This presentation discusses the evolution of GIS, the evolution of modeling, the links between the two, some of the best practices and new technology that have recently been developed in this area, and continuing challenges which should be considered.

• Considerations and process for building sustainable hydraulic models
• What the tools are to maintain associations between records in your source file and elements in your model (using the new GIS-ID property in WaterGEMS for example)
• Find and fix network topology and connectivity issues resulting from inconsistent source data