2.8. Determine the storm hydro-

graph resulting from hourly rainfall

of 1, 2, 3, 2 over a 4-hr period.

Figure P2-8 Oshows the trian-

gular 1 hr UH for this problem.

U (cfs)

1.0

0.5

0

0

1 2

3 4 5

Time (hr)

Figure P2-8

Triangular 1-hr UH.

6/nLong description

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U (cfs)

1.0

0.5

1

2

3 4

Time (hr)

5

6

The triangular graph rises to a maximum

at (2, 1), before falling to y = 0 at (6, 0).