[HOT] Mapping Bassikounou, Mauritania - ICRC request
Pierre Béland
pierzenh at yahoo.fr
Thu Mar 6 22:54:21 UTC 2014
Bonjour Christian,
For the flood_prone, as you say it would be better to map the entire enrea eventually. This to be confirmed from people who could observe locally.
Pierre
________________________________
De : Christian Lenz (clenzch) <hot at clenz.ch>
À : "hot at openstreetmap.org" <hot at openstreetmap.org>
Envoyé le : Jeudi 6 mars 2014 17h40
Objet : Re: [HOT] Mapping Bassikounou, Mauritania - ICRC request
Pierre, merci beaucoup pour ta proposition. I started exactly as you propose, in principle following the tagging guide line in the wiki.
Does it make sense to tag "small" areas with "flood_prone"? Maybe
the whole area is flood prone during rainfall events. We don't know
how old the water is. Is it ground water? Was it raining a few days
before? I think it's in the middle of a desert...
Checking the available Bing imagery
(http://mvexel.dev.openstreetmap.org/bingimageanalyzer/#) I found that the images are mainly from Aug/2010 - Oct/2011. According to: http://de.climate-data.org/location/766672/ it seems (more or less) reasonable that the images might have been during a rainy time.
So my point is: Isn't there the possibility that we see much more
water than there is "in reality"? It might even be very seldom that
flooding occurs...
Is there any possibility to get IR channel imagery of Bing or
someone else with high enough resolution? Maybe we could use them to
distinguish deep water wells from shallow (and temporarily) flooded
zones?
Chris
On 03/06/2014 11:23 PM, Pierre Béland wrote:
Hi Christian,
>
>This is more or less man_made, like the ponds inside habitation
walls.
>
>Went back to https://wiki.openstreetmap.org/wiki/Key:water.
>
>I propose that we follow the suggestion to use the tag
combination
>natural=water
>
>water=pond.
>
>
>Pierre
>
>
>
>________________________________
> De : Christian Lenz (clenzch) <hot at clenz.ch>
>À : hot at openstreetmap.org
>Envoyé le : Jeudi 6 mars 2014 17h07
>Objet : Re: [HOT] Mapping Bassikounou, Mauritania - ICRC request
>
>
>
>Should we tag the ponds with "landuse=pond" or with "natural=water" and "water=pond"? For me it looks like the ponds are more natural than man_made... Or does anyone find some good guideline to distinguish man made ponds?
>
>Chris
>
>
>
>
>
>On 03/06/2014 10:59 PM, Pierre Béland wrote:
>
>I cannot spot water wells. The pattern I see in this area is that there is often what seems to be a pond inside the walls of habitations.
>>
>>Andrew and others might be better then me to
spot if any water wells.
>>
>>
>>
>>
>>Pierre
>>
>>
>>
>>________________________________
>> De : Severin Menard <severin.menard at gmail.com>
>>À : Pierre Béland <pierzenh at yahoo.fr>
>>Cc : "hot at openstreetmap.org" <hot at openstreetmap.org>
>>Envoyé le : Jeudi 6 mars 2014 16h07
>>Objet : Re: [HOT] Mapping Bassikounou, Mauritania - ICRC request
>>
>>
>>
>>Hi Pierre,
>>
>>
>>
>>
>>
>>
>>
>>On Thu, Mar 6, 2014 at 8:10 PM, Pierre Béland <pierzenh at yahoo.fr> wrote:
>>
>>Hi Severin
>>>
>>>In this Task Manager job
descripton, there are
examples give of
Intermittent ponds url=http://www.bing.com/maps/?v=2&cp=kn5s43gh3j74&lvl=19&dir=0&sty=b&form=LMLTCC
>>>
>>>If you zoom-out, it seems
that all this zone is
flood_prone. I think tha a
polygon should be trace
around all the zone with
the tag flood_prone=yes,
plus identify the more
permanent ponds. I mapped
rapidly inside Bassikounou
and have mapped a few of
the flood_prone areas as
an example.
>>>
>>I checked on OpenCycleMap and seems this area is not as low as Bassikounou itself. But I can ask the ICRC Watasan local staff in charge of the field assessment.
>>
>>>The film about the water
well operation is
interesting wit the
cattles operating around
the well. For Mali
activation we were able to
spot such wells by
observing odd looking
"fans" around them in the
aerial imagery made by the
cattles circulation.
>>>
>>Interesting. can you recognize such situation around Bassikounou? Would be good to document this with the examples provided through the discussions for Mali
>>
>>>See discussion for Mali https://wiki.openstreetmap.org/wiki/HOT/Mali_Activation_Discussion_with_humanitarians_2013-02-18#Discussion_of_water_wells
>>>
>>>
>>>
>>>
>>>Pierre
>>>
>>>
>>>
>>>________________________________
>>> De : Severin Menard <severin.menard at gmail.com>
>>>À : "hot at openstreetmap.org" <hot at openstreetmap.org>
>>>Envoyé le : Jeudi 6 mars 2014 12h14
>>>Objet : [HOT] Mapping Bassikounou, Mauritania - ICRC request
>>>
>>>
>>>
>>>Hi,
>>>
>>>
>>>ICRC requested us to map an AOI (Area Of Interest) around Bassikounou, a town close to the border with Mali, for a development project about drinkable water. The approach is the same than for Walikale in DRC. To know more: http://tasks.hotosm.org/job/447
>>>
>>>
>>>As you can see, I added a banner to make clear what the job is from, for and about. For sure HTML and wording could be improved, please make suggestions.
>>>
>>>
>>>The map features are a bit more various than usual (eg intermittent ponds - please find a link provided by the local Watsan specialist tp have an idea how to identify them on Bing imagery - and trees).
>>>
>>>
>>>I also added a picture and a video of Bassikounou that I found in the web, to have a better idea of what look like the streets and the outskirts.
>>>
>>>
>>>Sincerely,
>>>
>>>
>>>Severin
>>>
_______________________________________________
>>>HOT mailing list
>>>HOT at openstreetmap.org
>>>https://lists.openstreetmap.org/listinfo/hot
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>>_______________________________________________
HOT mailing list HOT at openstreetmap.org https://lists.openstreetmap.org/listinfo/hot
>
>
>_______________________________________________
>HOT mailing list
>HOT at openstreetmap.org
>https://lists.openstreetmap.org/listinfo/hot
>
>
>
_______________________________________________
HOT mailing list
HOT at openstreetmap.org
https://lists.openstreetmap.org/listinfo/hot
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/hot/attachments/20140306/209c6e1a/attachment-0001.html>
More information about the HOT
mailing list