What Does Cubic Feet per Second CFS Mean? What Does Cubic Feet per Second CFS Mean? TRRoutfitters2017-11-15T05:51:28+00:00 CFS = Cubic Feet Per Second 1 cubic foot per second = 7.4805 gallons flowing by a particular point in 1 What Does Cubic Feet per Second CFS Mean?TRRoutfitters2017-11-15T05:51:28+00:00