Canal liners prevent seepage by creating a barrier between the water and the surrounding soil. Materials like geomembranes, compacted clay, and concrete are designed to be impermeable or have very low permeability, significantly reducing water loss.
The effectiveness depends on the quality of the liner material, the precision of installation, and the maintenance of seams and edges, as these are common areas where leaks may occur. When properly installed and maintained, canal liners can achieve near-complete water retention, improving the efficiency of water delivery systems and conserving resources.
