[Tagging] landuse=water_wellfield

Guillaume Allegre allegre.guillaume at free.fr
Sun Apr 7 20:25:26 UTC 2013


I would like to propose a new tag for discussion, here and on the wiki page:

landuse=water_wellfield, a zone dedicated to water pumping for drinkable water networks, generally with the following characteristics:
- surrounded by a fence with locked gates, access reserved to the operator,
- sparsely scattered technical buildings (wells, pumps, power substations), linked by service tracks/roads,
- surface generally covered with grass, with rare other vegetation (scrubs, wood), since grass is easy to mow and can be used to trap superficial pollution. 

A water_wellfiel is a landuse per se, excluding any other activities in the same zone. It can be associated with a strict boundary=protected_area, or included into a larger, less strict one. 

In France, these landuses are known as "Champ captant" or "Champ de captage". The law defines 3 standard protection levels. A "champ captant" is often associated with the strictest one. Several examples in France (Google aerial) :
- near Lyon http://maps.google.fr/?ll=45.796127,4.893765&spn=0.006067,0.015707&t=k&z=17
- near Dijon http://maps.google.fr/maps?ll=47.322018,5.007051&spn=0.002949,0.007854&z=18
- near Grenoble http://maps.google.fr/maps?ll=45.103736,5.695596&spn=0.006141,0.015707&z=17

Other examples from other countries are very welcome.

 ° /\    Guillaume Allègre            OpenStreetMap France
  /~~\/\   Allegre.Guillaume at free.fr  Cartographie libre et collaborative
 /   /~~\    tél.      http://www.openstreetmap.fr

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