Fig. 1 shows a village water point on the piedmont of the Suleiman Range. After heavy rain, a seasonal stream spreads out and deposits gravel where it leave...
Question 1 Report
Fig. 1 shows a village water point on the piedmont of the Suleiman Range. After heavy rain, a seasonal stream spreads out and deposits gravel where it leaves the mountains. Households collect water from a hand pump, but some wells fail before the next monsoon. The diagram is being used to plan a small recharge scheme.
(a) Identify the fan-shaped deposit labelled X. [1]
(b) Describe why the stream deposits material at X. [1]
(c) Explain two reasons why groundwater is important in this part of Pakistan. [2]
(d) Explain two methods of increasing groundwater recharge here. [2]
Answer Details
(a) Alluvial fan [1] (b) The stream loses velocity and carrying capacity when it reaches flatter ground, so it deposits sediment [1] (c) Any two: supplies drinking/domestic water [1]; irrigates crops where rivers/canals are absent [1]; supports livestock and settlements in a dry climate [1]; provides water during dry months [1]. [2] (d) Any two: construct check dams to slow water [1]; build recharge ponds/percolation basins [1]; protect stream channels and infiltration areas from sealing/building [1]; direct floodwater into recharge wells [1]. [2]
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