# NORTHWEST PIPELINE LLC — Marion County, OR

**Citation:** NPMS FIPS 41047 / OPID 13845  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

49.900852 active Natural Gas pipeline miles in Marion County, OR; public NPMS snapshot 2026-07-16.

## Document text

NORTHWEST PIPELINE LLC (PHMSA OPID 13845) reported 49.900852 active Natural Gas pipeline miles in Marion County, OR (county FIPS 41047) 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: `4115fe6422afb0780f4a1ace1edc37ee01a029fe7c8989997c0ecb2b137c6659`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T10:53:46.025Z
- Document slug: `npms-mileage-3b32219b847e6c0952d97379`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "41047",
  "stateFips": "41",
  "state": "OR",
  "county": "Marion County",
  "region": "Marion County, OR",
  "operator": {
    "id": "13845",
    "name": "NORTHWEST PIPELINE LLC"
  },
  "commodity": "Natural Gas",
  "mileage": 49.90085227,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 9900,
    "rowSha256": "c4f44eb49dad2bc11a2dd9cd911d8366a38f51d2223255396d781cc4dca99eb9"
  },
  "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 PIPELINE LLC"
}
```