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Question 1 The storage - outflow relationship for a small dam is given in Table 1....

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Civil Engineering

Question 1 The storage - outflow relationshipfor a small dam is given in Table 1. The inflow hydrograph for theuncontrolled spillway of this dam is tabulated in Table 2.Determine:

  1. the outflow hydrograph from the spillway (fill the table andadd more rows if necessary),
  2. attenuation, translation, and lengthening in the base time ofthe outflow hydrograph.
  3. Draw inflow and outflow hydrographs on the same figure and showthe parameters asked in part b on this figure (draw in Excel andpaste it here).
  4. Comment on the location of peak discharge of outflowhydrograph, i.e. why is it coincident with the inflowhydrograph?

Hint: Use Table 1 values to obtain S=f(Q).

Table 1

Q (m³/s)

50

100

150

200

250

2S/Δt(m³/s)

300

450

600

750

900

Table 2

t
(hr)

Inflow
(m³/s)

0

45

2

175

4

370

6

540

8

390

10

280

12

215

14

175

16

135

18

100

20

70

22

45

Answer & Explanation Solved by verified expert
4.3 Ratings (759 Votes)
TABLE 1O m3s2Sdt2SdtO5003000035000100045000550001500600007500020007500095000250090000115000TABLE 2assume    See Answer
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