Example /A 4-hour rain of average intensity 1 cm/hr. falls over the fern leaf type catchments shown in Fig. below. The time of concentration from the lines AA, BB, CC and DD are 1, 2, 3and 4 hours, respectively, to the site 0 where the discharge measurements are made. The value of the runoff coefficient C are 0.5, 0.6, and 0.7 for the 1st, 2nd and 3rd hours of rainfall respectively and attains a constant value of 0.8 after 3 hours. Determine the discharge at site O and draw the discharge hydrograph at O? Basin Isochrones Joundary Catchment area # IV III 50 ha 30 ha 40 ha! 20 ha Discharge site
Example /A 4-hour rain of average intensity 1 cm/hr. falls over the fern leaf type catchments shown in Fig. below. The time of concentration from the lines AA, BB, CC and DD are 1, 2, 3and 4 hours, respectively, to the site 0 where the discharge measurements are made. The value of the runoff coefficient C are 0.5, 0.6, and 0.7 for the 1st, 2nd and 3rd hours of rainfall respectively and attains a constant value of 0.8 after 3 hours. Determine the discharge at site O and draw the discharge hydrograph at O? Basin Isochrones Joundary Catchment area # IV III 50 ha 30 ha 40 ha! 20 ha Discharge site
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Example / A 4-hour rain of average intensity 1 cm/hr. falls over the fern leaf type catchments shown in Fig.
below. The time of concentration from the lines AA, BB, CC and DD are 1, 2, 3and 4 hours, respectively, to
the site 0 where the discharge measurements are made. The value of the runoff coefficient C are 0.5, 0.6, and
0.7 for the 1st, 2nd and 3rd hours of rainfall respectively and attains a constant value of 0.8 after 3 hours.
Determine the discharge at site O and draw the discharge hydrograph at O?
Basin
Isochrones
Joundary
Catchment
área
IV
III
II
50 ha
30 ha
40 ha
20 ha
Discharge
site
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