A flow of 1.55 cubic feet/second is equivalent to how many gallons per minute (gpm)?

To convert a flow rate from cubic feet per second to gallons per minute, we can use the conversion factors between these units.

First, the calculation involves converting cubic feet to gallons. One cubic foot is equivalent to approximately 7.48 gallons. Therefore, to convert 1.55 cubic feet to gallons, you would multiply 1.55 by 7.48:

1.55 cubic feet/second × 7.48 gallons/cubic foot ≈ 11.6 gallons/second.

Next, since there are 60 seconds in a minute, you would multiply the flow in gallons per second by 60 to find the flow in gallons per minute:

11.6 gallons/second × 60 seconds/minute ≈ 696 gallons/minute.

This result confirms that a flow of 1.55 cubic feet/second is indeed equivalent to approximately 696 gallons per minute, making this the correct answer.

Understanding this conversion is essential for water operators, as they frequently need to switch between different flow measurement units to effectively monitor and manage water treatment processes.

The other options do not achieve this correct conversion, indicating they did not accurately perform the required calculations or utilize the conversion factors for cubic feet to gallons.