Securing the edges of a canal liner is crucial to maintaining its stability and effectiveness. The edges are typically anchored in trenches dug along the sides of the canal. These trenches are filled with soil, gravel, or concrete to hold the liner firmly in place and prevent it from shifting due to water flow or environmental factors.
For flexible liners like geomembranes, the edges may also be weighted down or mechanically fastened to ensure they remain secure. Proper sealing at the edges is essential to prevent water from seeping underneath the liner, which could compromise its performance.