When lining an irrigation canal, the primary focus is on preventing water loss due to seepage and ensuring efficient water flow for agricultural use. The choice of liner material depends on factors like soil type, climate, and water quality. The liner should be impermeable to minimize water loss, especially in areas facing water scarcity.
Materials like geomembranes or concrete are often chosen for their durability and ability to withstand exposure to water and environmental conditions. The slope and shape of the canal are also important, as they can affect water speed and liner stability. In areas with fluctuating water levels, the liner material must be flexible to accommodate changes without cracking.