If The Water Table is Comparatively High

Answer: D. All the above

If the water table is comparatively high, the irrigation canal becomes useless due to large amounts of seepage, water logging of cultivated areas, and uncertain water demand.

Solution

If the water table is comparatively high, prerequisite of canal construction does not make any sense because cost in constructing the canal is worthless.

• If the water table is high, there is large seepage loss, evaporation loss and other types of losses in the canal during the irrigation process but if the water table is high, irrigation can be done with ground water without any losses. So, designing a canal is not necessary.
• Due to poor maintenance of the canal system, waterlogging of the cultivated areas takes place. So, irrigation can be done with ground water without any losses.
• Hence, the canal becomes useless.

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