**Calculating Water Volume**

Knowing the size of a pond is important for several reasons. One reason you might want to calculate pond volume is if you plan to place Goldfish, Koi, Shubunkins or other fish in a pond. A pond will only support so many fish in a given area. Another factor is water plant placement, too many plants and plant life will suffer and perhaps die, wasting both time and resources. A third reason is determining the amount of chemicals such as algae removers or clarifiers that may be used in a pond. Of course, there are many other factors that need consideration, but knowing the water volume is certainly important. The information below assumes average pond installations, however we know that nothing is absolute and you may need to divide your pond into several small areas and then use two or more of the formulas listed. Getting close to knowing the water volume is far better than guessing!

So let’s start by calculating the water volume in a pond? There are 7 ½ gallons of water in a cubic foot. If your pond is rectangular or square, take the length of the pond times the width times the depth and multiply that number by 7.50 which will give you the gallons of water in the pond. If your pond is oval take the length times the width times the depth times 6.7 which will provide you with the gallons of water and if your pond is round, take the length times the width times the depth times 5.9, giving you the gallons of water in your pond. Here is an example: assume the pond is 10 ft. long, 5 ft. wide and 2 ft. deep – 10’ X 5’ X 2’ X 7.50 = 750 gallons.