Where does Northwest Gas Pipeline run?

Northwest Gas Pipeline runs from Washington to Colorado, crossing United States.

How long is Northwest Gas Pipeline?

Northwest Gas Pipeline is 6,276 km long.

How much gas can Northwest Gas Pipeline carry?

Northwest Gas Pipeline has a design capacity of 38.8 bcm/y. Where every segment of a project repeats the same figure it is counted once rather than summed.

Is Northwest Gas Pipeline operating?

Northwest Gas Pipeline is operating, having started in 1965.

Who owns Northwest Gas Pipeline?

Northwest Gas Pipeline is owned by Williams Companies, as recorded in the current tracker release.

Does Northwest Gas Pipeline serve an LNG terminal?

Northwest Gas Pipeline passes within 25 km of 1 tracked LNG terminal. Proximity is not proof of a physical connection; each match is listed with its distance and how it was made.

Northwest Gas Pipeline: Washington–Colorado, United States

Route

Northwest Gas Pipeline runs from Washington to Colorado. The map draws the tracked route and any LNG terminal within 25 km of it.

Loads about 250 kB of map code and the country outline file.

From: Washington
To: Colorado
Start country: United States
End country: United States
Countries crossed: United States
Onshore / offshore: Not reported
Fuel: Gas
Region: Not reported
Route drawn on map: 4,714 km
GEM pipeline ID: P0230
Start year: 1965
GEM wiki page: gem.wiki

Segments

Each row is one row of GEM's pipeline file. Project-level figures repeated on every segment are counted once in the totals above.

Segment	Status	From → to	Length	Capacity	Diameter	Start	Route from
SYSTEM/NETWORK INFO	Operating	Washington → Colorado	6,276	38.8	—	1965	GEM's route file

Connected LNG terminals

Terminals whose coordinates fall within 25 km of this route, or whose name matches the pipeline. Proximity is not proof of a physical connection.

Terminal	Country	Import / export	Status	Distance	Matched by
Pacific NorthWest LNG Terminal	Canada	Export	Cancelled	—	name match

Owners and operators

Stakes as reported by GEM per segment, merged across segments.

Owners

Williams Companies100%

Parent companies

Williams Companies100%

In the news

Recent headlines that name Northwest Gas Pipeline. Matched by name, so it is approximate. Titles and links only; we store no article text.

See all tracked headlines.

Common questions

Generated from the same tracker fields as the tables above, so the two cannot disagree. Each answer stands on its own.

Where does Northwest Gas Pipeline run?: Northwest Gas Pipeline runs from Washington to Colorado, crossing United States.
How long is Northwest Gas Pipeline?: Northwest Gas Pipeline is 6,276 km long.
How much gas can Northwest Gas Pipeline carry?: Northwest Gas Pipeline has a design capacity of 38.8 bcm/y. Where every segment of a project repeats the same figure it is counted once rather than summed.
Is Northwest Gas Pipeline operating?: Northwest Gas Pipeline is operating, having started in 1965.
Who owns Northwest Gas Pipeline?: Northwest Gas Pipeline is owned by Williams Companies, as recorded in the current tracker release.
Does Northwest Gas Pipeline serve an LNG terminal?: Northwest Gas Pipeline passes within 25 km of 1 tracked LNG terminal. Proximity is not proof of a physical connection; each match is listed with its distance and how it was made.

More gas pipelines in United States

Listed in name order among the 515 pipelines tracked in United States, so projects with the same name sit together. A browse aid, not a claim that they are alike.

In our rankings

Where this appears in the site's generated top lists. Each ranking page states its own method before its table.

Longest gas pipelinesRanked #32 of the 50 listed

Background on the technology and the terms used on this page.

LNG against pipeline gas
A pipeline delivers gas at lower cost than LNG over land up to roughly two to four thousand kilometres, beyond which liquefaction wins, and across any significant body of deep water LNG usually wins at any distance.
How LNG works
Liquefied natural gas is natural gas chilled to about minus 162 degrees Celsius, at which point it becomes a liquid roughly 600 times smaller than the gas, so it can be shipped where no pipeline runs.
Mtpa, bcm and cubic metres
LNG capacity is quoted in three incompatible units, and the two conversions that matter are 1 million tonnes a year equals about 1.36 billion cubic metres of gas a year, and 1 cubic metre of liquid equals about 600 cubic metres of gas.
What terminal status actually means
A project status describes how far an LNG terminal or train has progressed, and the gap between proposed and operating is the single most misread number in the industry.

Cite this page

Reuse is welcome; please name the page and the tracker release it draws on.

Reference

LNG Atlas. (2026). Northwest Gas Pipeline: Washington–Colorado, United States. https://lngatlas.org/pipeline/northwest-gas-pipeline-us/ Data: Global Gas Infrastructure Tracker, Global Energy Monitor, November 2025, CC BY 4.0.

BibTeX

BibTeX entry

@misc{lngatlaspipelinenorthwestgaspipelineus2026,
  author = {{LNG Atlas}},
  title = {Northwest Gas Pipeline: Washington–Colorado, United States},
  year = {2026},
  url = {https://lngatlas.org/pipeline/northwest-gas-pipeline-us/},
  note = {Data: Global Gas Infrastructure Tracker, Global Energy Monitor, November 2025, CC BY 4.0},
}