Question

Question 24
It is important to make small check dams across the flooded gullies because they
(i) hold water for irrigation
(ii) hold water and prevent soil erosion
(iii) recharge groundwater
(iv) hold water permanently.

(a) (i) and (iv)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (ii) and (iv)

Answer 1

Option (b) is correct.
Gully plugs, also called check dams, are mainly built to prevent erosion and to settle sediments and pollutants, and to recharge groundwater. Furthermore, it is possible to keep soil moisture due to infiltration.