Oil Pipeline Throughput — Enbridge Mainline, Trans Mountain and Keystone

Average daily volume each pipeline moved in a month, in thousand cubic metres per day as the Canada Energy Regulator publishes it (one thousand cubic metres is about 6,290 barrels). Enbridge's Mainline is measured at Gretna, Manitoba, where it crosses into the United States, and includes a small volume of US crude that joins the line in Saskatchewan. Trans Mountain is the sum of its deliveries at Burnaby, Westridge and Sumas. Keystone is measured at the border near Haskett, Manitoba, from July 2010. Capacity and utilization are left out for all three lines. Keystone and Enbridge at Gretna do publish capacity at the points charted, but Trans Mountain publishes its capacity only for the system as a whole, on a row with no throughput (143.0 thousand m³/d available in June 2026, against 137.6 delivered), so its delivery points carry no capacity of their own and the three lines could not be compared on one basis.