The mighty Transco pipeline (Transcontinental Gas Pipe Line) is a 10,000-mile pipeline network with a mainline extending approximately 1,800 miles between South Texas and New York City. It is owned and operated by midstream giant Williams. Years ago Transco reversed much of its flow to send Marcellus/Utica gas southward. A good deal of M-U gas also flows into the NYC area via Transco as well. The Transco system recently added the Leidy South project in Pennsylvania to bump up Marcellus flows through the system. Those extra flows have led to an all-time high record flow rate on Transco of 17.15 million dekatherms (MMdt) on Jan. 3, 2022.
