Ur not the only one.

the topic surely interest others but what I remember of/from the comments from 
before a number of ppl had doubts on how to do this -- and to what extent OSM 
is a good/ ideal/ suitable platform for gathering this data.

I gotta say that I still have enough other more tangible things to learn, 
master and do in OSM that I don't have too much opinion about these things.

Having said that I would like to get some thoughts, clarification and perhaps 
development especially regarding tagging of regularly varying barriers / 
road/path/track conditions such as flood_prone, muddy surface, ford vs dry 
river_bed, tagging of bits of road that always get washed out during rainy 
season, etc

I feel that both keys:
Intermittent=
And
Flood_prone=
can cater to these needs but I feel--and may well simply be ignorant here--that 
there aren't widely accepted conventions for using these.
... And should there be a explicit tag for seasonal -- or would it just be 
intermittent=seasonal??

How do I eg tag roads that are "higher-than-track" usually but that become 
tracks (as in: 4wd accessible only, sometimes only "special vehicle" like 
tractor, off-road truck or similar) during rainy times -- or that become 
completely inaccessible for any vehicles?

This is very typical in Haiti and I gather that same applies for all countries 
with heavy rains (especially combined with less-than-ideal infra).

All thoughts or pointers regarding this issue would b highly appreciated.

Let's take the case of "normal flooding" of rivers.
How about we call it just that?
flood_prone=seasonal/annual/intermittent/etc? 

Another tagging "scheme" I've thought a lot about but may not have yet used at 
all is for the tagging of more-or-less wide riverbeds that have more-or-less 
always a bit of water in the.
This could be another option for you:
Waterway=river/stream (for where the river/stream runs)
Combined with
waterway=riverbank
+ intermittent=yes/seasonal/annual/rainy_season/etc for the area where the 
river _runs_ during the rainy season/ floods.

>From the top of my head I would still tag something that says flood* in cases 
>/ for areas that are that: flooded.

In my understanding/ terminology flooding would be at least those areas where 
the water is more standing than running. .. I'm sure there are flood areas 
where the water is actually moving enough to talk about riverbank. Perhaps for 
those areas the riverbank=seasonal (or intermittent=yes/seasonal/etc) is a good 
idea?

Thoughts, just thoughts..
-Jaakko

Sent from my BlackBerry® device from Digicel
--
Mobile: +509-37-26 91 54, Skype/GoogleTalk: jhelleranta

-----Original Message-----
From: Stéphane Henriod <[email protected]>
Date: Sun, 24 Jun 2012 21:10:40 
To: Pierre Béland<[email protected]>
Cc: HOT Openstreetmap<[email protected]>
Subject: Re: [HOT] Re : New Bing Imagery in Mali and delimitation of
        riverbanks

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