The term "thousand million cubic feet" (TMC or TMC ft) refers to a significant volume of water in a reservoir. In dams, TMC is frequently used to denote the incoming and outgoing water flow.

TMC ft (thousand million cubic feet) is a unit of measurement for a huge volume of water in a tank. TMC is frequently used to show the flow of water in and out of dams. 1 TMC = 1,000,000,000 cubic feet = 10 9 cubic feet = 1 billion cubic feet