Canal liners can be installed in an existing canal, though the process is more complex than installing them in a new canal. The first step is to prepare the existing canal by clearing out debris, vegetation, and loose material to create a smooth, stable surface. If the canal has significant damage or erosion, repairs may be necessary before installation.
The liner is then carefully positioned, and its edges are secured to prevent displacement. For flexible liners like geomembranes, they are unrolled along the canal, welded, or sealed to ensure a watertight barrier. In some cases, concrete liners may be poured over the canal's existing surface, though this may require additional structural preparation.
