Pond Liner Calculator

Estimate a rectangular liner sheet large enough to span the pond and extend down both sides with an edge overlap.

Extra liner beyond the pond edge on each side.

How it works

Twice the maximum depth and twice the edge overlap are added to both the pond length and width.

liner length = pond length + 2 × depth + 2 × overlap

Worked example

For a 10 ft × 8 ft pond, 2 ft deep with 1 ft edge overlap, the minimum liner rectangle is 16 ft × 14 ft.

Assumptions

  • The formula assumes the maximum depth is applied conservatively to both dimensions.

Limitations

  • Complex shelves, vertical walls and irregular profiles may require extra liner; confirm final dimensions before ordering.