How to Calculate Pond Liner Size!

Because many merchants offer pond kits today, it eliminates the need to determine the pond liner size.

Nevertheless, it is a good idea to know how anyway.

It's also best to wait until excavation is completed and final measurements are known.

Dick Schuck, the owner of Maryland Aquatic Nurseries, explained it to me this way:

Since my pond final dimensions were 15’ wide x 19’ long x 2’ deep, I would need a liner that is 21’ x 25’.

How did I arrive to this measurement?

Here is the formula:

Pond width + 2 times pond depth + 2’ for edging
(Example: The pond is 10 foot wide and 2 feet deep. Take 10 feet and add 4 feet (2 times pond depth). Than add 2 feet extra for edging.
The final measurements in this example = 16 feet)

Pond length + 2 times pond depth + 2’ for edging
(Example: The pond is 18 foot long and 2 feet deep. Take 18 feet and add 4 feet (2 times pond depth). Than add 2 feet extra for edging.
The final measurements in this example = 26 feet)

My final choice for pond liner was the highly recommended Firestone PondGuard 45 mil EPDM rubber liner. It offered long life, durability and fish safety.





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