Leaving a canal unlined can lead to several issues that compromise its efficiency. The most significant problem is water loss due to seepage, as unlined canals allow water to infiltrate the surrounding soil, reducing the amount available for irrigation or drainage. This can be especially problematic in areas facing water scarcity or where the canal serves agricultural purposes.
Without a liner, soil erosion is also a concern, as water flow can erode the canal bed and sides, leading to the destabilization of the canal and sediment buildup. Weeds and vegetation can thrive in an unlined canal, further reducing water flow and requiring frequent maintenance to clear them. Over time, this can lead to higher maintenance costs and decreased efficiency.
