How to install a Pond liner on a sloping surface

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installing pond liner on a slope

This article presents a step by step approach for the installation of a pond liner on a sloping surface area. Each step is depicted by a vertical cross section of the pond location representing the vegetation, a layer of arable soil (high in organic matter) and the subsoil.

The installation of a pond liner on a sloping area involves the following steps:

Interested in learning about how to install a pond liner on a flat surface? Check it out here!

Let’s go sloping!

Initial situation

This is the cross-section of the sloping pond area with grass vegetation, arable soil, and subsoil.

Platform preparation

Platform preparation by clearing vegetation and excavation of arable soil and subsoil as needed to create a perfectly flat surface to accommodate the pond, the anchor trenches for the liner, and a drain at the uphill side of the pond for lateral drainage. It is recommended to keep the plants, the arable soil, and the subsoil separated for possible reuse of the plants and arable soil around the pond or elsewhere.

Installing the liner

Installing the liner requires the following actions:

  • Raising the rim of the pond with subsoil, compaction, and leveling to prevent surface water inflow
  • Excavation of pond and anchor trench directly behind the raised rim of the
  • Positioning of liner
  • Gradual filling of the pond with wrinkles in the liner
  • Fixing the liner in the trench, cutting off the excess length of liner, and backfilling the trench.

Full details of these actions are presented in our article “How to install a Pond liner on a flat surface.” Here, we just present the end result of the liner installation.

Soil conservation and surface water inflow prevention

There are four main activities to prevent erosion and unwanted inflow of surface water in the pond:

  • Brickwork or natural stone to protect the liner on the rim of the pond
  • Consolidation of uphill steep side slope with bricks and natural stone.
  • Gravel for drainage of surface water around the uphill side of the pond
  • Grass or protective vegetation on a downhill slope

Here is the cross-section of the pond with the necessary measures!

To complete the pond construction, you proceed to install equipment and to decorate your pond with plants, stones, and fish. Success!!

Photo of author


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