Definitions for

**"Million gallons per day"**US customary unit for flow measurement. One MGD equals 43.81 liters per second.

a measurement of water flow. It represents the number of million gallon increments of volume passing by a stationary point in a 24-hour period. Million gallons is abbreviated as MG.

(mgd) A large unit of water or wastewater flow, used in specifying system capacity; equivalent to 1.547 cfs, 694 gpm, and 0.0438 m3/sec.