LIDAXES (version 2) - Axes of concentration of runoff (vector)

Description

This vector data layer represents the natural concentration axes of runoff water, which correspond to thalwegs, valleys and dry valleys, established on the basis of the MNT LiDAR 2013-2014. The mapping of the natural concentration axes of runoff (LiDAXES) highlights areas at risk of runoff flooding and/or muddy flow arising from the natural concentration of surface runoff. It is a linear vector data layer with 5 classes defined by the size of the watershed drained by the concentration axes. The amount of runoff increases as the size of the upstream watershed increases. The following classes are distinguished: - concentrated runoff routes draining water from a catchment area between 3 and 10 ha; - concentrated runoff routes draining water from a catchment area between 10 and 20 ha; - concentrated runoff routes draining water from a catchment area between 20 and 50 ha; - concentrated runoff routes draining water from a catchment area between 50 and 100 ha; - concentrated runoff routes draining water from a catchment area of more than 100 ha. This layer has been established throughout the Walloon territory covered by the MNT LiDAR 2013-2014 (1m resolution). A pre-treatment of this NTM was first carried out to transform it into a 2m resolution with the aim of optimising the route of the axes. Indeed, too precise a resolution risks giving too much importance to too small elements of the landscape that are short-circuited during extreme rainy events. But it is the latter that cause the catastrophic damage. For reasons of readability, the information is only visible on scales between 1/1 000th and 1/5 000th. Concentrated runoff axes are integrated into the Walloon hydrographic network (RHW). Therefore, this data layer is an indispensable complement to the reading of LIDAXES data. In general, the axes of concentration of runoff find their outlet in a watercourse without leaving it. This layer is the result of a vectorization made from runoff axes in raster format (based on the "Internet" version of the raster). This version of the data layer is generic and corresponds to the external version made available by the Public Service of Wallonia. It is therefore available through viewing service and download subject to the conditions of access and use. For more details, refer to the methodological reports available in associated resources. Finally, the reader will find municipal statistics in the document "km of axes per municipality".

Resources

Name Format Description Link
0 https://geoservices.wallonie.be/arcgis/services/EAU/LIDAXES/MapServer/WMSServer?request=GetCapabilities&service=WMS
61 https://geodata.wallonie.be/dataset/3915ed27-f869-41ae-8eea-7821aa49d211
0 https://geoservices.wallonie.be/geoserver/inspire_nz/ows?service=WMS&version=1.3.0&request=GetCapabilities
23 https://geoservices.wallonie.be/arcgis/rest/services/EAU/LIDAXES/MapServer
61 https://geodata.wallonie.be/dataset/3915ed27-f869-41ae-8eea-7821aa49d211
0 https://geoservices.wallonie.be/geoserver/inspire_nz/ows?service=WMS&version=1.3.0&request=GetCapabilities
0 https://geoservices.wallonie.be/arcgis/services/EAU/LIDAXES/MapServer/WMSServer?request=GetCapabilities&service=WMS
23 https://geoservices.wallonie.be/arcgis/rest/services/EAU/LIDAXES/MapServer
61 https://geodata.wallonie.be/dataset/3915ed27-f869-41ae-8eea-7821aa49d211
23 https://geoservices.wallonie.be/arcgis/rest/services/EAU/LIDAXES/MapServer
0 https://geoservices.wallonie.be/arcgis/services/EAU/LIDAXES/MapServer/WMSServer?request=GetCapabilities&service=WMS
0 https://geoservices.wallonie.be/geoserver/inspire_nz/ows?service=WMS&version=1.3.0&request=GetCapabilities
23 https://geoservices.wallonie.be/arcgis/rest/services/EAU/LIDAXES/MapServer
0 https://geoservices.wallonie.be/geoserver/inspire_nz/ows?service=WMS&version=1.3.0&request=GetCapabilities
0 https://geoservices.wallonie.be/arcgis/services/EAU/LIDAXES/MapServer/WMSServer?request=GetCapabilities&service=WMS
61 https://geodata.wallonie.be/dataset/3915ed27-f869-41ae-8eea-7821aa49d211
61 https://geodata.wallonie.be/dataset/3915ed27-f869-41ae-8eea-7821aa49d211
23 https://geoservices.wallonie.be/arcgis/rest/services/EAU/LIDAXES/MapServer
0 https://geoservices.wallonie.be/geoserver/inspire_nz/ows?service=WMS&version=1.3.0&request=GetCapabilities
0 https://geoservices.wallonie.be/arcgis/services/EAU/LIDAXES/MapServer/WMSServer?request=GetCapabilities&service=WMS
23 https://geoservices.wallonie.be/arcgis/rest/services/EAU/LIDAXES/MapServer
0 https://geoservices.wallonie.be/arcgis/services/EAU/LIDAXES/MapServer/WMSServer?request=GetCapabilities&service=WMS
0 https://geoservices.wallonie.be/geoserver/inspire_nz/ows?service=WMS&version=1.3.0&request=GetCapabilities
61 https://geodata.wallonie.be/dataset/3915ed27-f869-41ae-8eea-7821aa49d211
0 https://geoservices.wallonie.be/arcgis/services/EAU/LIDAXES/MapServer/WMSServer?request=GetCapabilities&service=WMS
0 https://geoservices.wallonie.be/geoserver/inspire_nz/ows?service=WMS&version=1.3.0&request=GetCapabilities
61 https://geodata.wallonie.be/dataset/3915ed27-f869-41ae-8eea-7821aa49d211
23 https://geoservices.wallonie.be/arcgis/rest/services/EAU/LIDAXES/MapServer
0 https://geoservices.wallonie.be/geoserver/inspire_nz/ows?service=WMS&version=1.3.0&request=GetCapabilities
23 https://geoservices.wallonie.be/arcgis/rest/services/EAU/LIDAXES/MapServer
61 https://geodata.wallonie.be/dataset/3915ed27-f869-41ae-8eea-7821aa49d211
0 https://geoservices.wallonie.be/arcgis/services/EAU/LIDAXES/MapServer/WMSServer?request=GetCapabilities&service=WMS
23 https://geoservices.wallonie.be/arcgis/rest/services/EAU/LIDAXES/MapServer
61 https://geodata.wallonie.be/dataset/3915ed27-f869-41ae-8eea-7821aa49d211
0 https://geoservices.wallonie.be/geoserver/inspire_nz/ows?service=WMS&version=1.3.0&request=GetCapabilities
0 https://geoservices.wallonie.be/arcgis/services/EAU/LIDAXES/MapServer/WMSServer?request=GetCapabilities&service=WMS

Tags

  • eau
  • picc
  • ruissellement-concentré
  • pluie
  • catastrophes,-accidents,-risques
  • agriculture
  • fossé
  • ruissellement
  • flux
  • zones-naturelles,-paysages,-écosystèmes
  • thalweg
  • mnt
  • zones-à-risque-naturel
  • talweg
  • régional
  • eau-de-drainage
  • modèle-terrestre-numérique
  • cennic
  • drainage
  • sol
  • période-de-retour
  • réseau-de-drainage
  • vallée
  • dépression
  • axe
  • cours-d'eau
  • concentration
  • eau-d'infiltration
  • réseau-hydrographique
  • lidar
  • lidaxes
  • inondation
  • climat
  • erruissol
  • sous-bassin-hydrographique
  • eau-du-sol
  • accumulation
  • stockage-de-l'eau
  • écoulement
  • lidaxe

Topics

  • ENVI

Categories