Volume XL-3/W3
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-3/W3, 625-628, 2015
https://doi.org/10.5194/isprsarchives-XL-3-W3-625-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XL-3/W3, 625-628, 2015
https://doi.org/10.5194/isprsarchives-XL-3-W3-625-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

  20 Aug 2015

20 Aug 2015

SPATIAL DATA UNCERTAINTY IN A WEBGIS TOOL SUPPORTING SEDIMENTS MANAGEMENT IN WALLONIA

N. R. Stéphenne1, B. Beaumont1, M. Veschkens1, S. Palm2, and C. Charlemagne3 N. R. Stéphenne et al.
  • 1ISSeP, Institut Scientifique de Service Public, 200 rue du Chéra, 4000 Liège, Belgium
  • 2Geomatic Department, SPW, Service Public de Wallonie, Chaussée de Charleroi, 83b, 5000 Namur, Belgium
  • 3DGO3, SPW, Service Public de Wallonie, 15 av. Prince de Liège, 5100 Jambes, Belgium

Keywords: WebGIS, River Sediments, Basin Management Plans, Environmental Communication, Geospatial Data, Uncertainty, Quality Assessment

Abstract. This paper describes a WebGIS prototype developed for the Walloon administration to improve the communication and the management of sediments dredging actions carried out in rivers and lakes. In Wallonia, levelling dredged sediments on banks requires an official authorization from the administration. This request refers to geospatial datasets such as the official land use map, the cadastral map or the distance to potential pollution sources. Centralising geodatabases within a web interface facilitate the management of these authorizations for the managers and the central administration. The proposed system integrates various data from disparate sources. Some issues in map scale, spatial search quality and cartographic visualisation are discussed in this paper with the solutions provided. The prototype web application is currently discussed with some potential users in order to understand in which way this tool facilitate the communication, the management and the quality of the authorisation process. The structure of the paper states the why, what, who and how of this communication tool with a special focus on errors and uncertainties.