[talk-au] Flood prone areas

John Smith deltafoxtrot256 at gmail.com
Thu Jan 6 02:44:52 GMT 2011


On 6 January 2011 07:10, Craig Feuerherdt <craigfeuerherdt at gmail.com> wrote:
> John,
> Would it not be better to map the extent of the flood plain rather than tag
> individual road segments? I know they have mapped the 'floodplain' across
> Victoria and then categorised it into probabilities ie 1:5, 1:10, 1:20, 1:50
> and 1:100 chance of flood. Obviously its another thing getting data out of
> State departments but I would have thought this was a better way to go.
> I agree there are valid cases where flood_prone=yes is an appropriate tag
> for a road segment although at what level do you do this ie an individual
> node on a road if it goes through a dip with a depth gauge through to a
> segment if there is a long stretch of low road.

I have nothing against using polygons, however the reason I wrote a
tag with respect to roads is this information is more readily
available to those doing surveys in the form of the water height
markers.



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