GIS professionals focused on Hamilton County, Illinois, will find the US Electric Power Transmission Lines dataset highly relevant. This dataset provides detailed information on overhead AC transmission lines currently in service within the county. Managed by Ameren Illinois Company, it offers insights into connections between the West Frankfort East and Norris City North substations at a 345kV voltage class. Ideal for projects requiring up-to-date infrastructure data, this dataset includes precision details verified through imagery methods as of 2015.