LNV provided GIS services for the development of an up-to-date seamless geographic information system base map for the area within the City of Portland’s extraterritorial jurisdiction covering approximately 17-square-miles of land area. The base map included critical supporting layers representing the city’s customers and its transportation and utility systems. The city’s ultimate goal is to use the GIS database as an efficient solution for addressing its public works data management and maintenance services. The project was organized and executed in three phases, and the electronic map was developed using ESRI’s ArcView GIS software.