Cadastre São Francisco

Contract: Cadastral Survey of the Water Supply Grid of São Francisco


In the frame of a technical-scientific study for the rehabilitation of the water supply grid of Alcochete a cadastral survey of the supply grid of São Francisco was executed. For this purpose, the existing grid was mapped in respect to position and height and such the line diagrams were updated.


Aim of the project was, to obtain a GIS model of the water supply grid, by means of which and on the base of grid-related meta data operation was simulated, critical points were identified and well-founded data were made available for renovations and extension.

The works were completed within the frame of provided terms and budgets to the entire satisfaction of the client and it is foreseen to implement all suggested solutions. Therefore, it is now intended to extend the cadastre to the rest of the entire public water supply grid of the district.


  • Mapping of the grid in respect to position and height by locating and geocoding of the pipelines and valves (GIS - geographic information system)
  • Mathematical modelling of the system
  • Hydraulic simulation of the existing system
  • Preparation of shape files
  • Prioritisation of the critical points in a summary sheet
  • Presentation of possible solutions