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GIS and hydraulic model integration: Implementing cost‐effective sustainable modeling solutions

For many utilities, the integration of a geographic information system (GIS) with a water distribution‐system hydraulic model is an elusive and frustrating goal. Distribution‐system models are becoming increasingly complex and are being used more regularly for various applications. These models are also becoming more closely integrated with utilities— GISs. Many hydraulic models now include most—if not all—of the pipes in the distribution system. The trend in hydraulic modeling has been to integrate the vast amount of data contained in a utility—s constantly changing GIS with the less frequently modified hydraulic model. This article explores issues related to the maintenance and update of the model piping network and its relationship to the GIS, focusing on maintenance of the hydraulic model—s physical facilities and specifically on the piping network. General recommendations are presented to improve the cost‐effectiveness of maintaining an updated hydraulic model.