A flood team examined a river gauge on the River Severn after Storm Henk. Fig. 1 shows the gauge station, nearby floodplain and houses behind an embankment....

Assessment: Geography 9230 | Paper 1 Mock 01 | Written Paper 1 Subject: Geography - 9230

Question 1 Report

9230-p1-hazards-8-severn-river-gauge

A flood team examined a river gauge on the River Severn after Storm Henk. Fig. 1 shows the gauge station, nearby floodplain and houses behind an embankment. Table 1 gives the water level at six-hour intervals. The warning level is 4.0 m and the severe-flood level is 5.0 m.

TimeRiver level (m)
00:002.7
06:003.8
12:004.6
18:005.3

(a) Which reading first exceeded the warning level? [1]
(b) Outline one reason why the floodplain shown in Fig. 1 is at risk. [1]

Answer Details

(a) 12:00 / 4.6 m [1]. (b) Any one: it is low-lying beside the river [1]; floodwater can spill over the channel / embankment [1]; impermeable urban surfaces increase runoff [1]. [1]

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