20251212 12022600 1.0 TRUE GIS1.Major_Transmission_Ln The data set contains utility transmission lines and transformer stations as created from the planimetric mapping effort for Montgomery County. The data is attributed according to a feature coding scheme developed by the GeoMaP consortium.11/10/2015: Entire countywide data updated by KUCERA INTERNATIONAL. Source date: 4/10/2014 imagery