# KEYSPAN ENERGY DELIVERY - LONG ISLAND — Nassau County, NY

**Citation:** NPMS FIPS 36059 / OPID 11713  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

58.177119 active Natural Gas pipeline miles in Nassau County, NY; public NPMS snapshot 2026-07-16.

## Document text

KEYSPAN ENERGY DELIVERY - LONG ISLAND (PHMSA OPID 11713) reported 58.177119 active Natural Gas pipeline miles in Nassau County, NY (county FIPS 36059) 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: `3b5a3c6e1122966044bcfb43e8d6eee7046fae2745dbd90114dfefe72567c59b`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-24T20:31:26.829Z
- Document slug: `npms-mileage-2dc4147b3d25a177bda4ac2f`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "36059",
  "stateFips": "36",
  "state": "NY",
  "county": "Nassau County",
  "region": "Nassau County, NY",
  "operator": {
    "id": "11713",
    "name": "KEYSPAN ENERGY DELIVERY - LONG ISLAND"
  },
  "commodity": "Natural Gas",
  "mileage": 58.17711934,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 7974,
    "rowSha256": "cabe4911db5efcd5d6149f9ebb386591b606f6402e7d3281f41c34e74d5a73f0"
  },
  "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": "KEYSPAN ENERGY DELIVERY - LONG ISLAND"
}
```