What is the basic formula for calculating water horsepower?

The basic formula for calculating water horsepower is grounded in the relationship between flow rate, head (the height the water is lifted), and the conversion to horsepower. Water horsepower is a measure of the actual work done by the water moving through a system, and it is expressed in horsepower (HP).

The formula involves multiplying the flow rate in gallons per minute (gpm) by the height in feet (head) and then dividing by 33,000. This division by 33,000 is key because it converts the work done in foot-pounds per minute to horsepower, as one horsepower is defined as the ability to do 33,000 foot-pounds of work per minute.

When you multiply the flow rate and the head, you are calculating the total hydraulic energy available. Dividing this by 33,000 gives you the effective horsepower, since we want to express this value in horsepower terms.

This correct formula can help in systems where pumps are used, allowing operators to determine the efficiency and effectiveness of pumping operations. Understanding this formula is essential for any operator involved in managing surface water systems, ensuring they can accurately assess pump performance and energy consumption.

In this context, the other options do not accurately represent the correct method for calculating water horsepower. The