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Slide 2

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Hydrograph
Record of River Discharge over a period of time
Storm Hydrographs
Show the change in discharge caused by a
period of rainfall…read more

Slide 3

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a ph
gr
ro
yd
3
H
d
oo
Discharge (m3/s)
Fl
2
4
1 3
2
0 12 24 36 48 30 72
Hours from start of rain storm…read more

Slide 4

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Discharge (m3/s) 3
2
1
0 12 24 36 48 30 72
Hours from start of rain storm…read more

Slide 5

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Rainfall shown
3 in mm, as a
bar graph
Discharge (m3/s)
2
Peak Rainfall-
mm
4 the time
1 3 period when
2 the most rain
fell.
0 12 24 36 48 30 72
Hours from start of rain storm…read more

Slide 6

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Discharge: the
volume of water in
3 a river at a given
time. (Volume x
Velocity). Measured
Discharge (m3/s)
in cumecs (m3/sec)-
2 Cubic Metres per
mm Second.
4
1 3
2
0 12 24 36 48 30 72
Hours from start of rain storm…read more

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