NORTHWESTERN CORPORATION — Gallatin County, MT

Current as of source date Government source

Pipeline and Hazardous Materials Safety AdministrationOfficial agency material

Gallatin County, MTNORTHWESTERN CORPORATION (PHMSA OPID 31632) reported 67.532581 active Natural Gas pipeline miles in Gallatin County, MT (county FIPS 30031) in the public NPMS summary snapshot dated 2026-07-16. The snapshot includes active assets only and excludes permanently abandoned assets. Exact pipeline locations and restricted NPMS GIS data are not included.#