# NORTHERN NATURAL GAS CO — Ontonagon County, MI

**Citation:** NPMS FIPS 26131 / OPID 13750  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

67.810498 active Natural Gas pipeline miles in Ontonagon County, MI; public NPMS snapshot 2026-07-16.

## Document text

NORTHERN NATURAL GAS CO (PHMSA OPID 13750) reported 67.810498 active Natural Gas pipeline miles in Ontonagon County, MI (county FIPS 26131) 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: `bbfdacaaa85c07fe2949b6e9680f0420ab874a32891effc370f7b048b1d98f7c`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T21:32:13.997Z
- Document slug: `npms-mileage-679db318fd06543068b1cedc`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "26131",
  "stateFips": "26",
  "state": "MI",
  "county": "Ontonagon County",
  "region": "Ontonagon County, MI",
  "operator": {
    "id": "13750",
    "name": "NORTHERN NATURAL GAS CO"
  },
  "commodity": "Natural Gas",
  "mileage": 67.8104981,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 5842,
    "rowSha256": "70c999388529965ea4bfdbe74381796f88d98ae5a81fbcd4c9e6b50899dfc36d"
  },
  "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": "NORTHERN NATURAL GAS CO"
}
```