The Peak Drainage Discharge by Rational Formula estimates stormwater runoff using parameters such as rainfall intensity, catchment area, and runoff coefficient to determine the maximum flow rate. And is denoted by QR. Peak Drainage Discharge by Rational Formula is usually measured using the Cubic Meter per Second for Volumetric Flow Rate. Note that the value of Peak Drainage Discharge by Rational Formula is always positive. Typically, the value of Peak Drainage Discharge by Rational Formula is greater than 0.