Annual Report Mileage for Natural Gas Transmission & Gathering Systems
April 1, 2026
Annual Report Mileage for Natural Gas Transmission & Gathering Systems
| YEAR | NUMBER OF RECORDS | PIPE TOTAL | ON-SHORE TRANS MISSION | OFF-SHORE TRANS MISSION | TOTAL TRANS MISSION | ONSHORE GATHERING | OFFSHORE GATHERING | TOTAL GATHERING |
|---|---|---|---|---|---|---|---|---|
2025 | 1,415 | 413,018 | 297,247 | 2,851 | 300,098 | 108,332 | 4,587 | 112,920 |
| 2024 | 1,455 | 411,827 | 298,033 | 2,834 | 300,867 | 105,855 | 5,105 | 110,960 |
| 2023 | 1,465 | 412,027 | 297,682 | 2,782 | 300,464 | 106,178 | 5,385 | 111,563 |
| 2022 | 1,464 | 413,279 | 298,111 | 2,774 | 300,886 | 106,871 | 5,522 | 112,393 |
| 2021 | 1,367 | 318,684 | 298,755 | 2,778 | 301,533 | 11,388 | 5,763 | 17,151 |
| 2020 | 1,387 | 319,235 | 298,837 | 2,836 | 301,673 | 11,611 | 5,951 | 17,562 |
| 2019 | 1,388 | 320,128 | 298,910 | 3,430 | 302,340 | 11,946 | 5,842 | 17,788 |
| 2018 | 1,349 | 319,544 | 298,523 | 3,105 | 301,628 | 11,714 | 6,202 | 17,916 |
| 2017 | 1,313 | 318,834 | 297,580 | 3,156 | 300,737 | 11,854 | 6,243 | 18,097 |
| 2016 | 1,288 | 318,145 | 296,985 | 3,298 | 300,282 | 11,518 | 6,345 | 17,863 |
| 2015 | 1,275 | 318,949 | 297,335 | 3,831 | 301,166 | 11,620 | 6,163 | 17,783 |
| 2014 | 1,261 | 319,354 | 297,902 | 3,923 | 301,824 | 11,441 | 6,089 | 17,530 |
| 2013 | 1,227 | 320,246 | 298,378 | 4,490 | 302,869 | 11,297 | 6,080 | 17,377 |
| 2012 | 1,189 | 319,914 | 298,613 | 4,769 | 303,382 | 10,586 | 5,947 | 16,532 |
| 2011 | 1,147 | 324,336 | 299,730 | 5,328 | 305,059 | 12,903 | 6,374 | 19,277 |
| 2010 | 1,080 | 324,458 | 299,360 | 5,447 | 304,808 | 12,965 | 6,694 | 19,650 |
| 2009 | 1,553 | 324,936 | 298,964 | 5,596 | 304,560 | 13,865 | 6,512 | 20,376 |
| 2008 | 1,496 | 322,913 | 297,267 | 5,914 | 303,181 | 13,191 | 7,472 | 20,663 |
| 2007 | 1,485 | 321,108 | 294,939 | 6,127 | 301,066 | 12,686 | 7,356 | 20,042 |
| 2006 | 1,499 | 321,222 | 293,706 | 6,619 | 300,324 | 13,348 | 7,550 | 20,898 |
| 2005 | 1,484 | 324,222 | 294,800 | 5,668 | 300,468 | 16,220 | 7,534 | 23,754 |
| 2004 | 1,427 | 327,994 | 296,945 | 6,057 | 303,001 | 17,397 | 7,595 | 24,992 |
| 2003 | 1,462 | 324,492 | 295,403 | 6,090 | 301,493 | 16,426 | 6,573 | 22,999 |
| 2002 | 1,454 | 325,741 | 296,794 | 6,205 | 302,999 | 17,426 | 5,316 | 22,742 |
| 2001 | 1,332 | 311,391 | 284,453 | 5,541 | 289,994 | 17,562 | 3,835 | 21,397 |
| 2000 | 1,168 | 326,518 | 293,716 | 5,241 | 298,957 | 21,879 | 5,682 | 27,561 |
| 1999 | 1,182 | 328,335 | 290,042 | 6,017 | 296,059 | 26,360 | 5,916 | 32,276 |
| 1998 | 1,169 | 331,874 | 295,601 | 7,108 | 302,709 | 23,492 | 5,673 | 29,165 |
| 1997 | 1,363 | 328,777 | 287,745 | 6,625 | 294,370 | 28,246 | 6,161 | 34,407 |
| 1996 | 1,284 | 313,218 | 277,861 | 6,811 | 284,672 | 23,962 | 4,584 | 28,546 |
| 1995 | 1,270 | 327,878 | 288,846 | 8,101 | 296,947 | 26,669 | 4,262 | 30,931 |
| 1994 | 1,230 | 332,861 | 293,438 | 8,107 | 301,545 | 27,404 | 3,912 | 31,316 |
| 1993 | 1,132 | 325,319 | 285,043 | 8,220 | 293,263 | 28,431 | 3,625 | 32,056 |
| 1992 | 1,183 | 324,097 | 283,071 | 8,397 | 291,468 | 28,909 | 3,720 | 32,629 |
| 1991 | 1,211 | 326,575 | 285,295 | 8,567 | 293,862 | 29,009 | 3,704 | 32,713 |
| 1990 | 1,106 | 324,331 | 283,815 | 8,110 | 291,925 | 29,252 | 3,154 | 32,406 |
| 1989 | 1,033 | 320,070 | 279,728 | 8,198 | 287,926 | 29,597 | 2,547 | 32,144 |
| 1988 | 1,021 | 315,859 | 275,931 | 7,886 | 283,817 | 28,941 | 3,101 | 32,042 |
| 1987 | 963 | 323,988 | 284,235 | 7,622 | 291,857 | 29,654 | 2,477 | 32,131 |
| 1986 | 1,008 | 321,653 | 280,667 | 9,291 | 289,958 | 29,737 | 1,958 | 31,695 |
| 1985 | 952 | 325,933 | 282,745 | 7,719 | 290,464 | 33,729 | 1,740 | 35,469 |
| 1984 | 885 | 321,915 | 277,601 | 7,353 | 284,954 | 33,290 | 3,671 | 36,961 |
Note:
A. After 2009 information is from Part J Miles of Pipe by Decade of Installation on Form PHMSA F7100.2-1 (8-2023)
B. 2009-2001 information is from Part B.3 Miles of Pipe by Decade of Installation on Form RSPA F7100.2-1 (01-02)
C. Prior 2001 information is from Part B.1 General System Description Miles of Pipeline on Form RSPA F7100.2-1 (11-85)
D. Historical totals may change as PHMSA receives supplemental information
E. Onshore gathering includes regulated gas gathering - Type A, B & C
Last updated: Wednesday, April 8, 2026