[HOT] (hotosm#711) Wells in Kayes/Mali?

Pierre Béland pierzenh at yahoo.fr
Fri Oct 31 01:37:03 UTC 2014


Sergio, 

after exchanging with Andrew on what we both see on the screen, I realize that looking at my screen with a certain angle, contrasts where better to see paths but the colors of certains objects are affected. In this image, with a certain angle, trees contrast is particularly exegarated and make them look as black spots.
On the top left corner of the place I now see what looks to be a well. Pierre 

      De : Pierre Béland <pierzenh at yahoo.fr>
 À : S Volk <svolk2 at hotmail.com>; "hot at openstreetmap.org" <hot at openstreetmap.org> 
 Envoyé le : Jeudi 30 octobre 2014 18h43
 Objet : Re: [HOT] (hotosm#711) Wells in Kayes/Mali?
   
Wells are an important information to provide. But the Bing Imagery shows exactly what I was talking about before. If we look in the streets around, we see various water pools that could be left after heayv rain. 

To my point of view, we cannot conclude from this imagery that there is a well. I do not see a structure that would confirm a well in the midlle of the place. 

It is not easy to spot these from aerial imagery. For the Mali Activation, north of Mali early 2013, we could find wells with traces like a propeller around the well. This is done by using livestock moving around to lift the water out of the well.  Pierre 

      De : S Volk <svolk2 at hotmail.com>
 À : "hot at openstreetmap.org" <hot at openstreetmap.org> 
 Envoyé le : Jeudi 30 octobre 2014 17h49
 Objet : [HOT] (hotosm#711) Wells in Kayes/Mali?
   


#yiv1579724980 #yiv1579724980 -- .yiv1579724980hmmessage P{margin:0px;padding:0px;}#yiv1579724980 body.yiv1579724980hmmessage{font-size:12pt;font-family:Calibri;}#yiv1579724980 If it's useful:
-Example of recently constructed well in Didieni/Mali (mounts of debris around, walls don't rise above (redundant redundancy) the ground):http://appropriateprojects.com/node/1022
-What seems new wells in Kayes, too (debris seen, walls not seen; seems square hole, possibly on the going of digging at the moment of satellite image):http://www.openstreetmap.org/edit?editor=id&%20#map=20/14.44191/-11.46058
Screen Capture:
     
     

Regards, Sergio



 #yiv1579724980 #yiv1579724980 -- .yiv1579724980ExternalClass .yiv1579724980ecxhmmessage P {padding:0px;}#yiv1579724980 .yiv1579724980ExternalClass body.yiv1579724980ecxhmmessage {font-size:12pt;font-family:Calibri;}#yiv1579724980  
_______________________________________________
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/20141031/fa7ed244/attachment.html>


More information about the HOT mailing list