a. Using the rainfall data provided in Table 1, the two-hour unit hydrograph given in Table 2, a index of 0.5 cm/h, and a baseflow of 20 m'/s: Determine the surface runoff hydrograph from the 4-hour rainfall; Compute the peak streamflow and hour of occurrence; Estimate the volume of stream occurring between the fourth and eight hours. b. Use the two-hour Unit hydrograph to develop the five-hour unit hydrograph. Table 1 Rainfall data Time Interval (h) 0-2 2-4 Rainfall (cm) 3.5 2.5
a. Using the rainfall data provided in Table 1, the two-hour unit hydrograph given in Table 2, a index of 0.5 cm/h, and a baseflow of 20 m'/s: Determine the surface runoff hydrograph from the 4-hour rainfall; Compute the peak streamflow and hour of occurrence; Estimate the volume of stream occurring between the fourth and eight hours. b. Use the two-hour Unit hydrograph to develop the five-hour unit hydrograph. Table 1 Rainfall data Time Interval (h) 0-2 2-4 Rainfall (cm) 3.5 2.5
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![a. Using the rainfall data provided in Table 1, the two-hour unit hydrograph given in Table 2, a
index of 0.5 cm/h, and a baseflow of 20 m/s:
Determine the surface runoff hydrograph from the 4-hour rainfall;
Compute the peak streamflow and hour of occurrence;
I.
Estimate the volume of stream occurring between the fourth and eight hours.
b. Use the two-hour Unit hydrograph to develop the five-hour unit hydrograph.
Table 1 Rainfall data
Time Interval (h)
0=2
2-4
Rainfall (cm)
3.5
2.5
Table 2 Unit hydrograph ordinates
Time (hr)
1
2
4
5
10
UH (m/s)
Activate
GOo Settir
3
11
18
26
24
17
3.
00](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcab917b3-fd22-4025-b1e3-d9d12f48dd8b%2F3d5b1083-1bc4-4bb1-8c11-961f34581213%2Feoifcur_processed.jpeg&w=3840&q=75)
Transcribed Image Text:a. Using the rainfall data provided in Table 1, the two-hour unit hydrograph given in Table 2, a
index of 0.5 cm/h, and a baseflow of 20 m/s:
Determine the surface runoff hydrograph from the 4-hour rainfall;
Compute the peak streamflow and hour of occurrence;
I.
Estimate the volume of stream occurring between the fourth and eight hours.
b. Use the two-hour Unit hydrograph to develop the five-hour unit hydrograph.
Table 1 Rainfall data
Time Interval (h)
0=2
2-4
Rainfall (cm)
3.5
2.5
Table 2 Unit hydrograph ordinates
Time (hr)
1
2
4
5
10
UH (m/s)
Activate
GOo Settir
3
11
18
26
24
17
3.
00
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