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# How Do I Figure Out How Much Water Is In My Pond?

Using the right amount of product in your pond is important. Here are some simple formulas to estimate the amount of water that is in your pond so you can treat correctly.

﻿Ponds Volume (in gallons)

Square or Rectangle:
Length x Width x Average Depth x 7.48 = Gallons

Circle:
3.14 x Radius x Radius x Average Depth x 7.48 = Gallons

Irregular Shape:
Average Length x Average Width x Average Depth x 7.48 = Gallons

If you have an irregular shape pond, you can also divide the pond up into separate sections that are simpler to calculate. For example, a kidney-shaped pond could resemble two circles pushed together. Make the calculations and add them up to get the total number of gallons of water in the pond.

It is best to err on the low side so that you do not over-treat the body of water.

Convert Gallons to Acre-Feet:  Divide Number of Gallons by 325,851

Convert Acre-feet to Gallons:  Multiply number of Acre-feet by 325,851

A few more acre-foot facts...
...One acre-foot is equivalent to one-acre of water that is one-foot deep.
...An acre is a measure of surface area that totals 43,560 square feet.
...An acre can be of any shape—a rectangle, a triangle, a circle, or even a star—so long as its area is exactly 43,560 square feet.

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