Canal liners improve water retention by creating an impermeable barrier between the water and the surrounding soil. This barrier prevents water from seeping into the ground, ensuring that more water stays within the canal. Without a liner, water can easily be lost through seepage, particularly in porous or sandy soil, reducing the canal’s efficiency for irrigation or other uses.
By using materials like concrete, geomembranes, or compacted clay, canal liners block this loss, allowing for more consistent water flow and reducing the need for frequent refilling. The liner also protects against erosion, which could further disrupt water retention. As a result, the canal operates more efficiently, conserving water and improving functionality.
