# Cubic Feet Per Second (CFS)5 definitions

Cubic Feet Per Second (CFS)

A unit used to measure water flow. One cubic foot per second is equal to 449 gallons per minute.

Cubic Feet Per Second (CFS)

A unit used to measure water flow. One cubic foot per second is equal to 449 gallons per minute.

Cubic Feet Per Second (CFS)

A rate of the flow, in streams and rivers, for example. It is equal to a volume of water one foot deep and one foot wide flowing a distance of one foot in one second. One cfs is equal to 7.48 gallons of water flowing each second.

Cubic Feet Per Second (CFS)

The flow rate or discharge equal to one cubic foot of water per second or about 7.5 gallons per second commonly used to indicate the rate of flow of a creek, river or flood, i.e., the volume of water that passes a given point in a given amount of time.

Cubic Feet Per Second (CFS)

A rate of the flow, in streams and rivers, for example. It is equal to a volume of water one foot high and one foot wide flowing a distance of one foot in one second. One "cfs" is equal to 7.48 gallons of water flowing each second. As an example, if your car's gas tank is 2 feet by 1 foot by 1 foot (2 cubic feet), then gas flowing at a rate of 1 cubic foot/second would fill the tank in two seconds.