{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "This feature class/shapefile is for the Homeland Infrastructure Foundation Level Database (HIFLD) (https://hifld-geoplatform.opendata.arcgis.com/) as well as the Energy modelling and simulation community.", "description": "This feature class/shapefile represents electric power transmission lines. Transmission Lines are the system of structures, wires, insulators and associated hardware that carry electric energy from one point to another in an electric power system. Lines are operated at relatively high voltages varying from 69 kV up to 765 kV, and are capable of transmitting large quantities of electricity over long distances. Underground transmission lines are included where sources were available. The following updates have been made since the previous release: 7,935 features added, geographic coverage expanded to include Alaska and Hawaii, the METHOD and DATE fields renamed to VAL_METHOD and VAL_DATE respectively, and new fields have been included, namely, TYPE, NAICS_CODE, NAICS_DESC, and SOURCEDATE.", "summary": "This feature class/shapefile is for the Homeland Infrastructure Foundation Level Database (HIFLD) (https://hifld-geoplatform.opendata.arcgis.com/) as well as the Energy modelling and simulation community.", "title": "Transmission Lines", "tags": [ "homeland security", "Hawaii", "transmission lines", "emergency response", "voltage", "Continental United States", "electricity", "power lines", "homeland defense", "Alaska", "USA", "transmission", "Puerto Rico", "PR", "owners", "kilovolts", "energy infrastructure" ], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 0, "maxScale": 0, "spatialReference": "", "accessInformation": "Oak Ridge National Laboratory (ORNL) Geographic Information Science and Technology (GIST) Group, Los Alamos National Laboratory (LANL), Idaho National Laboratory (INL), National Geospatial-Intelligence Agency (NGA) Homeland Security Infrastructure Program (HSIP) Team", "licenseInfo": "None (Public Use). Users are advised to read the data set's metadata thoroughly to understand appropriate use and data limitations." }