> On Sep 25, 2016, at 3:30 AM, Warin <[email protected]> wrote:
> 
> Hi,
> 
> There is a draft to tag floodplains using the key natural.
> 
> 
> http://wiki.openstreetmap.org/wiki/Proposed_features/floodplain
> 
> 
> My thinking is that this would lead to conflicts with other 'natural' tags .. 
> like natural=scrub than may be applied to the same area.
> 
> 
> So .. what would be the best key to use for this feature/value?
> 
> I am thinking that as it is associated with a waterway (it must start to 
> flood from somewhere and that is usually a waterway) that the key waterway 
> should be used. It would have rendering similar to a lake - but 
> 'intermittent' so dashed lines rather than a solid colour.
> 
> 
> Thoughts?
> 
> 
> {There is presently flooding in some areas of Australia, why my thoughts have 
> turned to this. All too soon it will turn to bushfires}
> 

Concur that natural=floodplain will be in conflict with other tags likely to be 
used on the same area. natural=sand, natural=scrub, natural=grassland all come 
to mind for areas I am familiar with which are in flood plains.

On that page there is a link to flood_prone=yes which seems to be a usable tag 
to me, so I don’t see the reason for a new tag. Though “prone” has a 
connotation of fairly frequent occurrences while in the desert areas I am 
familiar with, you can go decades between events that will have enough water to 
cover a flood plain.



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