Inspectioncurrent
NPMS FIPS 30039 / OPID 31632
NORTHWESTERN CORPORATION — Granite County, MT
Current as of source date Government source
Pipeline and Hazardous Materials Safety AdministrationOfficial agency material
View source Granite County, MTNORTHWESTERN CORPORATION (PHMSA OPID 31632) reported 58.317688 active Natural Gas pipeline miles in Granite County, MT (county FIPS 30039) 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.#