# MONTANA - DAKOTA UTILITIES CO — Yellowstone County, MT

**Citation:** NPMS FIPS 30111 / OPID 12684  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

2.421358 active Natural Gas pipeline miles in Yellowstone County, MT; public NPMS snapshot 2026-07-16.

## Document text

MONTANA - DAKOTA UTILITIES CO (PHMSA OPID 12684) reported 2.421358 active Natural Gas pipeline miles in Yellowstone County, MT (county FIPS 30111) 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.

## Provenance

- Official: Yes
- Source: <https://www.npms.phmsa.dot.gov/Documents/NPMS_Active_Pipe_County_Mileage.xlsx>
- Source ID: `npms-public-summaries`
- SHA-256: `f454b817386ef43d50799b978f86f5f3a55c10df27d73662dacc980c774be248`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-25T00:19:21.788Z
- Document slug: `npms-mileage-e424bde9d758f09188b0fdd5`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "30111",
  "stateFips": "30",
  "state": "MT",
  "county": "Yellowstone County",
  "region": "Yellowstone County, MT",
  "operator": {
    "id": "12684",
    "name": "MONTANA - DAKOTA UTILITIES CO"
  },
  "commodity": "Natural Gas",
  "mileage": 2.42135796,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 7192,
    "rowSha256": "0cd1bf2325e0e240d5e9c3d004dcec8c111928147161d0b85fa840bde879c07c"
  },
  "citedSections": [
    "191.29"
  ],
  "caveat": "Public aggregate snapshot only. It is not a complete representation of exact pipeline locations, may be updated, and is not an agency finding about facility condition.",
  "jurisdiction": "US",
  "operatorName": "MONTANA - DAKOTA UTILITIES CO"
}
```