Significant investment is required for capturing, storing, and manipulating large quantitiesof utility asset information. Two of the most data intensive programs include maintenancemanagement systems (MMS) and geographic information systems (GIS). Often each of theseprograms is developed independent of the other but often contain duplicate information forasset inventories. Many organizations are looking for ways to integrate these systems toimprove efficiency of resources, data collection processes, and reduce data redundancy andmaintenance requirements. Early determination of integration options and methodologieswill result in significant increases in efficiency.This paper discusses the major phases of an asset inventory project and important actionsthat need to be considered. These actions include strategic information planning, softwareacquisition, integration, and implementation, and training and support.The paper presents lessons learned from all phases of asset data management activities andhighlight recommendations for successful integration of MMS and GIS.