Question

In which of the following phenomenon there is a continuous direct flow between the canal and the underground water table?

(a) Absorption

(b) Seepage

(c) Percolation

(d) Both Absorption and Percolation

I have been asked this question during an internship interview.

Question is from Canal Irrigation System topic in portion Canal Irrigation System of Irrigation Engineering

Answer 1

Right option is (c) Percolation

Explanation: When the ground water-table is nearer to the natural surface, the water which has entered the subsoil may join the saturation zone or underground reservoir to maintain a continuous direct flow. Due to the difference of level, the water directly flows from the canal to the underground reservoir through the soil pores.