Using the flows in the following table, derive the appropriate Unit Hydrograph, given that the catchment area is 172.8km

[answerhappygod]

Using the flows in the following table, derive the appropriate Unit
Hydrograph, given that the catchment area is 172.8km2
and that the flood peak is due to a 2 hour 5mm rainfall storm which
commenced at time zero.
Time
Flow
0
1.62
2
1.49
4
1.86
6
3.51
8
13.05
10
10.97
12
8.58
14
6.86
16
5.58
18
4.78
20
4.02
22
3.25
24
2.98
26
2.68
28
2.31
30
2.08
32
1.94
34
1.86
36
1.84
[22 marks]
b) Derive a 4 hour
Unit Hydrograph.
[6⅓ marks]
[5 marks]