BRADD Electrical Infrastructure

BRADD GIS staff digized the substation layer by following transmission lines. It is not intended to be an authoritative source of data as there are likely substations missing from the dataset.Electric Company offices were digitized by BRADD staff using existing address point information.The transmission line feature layer, utilizing data from Homeland Infrastructure Foundation-Level Data, depicts electric power transmission lines in the United States. Description U.S. Electric Power Transmission Lines This feature layer, utilizing data from Homeland Infrastructure Foundation-Level Data (HIFLD), depicts electric power transmission lines in the United States. Per HIFLD, "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." 138 Kilovolt Transmission Line Data currency: This cached Esri service is checked weekly for updates from its federal source (Electric Power Transmission Lines) Data modification: none For more information: Electricity Explained For feedback please contact: [e-mail] The Homeland Infrastructure Foundation-Level Data Per HIFLD, "The Homeland Infrastructure Foundation-Level Data (HIFLD) Subcommittee was established…to address improvements in collection, processing, sharing, and protection of homeland infrastructure geospatial information across multiple levels of government, and to develop a common foundation of homeland infrastructure data to be used for visualization and analysis on all classification domains."