How do we calculate this?
The diagrams below shows a simple way to assess the volume of an irregular shaped Fish Pond by breaking it down into smaller sub units

In this example the Fish Pond has been divided in two main sections A and B. Measure each section of the Water Feature in feet. All figures should be rounded UP to the nearest whole foot. For Pond Water Filtration purposes you would be better to over estimate the volume. (This only applies to Pond Filtration calculations and NOT for Pond or Fish Treatment - it is GOOD to over filter but BAD to over medicate).

The volume of each Fish Pond section is calculated using length x width x depth. This gives us an volume answer in cubic feet. The volumes of the two sections (A & B) should then be added together to give the total cubic feet capacity.

Each cubic foot holds 6¼ gallons or 28½  Litres of water.