EIA - Natural Gas Pipeline Network - Largest Natural Gas Pipeline Systems

About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates
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Pipeline Name	Market Regions Served	Primary Supply Regions	States in Which Pipeline Operates	Transported in 2007 (million dekatherm)¹	System Capacity (MMcf/d) ²	System Mileage
Thirty Largest U.S. Interstate Natural Gas Pipeline Systems, 2008 (Ranked by system capacity)
Columbia Gas Transmission Co.	Northeast	Southwest, Appalachia	DE, PA, MD, KY, NC, NJ, NY, OH, VA, WV	1,849	9,350	10,365
Transcontinental Gas Pipeline Co.	Northeast, Southeast	Southwest	AL, GA, LA, MD, MS, NC, NY, SC, TX, VA, GM	2,670	8,466	10,450
Northern Natural Gas Co.	Central, Midwest	Southwest	IA, IL, KS, NE, NM, OK, SD, TX, WI, GM	1,055	7,442	15,874
Texas Eastern Transmission Corp.	Northeast	Southwest	AL, AR, IL, IN, KS, KY, LA, MI, MO, MS, NJ, NY, OH, OK, PA, TX, WV, GM	1,438	7,332	9,212
ANR Pipeline Co.	Midwest	Southwest	AR, IA, IL, IN, KS, KY, LA, MI, MO, MS, NE, OH, OK, WI, GM	2,044	7,129	10,600
Tennessee Gas Pipeline Co.	Northeast, Midwest	Southwest, Canada	AR, KY, LA, MA, NY, OH, PA, TN, TX, WV, GM	1,801	6,686	14,463
Dominion Transmission Co.	Northeast	Southwest, Appalachia	PA, MD, NY, OH, VA, WV	621	6,655	3,505
Gulf South Pipeline Co.	Southeast, Southwest	Southwest	AL, FL, LA, MS, TX, GM	676	6,260	6,886
El Paso Natural Gas Co.	Western, Southwest	Southwest	AZ, CO, NM, TX	1,638	6,182	10,302
Centerpoint Gas Transmission Co.	Southwest	Southwest	AR, KS, LA, OK, TX	960	5,385	6,374
Northwest Pipeline Corp.	Western	Canada, Central	CO, ID, OR, UT, WA, WY	812	4,950	3,880
Natural Gas Pipeline Co. of America	Midwest	Southwest	AR, IA, IL, KS, LA, MO, NE, OK, TX, GM	1,783	4,848	9,306
Colorado Interstate Gas Co.	Central	Central, Southwest	CO, KS, OK, TX, WY	854	4,099	4,143
Texas Gas Transmission Corp.	Midwest	Southwest	AR, IN, KY, LA, MS, OH, TN	784	4,065	5,671
Southern Natural Gas Co.	Southeast	Southwest	AL, GA, LA, MS, SC, TN, TX, GM	867	3,967	7,635
Algonquin Gas Transmission Co.	Northeast	Southwest	CT, MA, NJ, NY, RI	366	3,347	1,128
Questar Pipeline Co.	Central	Central	CO, UT, WY	408	3,192	1,858
Trunkline Gas Co.	Midwest Southeast	Southwest	AR, IL, IN, KY, LA, MS, TN, TX, GM	646	3,025	4,202
Great Lakes Gas Transmission Co.	Midwest	Canada	MI, MN, WI	833	2,958	2,115
Panhandle Eastern Pipeline Co.	Midwest	Southwest	IL, IN, KS, MI, MO, OH, OK, TX	662	2,840	6,445
Southern Star Central Pipeline Co.	Central	Central	CO, KS, MO, NE, OK, TX, WY	318	2,801	5,803
Wyoming Interstate Gas Co.	Central	Central	CO, WY	756	2,736	848
Gas Transmission Northwest Corp.	Western	Canada	ID, OR, WA	838	2,636	1,356
Northern Border Pipeline Co.	Midwest, Central	Canada	IA, IL, IN, MN, MT, ND, SD	886	2,626	1,400
Transwestern Gas Co.	Western	Southwest, Central	AZ, CO, NM, TX	645	2,439	2,387
Columbia Gulf Transmission Co.	Southeast, Northeast	Southwest	KY, LA, MS, TN, GM	1,113	2,386	4,124
National Fuel Gas Supply Co.	Northeast	Canada, Appalachia	NY, PA	307	2,312	1,481
Florida Gas Transmission Co.	Southeast	Southwest	AL, FL, LA, MS, TX, GM	750	2,217	4,889
Alliance Pipeline Co. (US)	Midwest	Canada	ND, MN, IA, IL	632	2,053	888
Kern River Gas Transmission Co.	Western	Central	CA, NV, UT, WY	826	1,833	1,680
Sub-total				29,838	132,217	169,270
Other Interstate Systems	- -	- -	- -	6,868	50,673	48,036
Total				36,706	182,890	217,306
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¹ This figure, found on Line 19 of Gas Accounts in FERC Form 2, Page 520, represents throughput "transported for others" only. It does not include natural gas transported in association with gathering, distribution, or storage operations.
² Capacity levels are reported to FERC in Btu, dekatherms, or volumetric units. For this presentation, reported capacity figures are presented as volumetric (MMcf/d = million cubic feet per day) assuming a conversion factor of 1 MMcf/d = 1 MDth/d (thousand dekatherms per day) = 1 Bbtu/d (billion btus per day).
Note: GM = Gulf of Mexico.
Source: Federal Energy Regulatory Commission (FERC), Capacity: FERC Annual Peak Day Capacity Report Section 284.13(d); Mileage & Transport: FERC Form 2 & 2A "Major and Non-major Natural Gas Pipeline Annual Report," 2007, adjusted for natural gas pipeline projects completed in 2008, as found in the Energy Information Administration, Natural Gas Transportation Information System, Natural Gas Pipeline Projects Database, as of December 31, 2008.