How many pounds does a gallon of water weigh?

A gallon of water weighs approximately 8.3 pounds at standard temperature and pressure. This value is crucial in irrigation practices, as understanding the weight of water helps in calculating the load on systems like pumps and pipes, and in determining the amount of water needed for specific applications.

The weight of water is influenced by its density, which is about 62.4 pounds per cubic foot. Given that there are 7.48 gallons in a cubic foot, dividing 62.4 pounds by 7.48 gallons yields approximately 8.3 pounds per gallon. This understanding is essential for those working in irrigation, as accurate measurements are key to effective water management and irrigation system design.