WORKSHOP DESCRIPTION

WORKSHOP ON GISRed v1.0

CCWI 2005. COMPUTING AND CONTROL IN THE WATER INDUSTRY

DESCRIPTION

Modelling water distribution networks (WDS) is currently a need for improving behaviour of existing networks and for planning properly future developments. However building a mathematical model from maps and field data becomes a tedious task. Geographical Information Systems (GIS) offers the possibility of dealing with the huge number of components that usually constitute a WDS in order to build the model layout, load the model according to demands and field data, and calibrate it to match real measurements. However most of GIS applications are oriented to managing assets and just few of them include facilities for model building, which in turn are usually expensive.

GISRed is a low cost solution which exploits the capabilities of ArcView 3.2 to carry out all steps involved in a model buil-out and analyse multiple scenarios. In spite of ArcView being conceived just as a viewer, most capabilities of the EPANET 2.0 GUI have been reproduced or improved through programming. A GISRed project supports a relational database to allocate all model data, and a customized view called ‘scenario’, able to keep track of the topological network connectivity. There are more than 30 dialogs to enter all data required. Moreover, GISRed offers tools to import CAD or Shape files, check the network connectivity, interpolate elevations, allocate demands and calibrate the model. Finally the model can be run from EPANET or from GISRed itself in order to match the results against background themes and produce excellent maps.

Most GISRed capabilities are provided as freeware in the reduced version, with no more limitations regarding the network size than those physically imposed by the computer. By now, elevation interpolation, demand allocation and model calibration capabilities are included only in the full version.

During the workshop, the fundamentals, the database structure and the main features of GISRed 1.0 will be presented in a preliminary session. Then up to 10 tutorials will be followed interactively with the attendants in a computer classroom, covering all features of GISRed v1.0, from capturing data to matching the results against the background. Also some case studies on master planning, including the Valencia network made up of 40,000 pipes, will be shown. The workshop will be completed with the introduction of the latest developments done to keep the model continuously updated and utilise it for real time operation by means of the applications GISRed v2.0 and SCARed.

Good skills in EPANET 2 and ArcView are strongly recommended to follow the course optimally .