"For a flexible pond liner, you will need an underlayment (geotextile ... by all sorts of wonderful wildlife," says Sean McMenemy, a nature expert and founder of Ark Wildlife.

Garden ponds are having a moment in 2025. As backyard water features surge in popularity, there’s a growing demand for ...

If the water level in a lined pond drops or the flow of water decreases, check that no part of the liner has slipped below the water level. If a pond is leaking, it needs to be drained and inspected.