
>> On Wed, Nov 11, 2020 at 8:30 AM Paul Allen <[email protected]> wrote:
>>> On Wed, 11 Nov 2020 at 13:12, Brian M. Sperlongano <[email protected]> 
>>> wrote:
>> 
>>> Is it actually desirable to distinguish a "lake" from a "pond"?  If so, 
>>> what is the difference?  Is it just that a body of water is named "XYZ 
>>> Pond" versus "XYZ Lake"?  If so, isn't water=pond versus water=lake derived 
>>> from and redundant with name?
>> 
>> It's possible to make the distinction.  It's not clear-cut.  There are 
>> several
>> definitions which are not entirely compatible with each other, but they
>> have more similarities than differences.  Edge cases are hard.
>> 
>> See, for example:
>> 
>> https://lakes.grace.edu/ponds-vs-lakes-whats-the-difference/
>> https://www.lakemat.com/whats-the-difference-between-a-lake-and-a-pond/
>> https://www.des.nh.gov/organization/commissioner/pip/factsheets/bb/documents/bb-49.pdf
>> https://www.lakescientist.com/lake-facts/how-lakes-differ/
>> 
>> Most of them agree that lakes have aphotic zones (deep areas that receive
>> no sunlight, preventing plants from growing there).  But wave height, 
>> uniformity
>> of temperature, and area of water may play a part.  And, of course, there's 
>> what
>> the locals call it.
>>> 
>>> Is there a conceivable scenario where a data consumer or renderer would 
>>> care about the distinction between these two tags?
>> 
>> Renderers will probably treat them identically  A limnologist would find the
>> distinction useful. 
>> 
>> There is also a distinction between pools and ponds.  However, since pools
>> are supplied by a spring or a stream, most can be distinguished by other
>> water=* occurring in conjunction with them (a lot of the ponds I've mapped
>> are actually pools).
>> 
>> https://www.askdifference.com/pool-vs-pond/
>> 
>> -- 
>> Paul
>> 
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