This is the official release of the 2019 Edition of the Utility and Pipeline Data Model (UPDM).
It is designed to support data management for the natural gas and hazardous liquids industries. Supporting the diverse needs of these industries means supporting multiple implementation patterns. Specifically a network topology with the Utility Network implementation pattern, and a linear referencing implementation pattern with the ArcGIS Pipeline Referencing solution..
NOTE: April 3,2020: Updated the Asset Package to remove the folder "ap_workspace", and to remove some outdated schematic design templates. With the ArcGIS Pro 2.5 release of Utility Network Package Tools, this is no longer needed, and is generated errors in some loading instances.
If you have questions, please post them to geonet, so everyone can see and share the information.
Esri Technical Lead – Natural Gas Industry