How do you figure out how much water is in a pond?

Answer 1

You can't calculate because the amount will vary according to the time of day, the temperature, the humidity, the wind and other factors.

What you can do is measure how much water is there at the beginning of a day, or a week, and then measure again how much is there at the end of your time period.

You will then know that 5 litres evaporated that day, or whatever the result was.

Answer 2

The pond's dimensionality must first be determined. This will be done in one of two ways: either by multiplying the product of its length and width by its depth, or by multiplying the product of the square of its radius (half its diameter) and pi (3.14) by its depth. If your measurements are made in feet, then your dimensionality will be in cubic feet. Second, convert cubic feet to gallons by multiplying them by 7.48051945. I know this is confusing, so here is an example:
Let's say your pond is round. It measures one hundred feet from one side to the other (this 100 feet is known as the diameter), and it is twenty-five feet deep. The problem setup is as follows:
First determine cubic footage:
50 x 50 x 3.14 x 25 = 196,250 cubic feet
Next, convert cubic footage to gallons:
196,250 x 7.48051945 = 1,468,051.9 gallons

Answer 3

See the related link.