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With this method you draw a sketch of your pond on a square graph paper and cout the number of squares in the different depth-zones of the pond. In this way you can make a good estimate of both the surface area and the volume of any irregular shaped pond.

Alternative 1 - use the built-in drawing tool

Select a sketch similar to the shape of your pond

or continue using your last sketch...

Alternative 2 - manually draw a sketch on a squared graph paper

Enter the dimensions of the pond and count the squares...

Draw a sketch of your pond and enter the pond dimensions of the pond.

Draw a sketch of your pond on a square graph paper. Enter the dimensions of the pond in the table. Count the number of squares in each depth zone (add together several squares that are partly inside a your sketch).

The shape of a garden pond is often irregular and it might be difficult estimate average values for length, width and depth when you compute its volume.

In order to get a more accurate result, you can divide the pond into smaller regular shaped areas and get the volume of the pond by adding the volume of each area. This technique can also be used for the depth-zones of the pond. Examples of how a complex shaped pond could be divided into regular shapes:

This guide let you use the following regular shapes:

It is important to measure length and width correct. In the regular shapes shown above length and width are marked with blue lines.

Enter length, width, depth and type of shape for each area. Some shapes can be calculated with the same formula - In the table belov you mark

	for any of the shapes:
	for any of the shapes:

You can only use this guide when you fill the pond with a constant flow of water.

Enter estimated values for the pond length, width and depth in the table.