# NORTHWEST NATURAL GAS CO — Yamhill County, OR

**Citation:** NPMS FIPS 41071 / OPID 13840  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

15.556504 active Natural Gas pipeline miles in Yamhill County, OR; public NPMS snapshot 2026-07-16.

## Document text

NORTHWEST NATURAL GAS CO (PHMSA OPID 13840) reported 15.556504 active Natural Gas pipeline miles in Yamhill County, OR (county FIPS 41071) 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: `378094e8f2a527a379a18a39ade8ed988ab4a587ee05210e8fb9fccf959c7ee8`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T08:44:19.980Z
- Document slug: `npms-mileage-d978bae8737f6571fd3b6497`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "41071",
  "stateFips": "41",
  "state": "OR",
  "county": "Yamhill County",
  "region": "Yamhill County, OR",
  "operator": {
    "id": "13840",
    "name": "NORTHWEST NATURAL GAS CO"
  },
  "commodity": "Natural Gas",
  "mileage": 15.55650379,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 9927,
    "rowSha256": "f555a3ee893df5de6625be5a5d22a9896ba277f9ea1d7389a44363170a59ad9b"
  },
  "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": "NORTHWEST NATURAL GAS CO"
}
```